{"id":2110,"date":"2025-08-24T02:55:00","date_gmt":"2025-08-24T09:55:00","guid":{"rendered":"https:\/\/www.ultalabtests.com\/blog\/?p=2110"},"modified":"2025-08-28T12:49:40","modified_gmt":"2025-08-28T19:49:40","slug":"extreme-heat-aging-best-lab-tests-to-stay-ahead","status":"publish","type":"post","link":"https:\/\/www.ultalabtests.com\/blog\/cognitive-health\/brain-health\/extreme-heat-aging-best-lab-tests-to-stay-ahead\/","title":{"rendered":"Extreme Heat &amp; Aging: Best Lab Tests to Stay Ahead"},"content":{"rendered":"\n<p><strong>Heat waves are becoming more frequent and intense.<\/strong>&nbsp;Beyond the immediate risk of&nbsp;<strong>heat exhaustion<\/strong>&nbsp;and&nbsp;<strong>heat stroke<\/strong>, chronic exposure to&nbsp;<strong>extreme heat<\/strong>&nbsp;can&nbsp;<strong>accelerate biological (epigenetic) aging<\/strong>. How? By nudging multiple body systems out of balance\u2014<strong>fluids and electrolytes<\/strong>,&nbsp;<strong>cardiovascular and kidney function<\/strong>,&nbsp;<strong>metabolism<\/strong>,&nbsp;<strong>hormones<\/strong>, and the&nbsp;<strong>immune system<\/strong>. The good news:&nbsp;<strong>targeted lab tests<\/strong>&nbsp;can help you spot early strain,&nbsp;<strong>personalize your prevention plan<\/strong>, and protect long\u2011term vitality.<\/p>\n\n\n\n<p>This article (a follow\u2011up to our earlier overview on&nbsp;<strong>heat and aging<\/strong>) focuses on&nbsp;<strong>practical strategies<\/strong>&nbsp;and the&nbsp;<strong>specific Ulta Lab Tests<\/strong>&nbsp;that reveal what\u2019s happening inside your body\u2014so you can course\u2011correct sooner.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-heat-and-aging-a-dangerous-link\">Heat and Aging: A Dangerous Link<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-what-the-research-shows\">What the Research Shows<\/h3>\n\n\n\n<p>Recent studies link higher&nbsp;<strong>ambient heat<\/strong>&nbsp;to&nbsp;<strong>epigenetic age acceleration<\/strong>\u2014a measure of biological aging based on&nbsp;<strong>DNA methylation<\/strong>&nbsp;(how chemical tags help turn genes on or off).<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A&nbsp;<strong>2025 Science Advances<\/strong>&nbsp;analysis of 3,686 U.S. adults found that living in areas with more frequent&nbsp;<strong>high\u2011heat days<\/strong>&nbsp;was associated with&nbsp;<strong>faster biological aging<\/strong>&nbsp;across multiple epigenetic clocks (e.g., PCPhenoAge, PCGrimAge, DunedinPACE). Depending on exposure windows, the effect ranged from about&nbsp;<strong>1.1 years<\/strong>&nbsp;to&nbsp;<strong>~2.9 years<\/strong>&nbsp;of accelerated biological age equivalents across different clocks and time frames. (<a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC11864172\/\">PMC<\/a>)<\/li>\n\n\n\n<li>Media summaries quoting the authors note that in the hottest neighborhoods,&nbsp;<strong>biological age appeared up to ~14 months older<\/strong>&nbsp;than in cooler regions\u2014even after adjusting for income, lifestyle, and health history.<\/li>\n\n\n\n<li>Earlier work (e.g.,&nbsp;<strong>Environment International<\/strong>&nbsp;and related cohorts) also links&nbsp;<strong>higher air temperatures<\/strong>&nbsp;to&nbsp;<strong>epigenetic age acceleration<\/strong>, reinforcing that temperature can shape aging biology.<\/li>\n<\/ul>\n\n\n\n<p><strong>Why this matters for patients:<\/strong>&nbsp;epigenetic aging correlates with&nbsp;<strong>immune decline<\/strong>,&nbsp;<strong>vascular inflammation<\/strong>, and&nbsp;<strong>higher risk for chronic disease<\/strong>\u2014all areas that lab testing can monitor and manage proactively.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/i0.wp.com\/www.ultalabtests.com\/blog\/wp-content\/uploads\/2025\/08\/How-Extreme-Heat-Accelerates-Aging-and-the-tests-that-can-help-you-stay-ahead-2.jpeg?resize=1024%2C683&#038;quality=100&#038;ssl=1\" alt=\"How Extreme Heat Accelerates Aging - and the tests that can help you stay ahead.