Vitamin D also helps clear beta amyloid, a protein that plays a role in Alzheimer’s disease, Merrill points out. This is “the ...

Mega-doses should instead be reserved for cases of severe deficiency, and must be prescribed by a doctor. Vitamin D is involved in bone metabolism, notably by increasing intestinal absorption of ...

Be Consistent Smaller, regular vitamin D doses (800–2000 IU daily) are more effective than occasional mega-doses unless prescribed for severe deficiency. Take Supplements with Food Vitamin D is ...