Vitamin D3 is preferred because it absorbs better than D2. And yes, taking too much, like more than 4,000 IU a day, can cause ...

The human body is able to synthesize Vitamin D3 through exposure to UVB rays from sunlight. Vitamin D deficiency can lead to health problems. It’s called the ‘sunshine vitamin’ because it is ...

High-dose vitamin D supplementation reduces disease activity in clinically isolated syndrome typical of MS, results of a ...