It would appear that vitamin D3 supplements are the superior option for maintaining vitamin D levels, but short exposure of the skin to the sun, even on a cloudy day, will also help you keep healthy vitamin D levels.
Vitamin D is important for maintaining health, as it has many roles in the human body. But there is more than one form of vitamin D, and recent research suggests that these forms may have different effects. So what are the different types of vitamin D, and is one really more beneficial than the.