There is a spurt of recent studies that indicate that nutritional supplements may not be needed and may actually do some harm. I do take some supplements such as multivitamin, flax seed oil capsule, garlic tablet. Recently, due to my fractures, upon my orthopedist's recommendation I am taking also Vitamin D and calcium supplements. I was concerned about the harmful effects mentioned in the recent studies and looked up several articles on internet. One thing that caught my eye was that o nly animal foods have vitamin B12 naturally. Vegetarians may not get enough B12 unless they consume milk, food that are fortified with B12 or take supplements. Fortunately, one serving of milk contains about 1.2 mcg of B12. According to NIH, adults require about 2.4 mcg (micrograms) of B12 daily. Breakfast cereals also are fortified with B12. I don't eat cereals and don't regularly drink milk. Vitamin B12 deficiency causes tiredness, constipation, loss of appetite, weight loss, ner...