Tuna is among the many types of fish that are hearty sources of vitamin D. In fact, a serving can provide over 5% of your ...

Vitamin D is essential for bone and immune health, but too much can be dangerous. Experts warn that excess supplementation ...

Taking high-dose vitamin E supplements long-term can cause serious side effects like bleeding, stroke, and heart failure. Learn safe dosing and warning signs.

Low levels of vitamin D seem to raise your risk of heart attack but scientists are still figuring out why—and whether ...

Taking too much vitamin D can cause serious side effects. Learn the signs, why you might feel weird after taking it, and when to talk to your healthcare provider.

Vitamin D is vital for immunity, brain health, strong bones, and overall well-being, but taking in too much from supplements ...

Plant-based foods deliver vitamin A through carotenoids, especially beta-carotene. Orange-hued produce such as carrots, ...

Babies aren't born with enough vitamin K, which the body needs for blood to clot. An injection at birth helps prevent severe ...

When humans need more Vitamin B12—a nutrient that makes healthy red blood cells and turns food into energy—we can get it by ...

Vitamin K injections have prevented deadly brain bleeds in infants for more than 60 years. New research shows refusal rates ...

Doctors at The Children’s Hospital of Philadelphia (CHOP) studied the medical records of newborns. In recent years, they ...