Vit D is becoming one of my favorite vitamins. In fact, if someone asked me if I could recommend just one vitamin to improve health, I'm pretty sure I would tell them to take Vit D. Vit D deficiency has been linked to bone loss, immune system problems and even cancer.
Your skin helps to synthesize Vit D when exposed to ultraviolet radiation. The problem is that many of us are concerned about skin cancer so we use sunscreen which in turn, inhibits the formation of vit D. Those of us living in northern climates have an even greater problem with exposure as we wear heavy clothing and spend a lot of time indoors.
One recent study has linked Vit D deficiency with increased incidence of hypertension (high blood pressure) in females. Researchers used data from the Michigan Bone Health and Metabolism Study that examined women from 1992 and then again in 2007. The study measured blood pressure and vit D levels in premenopausal women aged 24-44 years.
The results showed that women who were deficient in Vit D had a 3 times greater risk of developing hypertension in later years.
One more reason to take Vit D.
If you're not sure how much to take you can ask your doctor to order a blood test to measure your vit D levels.