Dr. Joseph Mercola - Take Control of Your Health

The label on a supplement bottle tells you what went into the capsule — not what reaches your cells. For a great many products, the gap between those two numbers is enormous, and it is invisible at the point of purchase The scientific term for how much of a compound actually reaches your bloodstream in active form is bioavailability. Most oral supplements lose a large fraction of their dose to sto...

There is no single temperature that automatically makes exercise unsafe because humidity, direct sunlight, and airflow often influence heat stress as much as the temperature itself Your body maintains a core temperature near 98.6 degrees F, but exercise and hot weather together increase heat production, raising the risk of heat-related illness when heat builds up faster than your body can release...

Nearly 1.2 billion people worldwide were living with a mental disorder in 2023, and anxiety and depression accounted for much of the increase, making mental illness one of the leading causes of disability across the globe Teenagers ages 15 to 19 now carry the highest burden of mental disorders, replacing middle-aged adults as the most affected group and raising concerns about long-term effects on...

Chronic kidney disease often develops silently for years, but even early kidney damage sharply increases your risk of heart attack, stroke, heart failure, and dangerous heart rhythm problems Two common tests called eGFR and UACR reveal hidden kidney stress long before symptoms appear and provide an early warning sign that your cardiovascular system is already under strain Researchers discovered th...

Human brain tissue contains far higher concentrations of microplastics than liver or kidney tissue, and researchers found the burden increased sharply between 2016 and 2024 Researchers discovered that patients with microplastics embedded inside carotid artery plaque faced a 4.53-fold higher risk of heart attack, stroke, or death compared to patients without detectable plastics in plaque Studies fo...

In my May 2026 CBS Chicago interview, I explained that your body already contains detox systems that work continuously through your liver, skin, kidneys, and digestive tract, but processed foods, seed oils, and dehydration overload those pathways and slow recovery Regular sun exposure and increased outdoor activity naturally support detoxification by improving sweating, circulation, hydration, and...

Your abdominal muscles physically influence your brain every time you move by creating pressure changes that affect brain fluid circulation, nervous system signaling, and mechanical stimulation inside the skull Research showed that exercises combining movement with coordination and focus, including yoga, tai chi, Pilates, dance and bodyweight training, improved memory, attention, decision-making a...

The amount of time stool stays inside your body strongly influences your gut bacteria, short-chain fatty acid production, inflammation levels, and metabolic health Researchers found that slower gut transit shifts bacteria away from carbohydrate fermentation and toward protein fermentation, increasing irritating compounds like ammonia and hydrogen sulfide inside the colon A simple blue stool test r...

Glioblastoma is considered one of the most aggressive brain cancers, with survival often limited to about a year, largely because tumors adapt by rewiring how they use nutrients and energy Tumors divert vitamin B3 (niacinamide) away from normal energy production into a pathway that supports their survival, suggesting a metabolic weakness that could potentially be targeted This altered pathway may...

Newly declassified government records suggest a U.S. national laboratory considered a laboratory origin for COVID-19 to be just as plausible as a natural origin as early as May 2020, raising new questions about what officials knew during the pandemic's early months The released documents describe federally funded coronavirus research that included spike protein engineering, receptor adaptation exp...

Adults with higher cardiorespiratory fitness had significantly lower risks of dementia, depression, and psychotic disorders, showing that your long-term brain health is strongly tied to how efficiently your body uses oxygen during movement Researchers found that even small improvements in exercise capacity reduced dementia and depression risk, meaning your brain responds to gradual fitness gains l...

The pharmaceutical industry has perfected this model: drugs are designed to be taken perpetually rather than cure, side effects create demand for additional drugs, and the entire regulatory apparatus is structured to suppress affordable natural therapies that challenge it SSRIs epitomize this dynamic — massively overprescribed, frequently life-ruining, and nearly impossible to withdraw from — yet...

Researchers found that every 10% increase in ultraprocessed food intake linked to measurable declines in attention performance, even in adults without dementia Attention problems such as brain fog, distractibility, slower thinking, and mental fatigue often appear long before obvious memory loss and may reflect early metabolic stress in the brain The study found that ultraprocessed foods harmed att...

