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    <title>Vitae Health — Research Articles</title>
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    <description>Peer-reviewed biology, explained. Root-cause health education backed by RCTs, meta-analyses, and systematic reviews.</description>
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    <lastBuildDate>Sun, 05 Apr 2026 13:45:20 GMT</lastBuildDate>
    
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      <title><![CDATA[Sleep Debt Is Real — And a Weekend of Extra Sleep Doesn't Fix It]]></title>
      <link>https://www.vitaehealthco.com/blog/sleep-debt-is-real-and-you-cant-fully-recover-it</link>
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      <description><![CDATA[Sleeping 5–6 hours on weekdays and trying to catch up on weekends is one of the most common sleep patterns in the developed world. Research shows that the cognitive deficits from chronic short sleep accumulate and persist beyond what recovery sleep can fully restore — and that the metabolic damage from the cycle itself may be worse than either consistent short sleep or consistent adequate sleep.]]></description>
      <pubDate>Thu, 30 Jul 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[You Have Lead, Mercury, Arsenic, and Cadmium in Your Body Right Now — Here's What They Do]]></title>
      <link>https://www.vitaehealthco.com/blog/your-body-is-full-of-heavy-metals</link>
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      <description><![CDATA[Heavy metals accumulate in the body over a lifetime through food, water, air, and consumer products. At levels well below acute toxicity thresholds, they impair mitochondrial function, disrupt endocrine signaling, damage DNA repair mechanisms, and contribute to cardiovascular and neurological disease. Most people have never been tested.]]></description>
      <pubDate>Thu, 30 Jul 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[One Night of Bad Sleep Reduces Your Natural Killer Cells by Up to 70%]]></title>
      <link>https://www.vitaehealthco.com/blog/one-night-of-bad-sleep-impairs-your-immune-system</link>
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      <description><![CDATA[Natural killer cells are the immune system's first-line defenders against virally infected and cancerous cells. A single night of short sleep — four hours instead of eight — can reduce their activity by up to 70%. This is not a cumulative effect. It happens after one night. And it reverses within one normal night of recovery sleep.]]></description>
      <pubDate>Thu, 23 Jul 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[The Sunscreen and Vitamin D Tradeoff Nobody Talks About Honestly]]></title>
      <link>https://www.vitaehealthco.com/blog/the-sunscreen-vitamin-d-tradeoff</link>
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      <description><![CDATA[Sunscreen prevents UV-induced skin damage and reduces skin cancer risk — that evidence is solid. Sunscreen also blocks the UV-B radiation required for vitamin D synthesis in the skin. These are both true, and the tension between them is rarely addressed honestly. Here is what the research actually shows about skin protection, vitamin D, and how to think about sun exposure.]]></description>
      <pubDate>Thu, 23 Jul 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[Some Researchers Are Calling Alzheimer's 'Type 3 Diabetes' — Here's the Evidence]]></title>
      <link>https://www.vitaehealthco.com/blog/insulin-resistance-and-alzheimers</link>
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      <description><![CDATA[Insulin resistance — the reduced ability of cells to respond to insulin — is well known as the driver of type 2 diabetes. A growing body of research suggests it also plays a direct role in Alzheimer's disease, through mechanisms involving impaired insulin signaling in the brain, accelerated amyloid accumulation, and tau pathology. The 'type 3 diabetes' framing is controversial but grounded in specific biology.]]></description>
      <pubDate>Thu, 16 Jul 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[PFAS Are in the Blood of 97% of Americans — Here's What the Research Actually Says]]></title>
      <link>https://www.vitaehealthco.com/blog/pfas-forever-chemicals-in-your-body</link>
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      <description><![CDATA[Per- and polyfluoroalkyl substances (PFAS) are a class of synthetic chemicals used in non-stick cookware, food packaging, water-resistant clothing, and firefighting foam. They do not break down in the environment or the body — earning the name 'forever chemicals.' They are now detectable in the blood of virtually every American tested, and the health associations being documented are serious.]]></description>
      <pubDate>Thu, 09 Jul 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[Chronic Pain Is Not Just Damage — It's a Change in How Your Brain Processes Signals]]></title>
      <link>https://www.vitaehealthco.com/blog/central-sensitization-how-chronic-pain-changes-your-brain</link>
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      <description><![CDATA[Acute pain is a protective signal — damage in the body triggers a warning to the brain. Chronic pain is something different: a state in which the nervous system itself has been altered, amplifying signals that should have quieted after healing. Understanding the neuroscience of central sensitization reframes what chronic pain is and why treating it requires more than treating tissue.]]></description>
      <pubDate>Thu, 02 Jul 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[A High-Fiber Diet Is Good for Your Gut — Fermented Foods May Be Better]]></title>
      <link>https://www.vitaehealthco.com/blog/fermented-foods-and-gut-diversity</link>
