According the a recent National Health and Nutrition Examination Survey (NHANES),up to 90% of the population in the USA are Vitamin D deficient.
Can you believe it! I can, because Vitamin D is made in your body when you are exposed to sunlight. However, our life style has made it so that our time in the sun is limited or blocked by sunscreen. Also, when you are like me and live in a place like Wisconsin, sunlight is very limited in the winter months.
Vitamin D deficiency is commonly known to be linked to seasonal depression, but do you know there are multiple other symptoms as well?