\" class=\"wp-image-2241\" srcset=\"https:\/\/i0.wp.com\/www.ultalabtests.com\/blog\/wp-content\/uploads\/2025\/08\/How-Extreme-Heat-Accelerates-Aging-and-the-tests-that-can-help-you-stay-ahead-2.jpeg?resize=1024%2C683&amp;quality=100&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.ultalabtests.com\/blog\/wp-content\/uploads\/2025\/08\/How-Extreme-Heat-Accelerates-Aging-and-the-tests-that-can-help-you-stay-ahead-2.jpeg?resize=300%2C200&amp;quality=100&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.ultalabtests.com\/blog\/wp-content\/uploads\/2025\/08\/How-Extreme-Heat-Accelerates-Aging-and-the-tests-that-can-help-you-stay-ahead-2.jpeg?resize=768%2C512&amp;quality=100&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.ultalabtests.com\/blog\/wp-content\/uploads\/2025\/08\/How-Extreme-Heat-Accelerates-Aging-and-the-tests-that-can-help-you-stay-ahead-2.jpeg?resize=600%2C400&amp;quality=100&amp;ssl=1 600w, https:\/\/i0.wp.com\/www.ultalabtests.com\/blog\/wp-content\/uploads\/2025\/08\/How-Extreme-Heat-Accelerates-Aging-and-the-tests-that-can-help-you-stay-ahead-2.jpeg?w=1536&amp;quality=100&amp;ssl=1 1536w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">How Extreme Heat Accelerates Aging - and the tests that can help you stay ahead.<\/figcaption><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-heat-damages-the-body\">How Heat Damages the Body<\/h2>\n\n\n\n<p>According to clinicians and researcher commentary:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Cardiovascular strain:<\/strong>&nbsp;The heart works harder to move blood to the skin for cooling\u2014raising heart rate and workload.<\/li>\n\n\n\n<li><strong>Cognitive stress:<\/strong>&nbsp;The nervous system may become overstimulated, causing&nbsp;<strong>confusion<\/strong>,&nbsp;<strong>dizziness<\/strong>, or&nbsp;<strong>memory lapses<\/strong>&nbsp;in susceptible individuals. <\/li>\n\n\n\n<li><strong>Kidney overload:<\/strong>&nbsp;Dehydration and heat increase&nbsp;<strong>renal stress<\/strong>, impairing waste filtration and water\u2013electrolyte balance.<\/li>\n\n\n\n<li><strong>Immune inflammation:<\/strong>&nbsp;The body may respond to heat as a physiological threat, escalating&nbsp;<strong>inflammatory signaling<\/strong>&nbsp;similar to infection. <\/li>\n<\/ul>\n\n\n\n<p>\u201cChronic exposure to heat is like driving a car with an&nbsp;<strong>overheated engine<\/strong>\u2014eventually parts start to break down,\u201d notes preventive cardiology commentary summarized in national coverage. <\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Key point:<\/strong>&nbsp;The 2025 Science Advances study suggests heat\u2011linked epigenetic effects can&nbsp;<strong>persist beyond the exposure window<\/strong>, consistent with the concept of&nbsp;<strong>maladaptive epigenetic memory<\/strong>.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-the-science-of-heat-induced-premature-aging\">The Science of Heat\u2011Induced Premature Aging<\/h2>\n\n\n\n<p>The&nbsp;<strong>Science Advances (2025)<\/strong>&nbsp;paper co\u2011authored by Eun Young Choi shows that repeated exposure to&nbsp;<strong>caution+ and extreme\u2011caution heat index days<\/strong>&nbsp;is associated with&nbsp;<strong>epigenetic clock acceleration<\/strong>\u2014and, in longer windows,&nbsp;<strong>5% faster pace\u2011of\u2011aging<\/strong>&nbsp;on DunedinPACE. In plain terms, the body may \u201cremember\u201d heat stress via&nbsp;<strong>DNA methylation<\/strong>&nbsp;changes affecting genes involved in&nbsp;<strong>inflammation<\/strong>,&nbsp;<strong>metabolism<\/strong>,&nbsp;<strong>immune function<\/strong>,&nbsp;<strong>hormonal regulation<\/strong>, and&nbsp;<strong>cell repair<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-who-is-most-at-risk\">Who Is Most at Risk?<\/h2>\n\n\n\n<p>People working outdoors, older adults, those with&nbsp;<strong>cardiovascular<\/strong>,&nbsp;<strong>kidney<\/strong>,&nbsp;<strong>metabolic<\/strong>, or&nbsp;<strong>endocrine<\/strong>&nbsp;conditions, and anyone on&nbsp;<strong>heat\u2011sensitive medications<\/strong>&nbsp;(see below) carry higher risk. Even in historically hot regions,&nbsp;<strong>cardiovascular<\/strong>&nbsp;and&nbsp;<strong>dementia\u2011related<\/strong>&nbsp;events tend to spike during heat waves\u2014adaptations have limits. <\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/i0.wp.com\/www.ultalabtests.com\/blog\/wp-content\/uploads\/2025\/08\/Hydration-in-Extreme-Heat-A-Key-Defense-Against-Accelerated-Aging-2.jpeg?resize=1024%2C683&#038;quality=100&#038;ssl=1\" alt=\"Middle-aged woman outdoors under hot sun pausing to hydrate with a water bottle, symbolizing protection against dehydration, heat stress, and accelerated aging \u2014 Ulta Lab Tests lifestyle health