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      <description><![CDATA[A 2021 randomized controlled trial from Stanford directly compared high-fiber and high-fermented-food diets for their effects on gut microbiome diversity and immune function. The results were surprising: fermented foods outperformed fiber for increasing microbiome diversity and reducing inflammatory markers — findings that challenge common assumptions about gut health optimization.]]></description>
      <pubDate>Thu, 25 Jun 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[Chronic Stress Ages You at the Cellular Level — Here's the Mechanism]]></title>
      <link>https://www.vitaehealthco.com/blog/stress-shortens-your-telomeres</link>
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      <description><![CDATA[Telomeres are the protective caps on the ends of your chromosomes, and they shorten with each cell division. Chronic psychological stress has been associated with accelerated telomere shortening in humans — a measurable form of biological aging. This work, which contributed to a Nobel Prize in 2009, changed how scientists understand the relationship between stress and cellular aging.]]></description>
      <pubDate>Thu, 18 Jun 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[Why Diets Fail: Your Metabolism Adapts to Calorie Restriction in Ways That Last for Years]]></title>
      <link>https://www.vitaehealthco.com/blog/why-diets-fail-metabolic-adaptation</link>
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      <description><![CDATA[Calorie restriction causes weight loss — but it also triggers a set of metabolic adaptations that actively resist further loss and promote regain. These adaptations — reduced resting metabolic rate, altered hunger hormones, increased caloric efficiency — have been documented in humans and persist for years after the diet ends. This is the biology of why weight loss is harder than calories in, calories out.]]></description>
      <pubDate>Thu, 11 Jun 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[Ultra-Processed Food Is Engineered to Override Your Body's Satiety Signals]]></title>
      <link>https://www.vitaehealthco.com/blog/how-ultra-processed-food-overrides-your-biology</link>
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      <description><![CDATA[Your body has precise biological mechanisms for detecting when you've eaten enough — hormones, stretch receptors, nutrient sensors. Ultra-processed food is specifically engineered to bypass all of them. This is not an accident, and understanding the mechanism changes how you think about overeating.]]></description>
      <pubDate>Thu, 04 Jun 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[Your Body Has a Second Circulatory System — And Most People Have Never Heard of It]]></title>
      <link>https://www.vitaehealthco.com/blog/your-lymphatic-system-the-forgotten-drainage-network</link>
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      <description><![CDATA[The lymphatic system is a vast network of vessels, nodes, and organs that runs parallel to your cardiovascular system. It drains waste from every tissue, trains your immune system, and absorbs dietary fat from the gut. Unlike blood, it has no pump — and understanding how to keep it moving changes how you think about swelling, immunity, and cellular health.]]></description>
      <pubDate>Thu, 28 May 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[Your Genes Are Not Your Destiny — Your Lifestyle Writes on Them Every Day]]></title>
      <link>https://www.vitaehealthco.com/blog/your-lifestyle-changes-your-gene-expression</link>
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      <description><![CDATA[Epigenetics is the science of how your environment and behavior change which genes are turned on and off — without changing the DNA sequence itself. Exercise, diet, stress, and sleep don't just affect how you feel. They change how your genome is read, in ways that can persist for years and be passed to the next generation.]]></description>
      <pubDate>Thu, 21 May 2026 00:00:00 GMT</pubDate>
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    <item>
      <title><![CDATA[Leptin Resistance: Why Your Brain Stops Hearing the Signal to Stop Eating]]></title>
      <link>https://www.vitaehealthco.com/blog/leptin-resistance-why-your-hunger-signals-break</link>
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      <description><![CDATA[Leptin is the hormone that tells your brain you have enough stored energy and to reduce appetite. In many people with obesity, leptin levels are extremely high — but the brain has stopped responding to it. This is leptin resistance, and it explains why hunger persists even when the body has more than enough fuel.]]></description>
      <pubDate>Thu, 14 May 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[A Single Course of Antibiotics Can Alter Your Gut Microbiome for Over a Year]]></title>
      <link>https://www.vitaehealthco.com/blog/antibiotics-and-your-gut-microbiome</link>
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      <description><![CDATA[Antibiotics are among the most important medicines ever developed. They also cause collateral damage to the gut microbiome that extends far beyond the infection being treated — disrupting microbial diversity, selecting for resistant strains, and leaving lasting changes that in some cases persist for 12 months or longer.]]></description>
      <pubDate>Thu, 07 May 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[You Don't Get Sick in Winter Because of the Cold — Here's What Actually Happens]]></title>
      <link>https://www.vitaehealthco.com/blog/why-you-get-sick-in-winter</link>
