Vitamin D was originally thought to only be involved with bone health. More recently, research suggests it also plays a part in immune function. This week, we explore the effects of vitamin D on preventing colds and flu.
A number of herbs have been touted as having benefits for immune function. I reviewed research on three of them, seeing if they hold therapeutic potential.
Fatigue and depression are both frequent complaints. Iron deficiency and thyroid function are both common causes, yet often not fully evaluated.