photo\" class=\"wp-image-2242\" srcset=\"https:\/\/i0.wp.com\/www.ultalabtests.com\/blog\/wp-content\/uploads\/2025\/08\/Hydration-in-Extreme-Heat-A-Key-Defense-Against-Accelerated-Aging-2.jpeg?resize=1024%2C683&amp;quality=100&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.ultalabtests.com\/blog\/wp-content\/uploads\/2025\/08\/Hydration-in-Extreme-Heat-A-Key-Defense-Against-Accelerated-Aging-2.jpeg?resize=300%2C200&amp;quality=100&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.ultalabtests.com\/blog\/wp-content\/uploads\/2025\/08\/Hydration-in-Extreme-Heat-A-Key-Defense-Against-Accelerated-Aging-2.jpeg?resize=768%2C512&amp;quality=100&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.ultalabtests.com\/blog\/wp-content\/uploads\/2025\/08\/Hydration-in-Extreme-Heat-A-Key-Defense-Against-Accelerated-Aging-2.jpeg?resize=600%2C400&amp;quality=100&amp;ssl=1 600w, https:\/\/i0.wp.com\/www.ultalabtests.com\/blog\/wp-content\/uploads\/2025\/08\/Hydration-in-Extreme-Heat-A-Key-Defense-Against-Accelerated-Aging-2.jpeg?w=1536&amp;quality=100&amp;ssl=1 1536w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">Hydration protects against heat stress and accelerated aging. Pairing smart hydration habits with lab testing for electrolytes, kidney function, and inflammation helps you stay ahead of summer health risks.<\/figcaption><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-signs-amp-symptoms-that-heat-is-straining-your-system\">Signs &amp; Symptoms that Heat Is Straining Your System <\/h2>\n\n\n\n<p><strong>Hydration &amp; electrolytes<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Thirst, dry mouth, reduced or dark urine, orthostatic dizziness<\/li>\n\n\n\n<li>Muscle cramps, tingling,&nbsp;<strong>palpitations<\/strong>, headaches<\/li>\n<\/ul>\n\n\n\n<p><strong>Kidney stress<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Swelling of hands\/feet, flank discomfort,&nbsp;<strong>foamy urine<\/strong>, fatigue<\/li>\n<\/ul>\n\n\n\n<p><strong>Cardiovascular strain<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fast heart rate, shortness of breath with mild exertion, lightheadedness<\/li>\n<\/ul>\n\n\n\n<p><strong>Inflammation &amp; oxidative stress<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Persistent fatigue\/low energy, achy joints\/muscles, slow recovery after workouts<\/li>\n<\/ul>\n\n\n\n<p><strong>Metabolic changes<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Unusual hunger\/thirst, increased urination,&nbsp;<strong>brain fog<\/strong>&nbsp;after meals<\/li>\n<\/ul>\n\n\n\n<p><strong>Hormone dysregulation<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Heat intolerance, sleep disruption, anxious or \u201cwired\/tired\u201d feeling, exercise intolerance<\/li>\n<\/ul>\n\n\n\n<p>If these build over days to weeks in hot weather\u2014or if you have&nbsp;<strong>diabetes, heart, kidney, or thyroid disease<\/strong>\u2014<strong>lab tests<\/strong>can clarify whether heat is the trigger.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-lab-tests-help-you-manage-heat-related-aging-risks\">How Lab Tests Help You Manage Heat\u2011Related Aging Risks<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Quantify hydration &amp; electrolytes<\/strong>&nbsp;(sodium, potassium, chloride, CO\u2082\/bicarbonate,&nbsp;<strong>serum osmolality<\/strong>,&nbsp;<strong>urine concentration<\/strong>).<\/li>\n\n\n\n<li><strong>Screen kidney &amp; liver strain<\/strong>&nbsp;before symptoms escalate (<strong>BUN<\/strong>,&nbsp;<strong>creatinine\/eGFR<\/strong>,&nbsp;<strong>AST\/ALT<\/strong>).<\/li>\n\n\n\n<li><strong>Detect chronic low\u2011grade inflammation<\/strong>&nbsp;(<strong>hs\u2011CRP<\/strong>).<\/li>\n\n\n\n<li><strong>Identify muscle breakdown<\/strong>&nbsp;early (<strong>creatine kinase<\/strong>\/CK).<\/li>\n\n\n\n<li><strong>Track cardiometabolic risk<\/strong>&nbsp;(lipids,&nbsp;<strong>ApoB<\/strong>,&nbsp;<strong>Lp(a)<\/strong>,&nbsp;<strong>insulin<\/strong>,&nbsp;<strong>A1c<\/strong>).<\/li>\n\n\n\n<li><strong>Assess heat tolerance hormones<\/strong>&nbsp;(thyroid function,&nbsp;<strong>cortisol<\/strong>,&nbsp;<strong>DHEA\u2011S<\/strong>).<\/li>\n\n\n\n<li><strong>Check nutrient reserves<\/strong>&nbsp;(<strong>vitamin D<\/strong>,&nbsp;<strong>iron\/ferritin<\/strong>,&nbsp;<strong>B\u2011vitamins<\/strong>).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-individual-test-breakdowns-what-why-how\">Individual Test Breakdowns (what, why, how)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-hydration-amp-electrolytes\">Hydration &amp; Electrolytes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Comprehensive Metabolic Panel (CMP)<\/strong>\u00a0\u2014 glucose, electrolytes (Na\u207a, K\u207a, Cl\u207b, CO\u2082), kidney and liver markers.