So you're taking Vitamin D. Well done, you! This means you've already begun taking preventative steps to protect yourself against joining the other 40% of the U.S. Population that is D-ficient. This is huge given the role Vitamin D plays in bone health and immunity.
The question now is - how much should you take?
How much Vitamin D do I need?
Well, it depends. Age, body weight, and race are all important determiners, as are environmental factors such as latitude, season, and sun exposure.
Overweight individuals likely require higher amounts of Vitamin D. One study found that obese persons should increase their supplementation by two or three times the amount recommended for their age group.
Similarly, due to greater levels of melanin in the skin, people with darker skin tones need more time in the sun to produce the same amount of Vitamin D as their fair-skinned peers. This would