What Exactly Is Vitamin D? Despite its name, vitamin D isn't a vitamin—it's a hormone. Unlike traditional vitamins that we must obtain solely from food, our bodies can produce vitamin D naturally when ...

Previous research has linked a common vitamin to a slowdown in aging — and now a new Harvard study appears to confirm those findings. The study, which was published in The American Journal of Clinical ...

Experts are sounding the alarm after a man recently died from a vitamin D overdose. David Mitchener, 89, passed away in suburban London, England, after taking high levels of the supplement for nine ...

Nestlé Purina PetCare Company is recalling certain prescription dog food after two dogs exhibited signs of vitamin D toxicity, according to federal health officials. According to a notice posted by ...

Melissa Melough receives funding from the National Institutes of Health (NIH). Children whose mothers had higher vitamin D levels during pregnancy scored better on tests of memory, attention and ...