Vitamin D: Although there is quite a debate ranging on what level defines a vitamin d deficiency and therefore it is hard to say precisely how many people actually have one, the lack of sun exposure for many people and poorer conversion among the elderly seems to be making this the number one deficiency.
Answered 4/1/2016
5.7k views
A doctor has provided 1 answer
A doctor has provided 1 answer
10 doctors weighed in across 5 answers
3 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question