<br><em>Why it matters:<\/em>\u00a0Heat raises fluid losses; CMP shows\u00a0<strong>dehydration patterns<\/strong>\u00a0(e.g., rising sodium or\u00a0<strong>BUN\/creatinine<\/strong>), electrolyte shifts, and organ strain.<br><em>How it helps:<\/em>\u00a0Guides rehydration\/electrolyte strategy; establishes a\u00a0<strong>baseline<\/strong>\u00a0before and during heat season.<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/comprehensive-metabolic-panel-test-cmp\">Comprehensive Metabolic Panel (CMP)<\/a><\/li>\n\n\n\n<li><strong>Electrolyte Panel<\/strong>\u00a0\u2014 focused view of sodium, potassium, chloride, bicarbonate.<br><em>Why it matters:<\/em>\u00a0Even\u00a0<strong>mild imbalances<\/strong>\u00a0can cause cramps, fatigue, or arrhythmias in heat.<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/electrolyte-panel-test\">Electrolyte Panel<\/a><\/li>\n\n\n\n<li><strong>Serum Osmolality<\/strong>&nbsp;\u2014 concentration of dissolved particles in blood.<br><em>Why it matters:<\/em>&nbsp;Sensitive&nbsp;<strong>hydration status<\/strong>&nbsp;marker; helps distinguish dehydration from&nbsp;<strong>over\u2011hydration<\/strong>.<br><strong>Order:<\/strong>&nbsp;<a href=\"https:\/\/www.ultalabtests.com\/test\/osmolality-serum\">Osmolality, Serum<\/a><\/li>\n\n\n\n<li><strong>Urinalysis (UA)<\/strong>\u00a0\u2014 specific gravity, ketones, protein, microscopy.<br><em>Why it matters:<\/em>\u00a0Dark, concentrated urine signals under\u2011hydration;\u00a0<strong>protein or blood<\/strong>\u00a0can flag\u00a0<strong>kidney stress<\/strong>.<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/urinalysis-complete-test\">Urinalysis, UA Complete<\/a><\/li>\n\n\n\n<li><strong>CBC (Complete Blood Count)<\/strong>\u00a0\u2014 hemoglobin\/hematocrit, red\/white cells, platelets.<br><em>Why it matters:<\/em>\u00a0<strong>Hemoconcentration<\/strong>\u00a0from dehydration may elevate hematocrit; WBC may rise with stress.<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/complete-blood-count-with-differential-and-platelets-cbc-test\">CBC with Differential and Platelets<\/a><\/li>\n\n\n\n<li><strong>Kidney micro\u2011damage (uACR)<\/strong>&nbsp;\u2014 urine albumin\/creatinine.<br><em>Why it matters:<\/em>&nbsp;Heat + dehydration can stress kidneys;&nbsp;<strong>micro\u2011albumin<\/strong>&nbsp;is an early warning.<br><strong>Order:<\/strong>&nbsp;<a href=\"https:\/\/www.ultalabtests.com\/test\/albumin-random-urine-test-with-creatinine\">Albumin (Microalbumin), Random Urine w\/ Creatinine<\/a><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-inflammation-muscle-damage-amp-recovery\">Inflammation, Muscle Damage &amp; Recovery<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>High\u2011Sensitivity C\u2011Reactive Protein (hs\u2011CRP)<\/strong>\u00a0\u2014 low\u2011grade inflammation.<br><em>Why it matters:<\/em>\u00a0Heat stress and poor sleep can raise\u00a0<strong>vascular inflammation<\/strong>.<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/hs-crp-test\">hs\u2011CRP Test<\/a><\/li>\n\n\n\n<li><strong>Creatine Kinase (CK)<\/strong>\u00a0\u2014 muscle breakdown enzyme.<br><em>Why it matters:<\/em>\u00a0Heat\u2011exertion increases\u00a0<strong>rhabdomyolysis<\/strong>\u00a0risk at extremes.<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/creatine-kinase-total-test\">Creatine Kinase (CK), Total<\/a><\/li>\n\n\n\n<li><strong>Homocysteine<\/strong>\u00a0\u2014 methylation\/oxidative stress marker.<br><em>Why it matters:<\/em>\u00a0Elevated levels suggest\u00a0<strong>endothelial strain<\/strong>\u00a0that heat may amplify.<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/homocysteine-test\">Homocysteine<\/a><\/li>\n\n\n\n<li><strong>Uric Acid<\/strong>\u00a0\u2014 purine metabolism.<br><em>Why it matters:<\/em>\u00a0Shifts with\u00a0<strong>dehydration<\/strong>; high levels can trigger\u00a0<strong>gout<\/strong>\u00a0in hot weather.<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/uric-acid-test\">Uric Acid<\/a><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-cardio-metabolic-health\">Cardio\u2011Metabolic Health<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Lipid Panel<\/strong>\u00a0\u2014 total cholesterol, LDL, HDL, triglycerides; consider ratios.<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/lipid-panel-test\">Lipid Panel<\/a><\/li>\n\n\n\n<li><strong>Advanced lipids<\/strong>\u00a0\u2014\u00a0<strong>ApoB<\/strong>\u00a0and\u00a0<strong>Lp(a)<\/strong>\u00a0for particle\u2011based risk.