Vitamins and Supplements
Nutrition
Taking magnesium? Experts have an important warning
Millions take magnesium for better sleep and less stress, but experts say many people may be expecting more than the science can deliver.
Vitamins and Supplements
A daily vitamin D supplement may cut your risk of autoimmune disease by over 20%
A five-year trial in 25,871 adults offers the strongest evidence yet.
Vitamins and Supplements
FDA: 25 weight-loss supplements sold as tejocote root contain a toxic plant that can stop your heart
A single seed of the plant is thought to carry the punch of 100 digoxin heart pills.
Vitamins and Supplements
If you take ACE inhibitors for blood pressure, these foods could raise your potassium dangerously
Millions take this drug class, and a few everyday foods can quietly push potassium too high.
Vitamins and Supplements
Your daily multivitamin may be slowing your biological aging by months
A large randomized trial in older adults found a small but real slowing of cellular aging.
Nutrition
Taking magnesium? Experts have an important warning
Millions take magnesium for better sleep and less stress, but experts say many people may be expecting more than the science can deliver.
Vitamins and Supplements
A daily vitamin D supplement may cut your risk of autoimmune disease by over 20%
A five-year trial in 25,871 adults offers the strongest evidence yet.
Vitamins and Supplements
FDA: 25 weight-loss supplements sold as tejocote root contain a toxic plant that can stop your heart
A single seed of the plant is thought to carry the punch of 100 digoxin heart pills.
Vitamins and Supplements
If you take ACE inhibitors for blood pressure, these foods could raise your potassium dangerously
Millions take this drug class, and a few everyday foods can quietly push potassium too high.
Your calcium and vitamin D supplements may not be protecting your bones at all
The largest review to date finds almost no meaningful bone protection for most older adults.
The nutrients your aging eyes need most – and the foods that deliver them
Two carotenoids concentrate in the retina and appear to slow the disease that steals central vision.
4 popular supplements that can strain your liver
Dietary supplements are widely used to support health, but some products have been linked to liver injury. Experts say choosing the right supplement, taking...
Your fish oil supplement may reach your brain but fail to protect your memory
Cerebrospinal fluid samples proved the supplement was getting where it was meant to go. Cognitive tests showed no advantage over placebo.
What omega-3 may do to your brain – and which people benefit most from taking it
A 2025 review of 58 trials finds modest cognitive gains, with clear caveats.
3 in 4 Americans take supplements every day – here is what the evidence actually shows
Big-selling vitamins and fish oil are failing their own clinical trials.