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      <description><![CDATA[The idea that cold weather causes illness is one of the most persistent myths in popular health. The real reasons winter is cold and flu season involve indoor crowding, dry air, vitamin D deficiency, and viral biology — none of which have anything to do with being cold.]]></description>
      <pubDate>Thu, 30 Apr 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[The Food You Eat Has Fewer Nutrients Than the Same Food Did 50 Years Ago]]></title>
      <link>https://www.vitaehealthco.com/blog/food-is-less-nutritious-than-it-used-to-be</link>
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      <description><![CDATA[A serving of broccoli today contains measurably less vitamin C, calcium, and iron than the same serving did in 1950. Not because of how you cook it — but because of how it was grown. Soil depletion, industrial agriculture, and selective breeding for yield have quietly reduced the nutritional density of the food supply.]]></description>
      <pubDate>Thu, 23 Apr 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[Your Immune System Has a Memory — And You Can Spend a Lifetime Training It]]></title>
      <link>https://www.vitaehealthco.com/blog/your-immune-system-has-a-memory</link>
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      <description><![CDATA[Every infection you survive and every vaccine you receive leaves a permanent imprint in your immune system — a population of long-lived memory cells that recognize the same threat decades later. How strong that memory is, how long it lasts, and how quickly it responds depends on biology most people have never heard of.]]></description>
      <pubDate>Thu, 16 Apr 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[Your Circadian Rhythm Isn't One Clock — Every Cell in Your Body Has Its Own]]></title>
      <link>https://www.vitaehealthco.com/blog/every-cell-in-your-body-has-its-own-clock</link>
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      <description><![CDATA[Most people think the circadian rhythm is a single brain clock that controls when you feel tired. The reality is more complex: every cell in your body contains its own molecular timepiece, and your liver, pancreas, muscles, and immune system each run on independent schedules. Modern life is desynchronizing them — with consequences far beyond sleep.]]></description>
      <pubDate>Thu, 09 Apr 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[Chronic Stress Doesn't Just Exhaust You — It Physically Shrinks Your Brain]]></title>
      <link>https://www.vitaehealthco.com/blog/chronic-stress-shrinks-your-brain</link>
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      <description><![CDATA[Decades of neuroscience research have established that sustained psychological stress doesn't just make you feel worse — it causes measurable structural changes in the brain, particularly in the hippocampus, the region central to memory and learning. This is not a metaphor. The brain physically changes under chronic stress.]]></description>
      <pubDate>Thu, 02 Apr 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[Alcohol Helps You Fall Asleep — While Quietly Destroying the Sleep That Actually Restores You]]></title>
      <link>https://www.vitaehealthco.com/blog/alcohol-disrupts-sleep-architecture</link>
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      <description><![CDATA[Alcohol is the most widely used sleep aid in the world. It also suppresses the stage of sleep most responsible for emotional processing, memory consolidation, and brain restoration. The sedation it produces is real. The sleep it produces is not.]]></description>
      <pubDate>Sun, 29 Mar 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[The Light in Your Home After Sunset Is Doing Something Your Ancestors Never Experienced]]></title>
      <link>https://www.vitaehealthco.com/blog/artificial-light-at-night-melatonin</link>
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      <description><![CDATA[For the first time in human evolutionary history, we are exposing our biology to bright artificial light after dark. The immediate consequence is melatonin suppression. The downstream consequence is a circadian clock that is chronically delayed and never fully synchronized. The mechanism is specific, the effects are measurable, and the biology evolved for a world without light switches.]]></description>
      <pubDate>Sun, 29 Mar 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[Cancer, Heart Disease, Alzheimer's, Diabetes — They Look Different But They All Share a Silent Driver]]></title>
      <link>https://www.vitaehealthco.com/blog/chronic-inflammation-root-cause</link>
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      <description><![CDATA[Chronic low-grade inflammation is present in the tissue pathology of virtually every major chronic disease of modern life. It is not the only cause of any of them — but understanding why the same inflammatory pathway underlies conditions that appear entirely unrelated changes how you think about what health actually is and what threatens it.]]></description>
      <pubDate>Sun, 29 Mar 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[Your Body Has a Fat That Burns Calories to Keep You Warm — Most People Don't Know It Exists]]></title>
      <link>https://www.vitaehealthco.com/blog/cold-exposure-brown-fat</link>
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      <description><![CDATA[Brown adipose tissue is a metabolically active fat that generates heat by burning fuel — and for most of the 20th century, scientists believed adults didn't have it. They were wrong. Cold exposure activates it. Understanding how brown fat works changes how you think about cold, metabolism, and the biology of staying warm.]]></description>