<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/apolipoprotein-b-test\">Apolipoprotein B<\/a>\u00a0and\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/lipoprotein-a-test\">Lipoprotein (a)<\/a><\/li>\n\n\n\n<li><strong>Hemoglobin A1c (HbA1c)<\/strong>\u00a0\u2014 2\u20133 month glucose average.<br><em>Why it matters:<\/em>\u00a0Heat shifts routines\/sleep \u2192\u00a0<strong>glycemic variability<\/strong>\u00a0(vascular aging driver).<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/hemoglobin-a1c-test\">Hemoglobin A1c<\/a><\/li>\n\n\n\n<li><strong>Fasting Insulin<\/strong>\u00a0\u2014 pair with fasting glucose (e.g., HOMA\u2011IR).<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/insulin-test\">Insulin, Fasting<\/a><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-hormone-axes-that-shape-heat-tolerance\">Hormone Axes That Shape Heat Tolerance<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Thyroid<\/strong>\u00a0\u2014\u00a0<strong>TSH \u00b1 Free T4\/T3<\/strong>; imbalance affects\u00a0<strong>thermoregulation<\/strong>, heart rate, energy.<br><strong>Start with:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/tsh-test\">TSH Test<\/a><br><strong>Broader option:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/thyroid-panel-with-tsh\">Thyroid Panel with TSH<\/a><\/li>\n\n\n\n<li><strong>Adrenal Stress<\/strong>\u00a0\u2014\u00a0<strong>Cortisol<\/strong>\u00a0and\u00a0<strong>DHEA\u2011S<\/strong>.<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/cortisol-total-test\">Cortisol, Total<\/a>\u00a0and\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/dhea-s-test\">DHEA\u2011Sulfate<\/a><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-nutrients-that-support-resilience\">Nutrients That Support Resilience<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Vitamin D (25\u2011OH)<\/strong>\u00a0\u2014 immune, vascular, muscle support.<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/vitamin-d-25-hydroxy-total-test\">Vitamin D, 25\u2011Hydroxy, Total<\/a><\/li>\n\n\n\n<li><strong>Iron Stores (Ferritin \u00b1 Iron\/TIBC)<\/strong>\u00a0\u2014 oxygen delivery &amp; heat tolerance.<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/ferritin-test\">Ferritin<\/a>\u00a0and\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/iron-and-total-iron-binding-capacity-tibc-test\">Iron + TIBC<\/a><\/li>\n\n\n\n<li><strong>B\u2011Vitamin Status (B12\/Folate)<\/strong>\u00a0\u2014 energy metabolism and nerve health.<br><strong>Order:<\/strong>\u00a0<a href=\"https:\/\/www.ultalabtests.com\/test\/vitamin-b12-cobalamin-and-folate-panel-test\">Vitamin B12 &amp; Folate Panel<\/a><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-to-expect-from-your-results\">What to Expect from Your Results<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Hydration\/electrolytes:<\/strong>&nbsp;Patterns like&nbsp;<strong>rising sodium<\/strong>,&nbsp;<strong>serum osmolality<\/strong>,&nbsp;<strong>concentrated urine<\/strong>, or&nbsp;<strong>higher hematocrit<\/strong>&nbsp;suggest dehydration; low sodium may indicate&nbsp;<strong>over\u2011hydration<\/strong>.<\/li>\n\n\n\n<li><strong>Kidneys:<\/strong>&nbsp;Small bumps in&nbsp;<strong>BUN\/creatinine<\/strong>&nbsp;or&nbsp;<strong>urine micro\u2011albumin<\/strong>&nbsp;can signal heat\u2011related strain.<\/li>\n\n\n\n<li><strong>Inflammation (hs\u2011CRP):<\/strong>&nbsp;Persistent elevation supports a focus on&nbsp;<strong>sleep<\/strong>,&nbsp;<strong>cooling<\/strong>,&nbsp;<strong>nutrition<\/strong>, and&nbsp;<strong>activity timing<\/strong>.<\/li>\n\n\n\n<li><strong>CK:<\/strong>&nbsp;Mild rises after intense heat\u2011exercises are common;&nbsp;<strong>very high CK<\/strong>&nbsp;warrants medical evaluation.<\/li>\n\n\n\n<li><strong>Metabolic:<\/strong>&nbsp;Trends in&nbsp;<strong>A1c<\/strong>,&nbsp;<strong>fasting insulin<\/strong>, and&nbsp;<strong>lipids<\/strong>&nbsp;reveal how summer routines affect&nbsp;<strong>glucose stability<\/strong>&nbsp;and&nbsp;<strong>vascular risk<\/strong>.<\/li>\n\n\n\n<li><strong>Hormones\/nutrients:<\/strong>&nbsp;Abnormal&nbsp;<strong>thyroid<\/strong>,&nbsp;<strong>cortisol\/DHEA\u2011S<\/strong>, or&nbsp;<strong>vitamin\/iron<\/strong>&nbsp;status can explain&nbsp;<strong>heat intolerance<\/strong>and&nbsp;<strong>fatigue<\/strong>.<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Preparation tips:<\/strong>&nbsp;Follow fasting instructions where indicated (A1c:&nbsp;<strong>no fasting required<\/strong>; insulin\/lipids:&nbsp;<strong>usually fasting<\/strong>). Avoid strenuous exercise 24\u201348 hours before&nbsp;<strong>CK<\/strong>&nbsp;testing. Draw&nbsp;<strong>morning cortisol<\/strong>&nbsp;unless otherwise directed.