The estimation of prevalence of lactose intolerance may be too high because of:
surveys in which they included self-diagnosed and not just officially diagnozed lactose intolerance
false positive diagnostic tests (up to 20% according to American Family Physician) due to other problems, such as irritable bowel syndrome, sensitivity to A1 milk protein,...
There is some evidence that boron intake by food or supplements (3-6 mg/day) is associated with less symptoms in osteoarthritis and rheumatoid arthritis.
Foods high in boron include avocado, lentils, red kidney beans, nuts, prunes and raisins (1-2 mg/serving).
It is currently not clear if boron is an essential nutrient, since there is no agreement if ...