      <pubDate>Sun, 29 Mar 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[70% of Your Immune System Lives in Your Gut — And Your Microbiome Is Actively Training It]]></title>
      <link>https://www.vitaehealthco.com/blog/gut-microbiome-immune-system</link>
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      <description><![CDATA[The largest collection of immune tissue in the human body is in the gastrointestinal tract. The microbiome that lives there is not a passive passenger — it is in continuous, active dialogue with your immune system, training it to distinguish friend from foe, calibrating its responses, and producing the molecules that regulate immune tolerance and inflammatory balance throughout the body.]]></description>
      <pubDate>Sun, 29 Mar 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[Most People Are Deficient in Magnesium — And It's Quietly Wrecking Their Sleep]]></title>
      <link>https://www.vitaehealthco.com/blog/magnesium-and-sleep</link>
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      <description><![CDATA[Magnesium is involved in over 300 enzymatic reactions in the body — including the ones that govern how well your nervous system quiets down at night. Most people don't get enough of it. The connection between magnesium deficiency and poor sleep is more direct than most people realize, running through GABA receptors and NMDA receptor regulation at the level of individual neurons.]]></description>
      <pubDate>Sun, 29 Mar 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[The Way You Breathe — Not Just Whether You Breathe — Has Been Quietly Shaping Your Health]]></title>
      <link>https://www.vitaehealthco.com/blog/mouth-breathing-biology</link>
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      <description><![CDATA[Nasal breathing and mouth breathing are not equivalent. The nose filters, humidifies, and warms air — but beyond those mechanical functions, nasal breathing produces nitric oxide, a molecule with vasodilatory, antimicrobial, and oxygen-delivery effects that mouth breathing completely bypasses. The biology of breathing route is more consequential than almost anyone learns.]]></description>
      <pubDate>Sun, 29 Mar 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[After 40, Your Muscles Become Significantly Harder to Maintain — And the Mechanism Is Not What Most People Think]]></title>
      <link>https://www.vitaehealthco.com/blog/protein-muscle-after-40</link>
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      <description><![CDATA[The muscle loss that accelerates after 40 is not simply about eating less or moving less. It is driven by a specific biological shift called anabolic resistance — a reduced responsiveness of muscle tissue to the signals that normally trigger protein synthesis. Understanding this mechanism changes what optimal nutrition and training looks like in midlife and beyond.]]></description>
      <pubDate>Sun, 29 Mar 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[The Problem Isn't That You Don't Exercise Enough — It's What Happens to Your Metabolism Between Movements]]></title>
      <link>https://www.vitaehealthco.com/blog/sitting-metabolic-disruption</link>
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      <description><![CDATA[An hour of daily exercise does not undo eight hours of sitting. The metabolic consequences of prolonged inactivity operate through a specific enzyme — lipoprotein lipase — that has almost nothing to do with whether you exercise. Sedentary behavior and physical inactivity are distinct biological states, and conflating them has led to a fundamental misunderstanding of how sitting affects metabolic health.]]></description>
      <pubDate>Sun, 29 Mar 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[It's Not Just What You Eat — When You Eat Sends Timing Signals to Every Organ in Your Body]]></title>
      <link>https://www.vitaehealthco.com/blog/time-restricted-eating-circadian-biology</link>
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      <description><![CDATA[Your liver, gut, and fat tissue each have their own internal clocks — and they are set not by light, but by when food arrives. Time-restricted eating is not primarily a calorie strategy. It is a circadian intervention. The biology of why meal timing matters is more fundamental than any macronutrient discussion.]]></description>
      <pubDate>Sun, 29 Mar 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[The Nerve That Controls Your Stress Response, Gut, and Immune System]]></title>
      <link>https://www.vitaehealthco.com/blog/the-vagus-nerve-controls-your-stress-gut-and-immunity</link>
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      <description><![CDATA[The vagus nerve is the longest cranial nerve in the body. It runs a two-way communication line between your brain and nearly every major organ — and its tone determines how quickly you recover from stress, how well your gut functions, and how effectively your immune system controls inflammation.]]></description>
      <pubDate>Thu, 26 Mar 2026 00:00:00 GMT</pubDate>
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      <title><![CDATA[Your Brain Clears Toxic Waste Every Night — But Only During Deep Sleep]]></title>
      <link>https://www.vitaehealthco.com/blog/your-brain-washes-itself-during-sleep</link>
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      <description><![CDATA[Every night during deep sleep, your brain activates a hidden plumbing system that flushes out the toxic proteins linked to Alzheimer's disease. It only runs when you're unconscious. The biology of why poor sleep is a dementia risk factor is now understood — and it's more literal than most people realize.]]></description>
      <pubDate>Thu, 19 Mar 2026 00:00:00 GMT</pubDate>
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