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-when-to-talk-to-your-doctor-urgent-vs-routine\">When to Talk to Your Doctor\u2014Urgent vs. Routine<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Urgent now:<\/strong>&nbsp;Confusion, fainting, severe headache, vomiting, very hot\/dry skin, pounding\/irregular heartbeat, chest pain, or&nbsp;<strong>no urine \u22658 hours<\/strong>\u2014seek emergency care.<\/li>\n\n\n\n<li><strong>Prompt follow\u2011up:<\/strong>&nbsp;Persistent palpitations, leg cramps, unusual swelling, dark or&nbsp;<strong>foamy urine<\/strong>, or&nbsp;<strong>CK\/creatinine abnormalities<\/strong>&nbsp;on labs.<\/li>\n\n\n\n<li><strong>Routine:<\/strong>&nbsp;Ongoing fatigue, sleep disruption,&nbsp;<strong>heat intolerance<\/strong>, or reduced endurance\u2014use the tests above to target contributors.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-heat-smart-strategies-to-slow-biological-aging-labs-guide-each-step\">Heat\u2011Smart Strategies to Slow Biological Aging (labs guide each step)<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Personalized hydration<\/strong><br>Baseline with\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/comprehensive-metabolic-panel-test-cmp\">CMP<\/a><\/strong>\/<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/electrolyte-panel\">Electrolytes<\/a><\/strong>\u00a0and\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/osmolality-serum\">Serum Osmolality<\/a><\/strong>; use\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/urinalysis-complete-test\">Urinalysis<\/a><\/strong>\u00a0for day\u2011to\u2011day cues. Add electrolytes during prolonged outdoor activity.<\/li>\n\n\n\n<li><strong>Protect kidneys<\/strong><br>Avoid long gaps without fluids; schedule cooling breaks. Recheck\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/comprehensive-metabolic-panel-test-cmp\">CMP<\/a><\/strong>\u00a0and\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/albumin-random-urine-test-with-creatinine\">uACR<\/a><\/strong>\u00a0during heat waves if high risk (CKD, diabetes, hypertension).<\/li>\n\n\n\n<li><strong>Manage inflammation &amp; recovery<\/strong><br>Track\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/hs-crp-test\">hs\u2011CRP<\/a><\/strong>\u00a0and\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/creatine-kinase-total-test\">CK<\/a><\/strong>; build heat acclimation slowly, add cool\u2011downs, protect sleep.<\/li>\n\n\n\n<li><strong>Stabilize metabolic health<\/strong><br>Use\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/hemoglobin-a1c-test\">A1c<\/a><\/strong>\u00a0and\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/insulin-test\">fasting insulin<\/a><\/strong>\u00a0to adjust meal timing, carbs, and activity; optimize\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/lipid-panel-test\">lipids<\/a><\/strong>\/<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/apolipoprotein-b-test\">ApoB<\/a><\/strong>\/<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/lipoprotein-a-test\">Lp(a)<\/a><\/strong>.<\/li>\n\n\n\n<li><strong>Support hormones &amp; nutrients<\/strong><br>Address\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/tsh\">thyroid<\/a><\/strong>\/<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/thyroid-panel-with-tsh\">thyroid panel<\/a><\/strong>, review\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/cortisol-total-test\">cortisol<\/a><\/strong>\/<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/dhea-s-test\">DHEA\u2011S<\/a><\/strong>, and correct\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/vitamin-d-25-hydroxy-total-test\">vitamin D<\/a><\/strong>,\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/ferritin-test\">iron\/ferritin<\/a><\/strong>\/<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/iron-and-total-iron-binding-capacity-tibc-test\">TIBC<\/a><\/strong>,\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/vitamin-b12-cobalamin-and-folate-panel-test\">B12\/folate<\/a><\/strong> gaps.