Chronic immune activation creates a feedback loop between immune cells that keeps them stuck in "on mode," increasing the likelihood of uncontrolled growth and lymphoma development over time Autoimmunity and cancer are opposite outcomes of the same immune system imbalance, meaning pushing your immune system too hard or suppressing it too much both increase disease risk Cancer treatments that boost...

GLP-1 drugs such as Ozempic and Wegovy have been linked to serious vision concerns, including diabetic retinopathy and optic nerve damage that can result in lasting vision loss Research suggests the highest risk of sudden vision loss may occur within the first year of starting these drugs, with symptoms sometimes appearing overnight without pain or warning Case reports document that even healthy a...

Krill oil improved knee pain, stiffness, and physical function in people with osteoarthritis, helping participants move more comfortably during daily activities like walking and climbing stairs Older adults taking krill oil for six months improved grip strength, knee strength, and muscle thickness, which helps protect against falls, weakness, and loss of independence with age Krill oil delivers om...

Taking magnesium 30 to 60 minutes before bed strengthens your body's natural sleep signal and helps you fall asleep faster Magnesium supports calming brain chemicals and melatonin, which helps quiet a "busy mind" and stabilize your sleep cycle Low magnesium levels are common and leave your nervous system stuck in an overstimulated state that disrupts deep sleep Using magnesium at the same time eac...

Fructose acts as a metabolic signal that pushes your body to store fat and lowers cellular energy, which explains why weight gain and fatigue can happen even without obvious overeating Your body converts fructose into fat more easily than other sugars, increasing triglycerides and driving fatty liver, insulin resistance, and long-term metabolic disease Cutting sugar alone isn't enough because your...

Molecular hydrogen improves your body's antioxidant defenses instead of directly lowering oxidative stress, helping you recover without blocking muscle adaptation Molecular hydrogen helps you maintain speed and power during repeated sprints, especially in the final, fatigue-heavy stages where performance normally declines Hydrogen supports your cellular energy systems by improving mitochondrial fu...

Metabolic syndrome now affects about 1 in 4 adults worldwide, with cases rising rapidly across nearly every country and age group, which means your personal risk is higher than it was just a generation ago The condition develops silently through a combination of abdominal fat, high blood sugar, high blood pressure, and abnormal cholesterol, often without clear symptoms until damage is already unde...

Your immune system doesn't simply weaken with age; it reshapes itself in ways that change your risk for infections, cancer, and autoimmune disease, which affects how well your body recovers and stays resilient over time Women develop a more reactive and inflammatory immune system as they age, which strengthens defense against infections but raises the likelihood of autoimmune conditions where the...

People using GLP-1 drugs like Ozempic lose about 7% of their facial fat for every 22 pounds of body weight lost, resulting in a hollow, prematurely aged look Rapid weight loss may drain key nutrients and fatty acids that your body needs to produce collagen and maintain firm, healthy skin "Ozempic face" may indicate an energy imbalance — your cells lose the fuel and structural support they need to...

Plastics are everywhere — from bottles and food wrappers to your phone and your car — because they're cheap and durable. But over time, they break down into microplastics that may harm the environment and have been linked to potential health effects Global plastic production exploded from 2 million tons in 1950 to over 450 million tons by 2018. Without strict limits, it could triple by 2060, worse...

A 12-month clinical trial found that consistent aerobic exercise lowered long-term cortisol levels, showing your body can reduce chronic stress when you train it regularly About 150 minutes per week of moderate-to-vigorous movement was enough to create measurable changes, making stress reduction achievable with a realistic routine Cortisol is not just a stress hormone but a survival tool that stab...

Your body needs about 12 grams of glycine daily just for collagen synthesis, but can only make about 3 grams and gets 2 to 4 grams from a typical diet, leaving a notable 10-gram daily deficit in many adults This deficit isn't a disease. It's an evolutionary constraint built into human biochemistry. Our glycine synthesis pathway has a hard stoichiometric bottleneck that can never be overcome, regar...