<\/li>\n<\/ol>\n\n\n\n<p><strong>Helpful bundles:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>One\u2011stop baseline:&nbsp;<a href=\"https:\/\/www.ultalabtests.com\/test\/chemistry-panel-and-complete-blood-count-test\">Chemistry Panel + CBC<\/a><\/li>\n\n\n\n<li>Heart &amp; inflammation combo:&nbsp;<a href=\"https:\/\/www.ultalabtests.com\/test\/lipid-panel-and-c-reactive-protein-cardiac-hscrp\">Lipid Panel + hs\u2011CRP<\/a><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-medications-that-can-compound-heat-stress\">Medications That Can Compound Heat Stress <\/h2>\n\n\n\n<p>Certain medications increase vulnerability to&nbsp;<strong>heat\u2011related illness<\/strong>&nbsp;by reducing sweating, blunting thirst, altering blood pressure, or promoting dehydration and electrolyte loss. Examples include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Diuretics<\/strong><\/li>\n\n\n\n<li><strong>Beta\u2011blockers<\/strong><\/li>\n\n\n\n<li><strong>ACE inhibitors\/ARBs (and ARNIs)<\/strong><\/li>\n\n\n\n<li><strong>Anticholinergics<\/strong>&nbsp;(e.g., some antihistamines)<\/li>\n\n\n\n<li><strong>Antipsychotics\/antidepressants<\/strong><\/li>\n\n\n\n<li><strong>Stimulants<\/strong><\/li>\n<\/ul>\n\n\n\n<p><strong>Never stop a medication without medical advice.<\/strong>&nbsp;Instead, take extra precautions in hot weather and use labs to monitor your response. (Authoritative guidance for clinicians is available from&nbsp;<strong>CDC Heat &amp; Medications<\/strong>.) (<a href=\"https:\/\/www.cdc.gov\/heat-health\/hcp\/clinical-guidance\/heat-and-medications-guidance-for-clinicians.html?utm_source=chatgpt.com\">CDC<\/a>)<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faq\">FAQ<\/h2>\n\n\n\n<p><strong>Q1. Can heat alone raise inflammation markers like hs\u2011CRP?<\/strong><br>Yes\u2014thermal stress, dehydration, and poor sleep can nudge\u00a0<strong>low\u2011grade inflammation<\/strong>\u00a0higher. Tracking\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/hs-crp-test\">hs\u2011CRP<\/a><\/strong>\u00a0shows whether your cooling, hydration, and recovery plan is working.<\/p>\n\n\n\n<p><strong>Q2. What\u2019s the simplest lab check for hydration?<\/strong><br>A\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/comprehensive-metabolic-panel-test-cmp\">CMP<\/a><\/strong>\/<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/electrolyte-panel-test\">Electrolyte Panel<\/a><\/strong>\u00a0plus\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/osmolality-serum\">Serum Osmolality<\/a><\/strong>\u00a0and\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/urinalysis-complete-test\">Urinalysis<\/a><\/strong>\u00a0provides a clear view of hydration and kidney response to heat.<\/p>\n\n\n\n<p><strong>Q3. I work out outdoors\u2014how do I know if muscle breakdown is a concern?<\/strong><br>If you\u2019re unusually sore\/weak or have\u00a0<strong>dark urine<\/strong>\u00a0after training in heat, check\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/creatine-kinase-total-test\">CK<\/a><\/strong>\u00a0and a\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/urinalysis-complete-test\">urinalysis<\/a><\/strong>. Very high CK or persistent symptoms need medical attention.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion-next-steps\">Conclusion \/ Next Steps <\/h2>\n\n\n\n<p><strong>Extreme heat accelerates aging<\/strong>\u00a0by stressing hydration, kidneys, metabolism, hormones, and inflammation.\u00a0<strong>Objective data<\/strong>\u00a0makes your plan smarter. Start with hydration and organ\u2011health basics (<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/comprehensive-metabolic-panel-test-cmp\">CMP<\/a><\/strong>\/<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/electrolyte-panel\">Electrolytes<\/a><\/strong>,\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/osmolality-serum\">Osmolality<\/a><\/strong>,\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/urinalysis-ua-complete\">UA<\/a><\/strong>), then layer in\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/hs-crp-test\">hs\u2011CRP<\/a><\/strong>,\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/creatine-kinase-total-test\">CK<\/a><\/strong>,\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/hemoglobin-a1c-test\">A1c<\/a><\/strong>\/<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/insulin-test\">Insulin<\/a><\/strong>\/<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/lipid-panel-test\">Lipids\/ApoB\/Lp(a)<\/a><\/strong>\/<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/apolipoprotein-b-teste\">apolipoprotein-b<\/a><\/strong>\/<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/lipoprotein-a-test\">lipoprotein-a<\/a><\/strong>,\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/tsh\">thyroid<\/a><\/strong>\/<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/cortisol-total-test\">cortisol<\/a><\/strong>\/<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/dhea-sulfate-test\">DHEA\u2011S<\/a><\/strong>, and key nutrients (<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/vitamin-d-25-hydroxy-total-test\">vitamin D<\/a><\/strong>,\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/ferritin-test\">ferritin\/iron<\/a><\/strong>\/<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/iron-and-total-iron-binding-capacity-tibc-test\">TIBC<\/a><\/strong>,\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/vitamin-b12-and-folate-panel-test\">B12\/folate<\/a><\/strong>).<\/p>\n\n\n\n<p><strong>Ready to act?<\/strong>\u00a0Order your baseline today:\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/comprehensive-metabolic-panel-test-cmp\">Comprehensive Metabolic Panel (CMP)<\/a><\/strong>\u00a0and\u00a0<strong><a href=\"https:\/\/www.ultalabtests.com\/test\/urinalysis-complete-test\">Urinalysis Complete<\/a><\/strong>\u2014then re\u2011test during peak heat or after adjusting hydration, training, sleep, and diet.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Heat waves are becoming more frequent and intense.&nbsp;Beyond the immediate risk of&nbsp;heat exhaustion&nbsp;and&nbsp;heat stroke, chronic exposure to&nbsp;extreme heat&nbsp;can&nbsp;accelerate biological (epigenetic) aging. How? By nudging multiple body systems out of balance\u2014fluids and electrolytes,&nbsp;cardiovascular and kidney function,&nbsp;metabolism,&nbsp;hormones, [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":2243,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"om_disable_all_campaigns":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[79,77,116,120,126,275,140,6,151,156,177,173,194,196,204,233,210,237,211,212,260,297,203],"tags":[1733,443,1734,1681,1735,1690,1072,1197,1736],"class_list":["post-2110","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-brain-health","category-cognitive-health","category-exposure","category-all-exposure","category-general-health","category-general-wellness","category-genetic-disorders","category-heart-and-cardiovascular","category-heart-health","category-hormone","category-immunity","category-immunity-and-titer","category-inflammation","category-all-inflammation","category-kidney","category-kidney-health","category-mens-health","category-metabolism-nutrition","category-nutrition","category-stress-and-fatigue","category-all-stress-and-fatigue","category-wellness","category-womens-health","tag-anti-aging-lab-tests","tag-cardiovascular-health","tag-heat-and-aging","tag-hormone-testing","tag-hydration-electrolytes","tag-inflammation-testing","tag-kidney-health","tag-metabolic-health","tag-nutritional-testing"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.3 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Extreme Heat &amp; Aging: Best Lab Tests to Stay Ahead | Ulta Lab Tests<\/title>\n<meta name=\"description\" content=\"See how extreme heat accelerates aging\u2014and the lab tests that detect dehydration, inflammation, and hormone stress early.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ultalabtests.com\/blog\/cognitive-health\/brain-health\/extreme-heat-aging-best-lab-tests-to-stay-ahead\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Extreme Heat &amp; Aging: Best Lab Tests to Stay Ahead\" \/>\n<meta property=\"og:description\" content=\"See how extreme heat accelerates aging\u2014and the lab tests that detect dehydration, inflammation, and hormone stress early.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ultalabtests.com\/blog\/cognitive-health\/brain-health\/extreme-heat-aging-best-lab-tests-to-stay-ahead\/\" \/>\n<meta property=\"og:site_name\" content=\"Ulta Lab Tests\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/facebook.com\/ultalabtests\" \/>\n<meta property=\"article:published_time\" content=\"2025-08-24T09:55:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-28T19:49:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ultalabtests.com\/blog\/wp-content\/uploads\/2025\/08\/Hydration-Under-the-Sun-and-Protecting-Against-Heat-Stress-and-Aging.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"1024\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"John R\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"John R\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 minutes\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Extreme Heat &amp; 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