While calcium is the most well-known bone-building mineral, taking high doses of calcium supplements can make men's risk of prostate cancer skyrocket. (Two servings of dairy per day will fill your calcium need without increasing your risk). Save your bones and your manhood with folate and B-12. A combination of B vitamins are important for bone health and help lower levels of homocysteine, an amino acid that ups your risk of blood clots. A 2005 study published in the Journal of the American Medical Association, reports men who took a daily dose of folate and B-12 were 80 percent less likely to break a bone than those taking placebo.
Conditions: Bone health
Recommendations: 5 mg of folate (or 500 mcg of folic acid) and 1500 mcg of vitamin B-12
Interactions & Side Effects: Phenytoin (You may need more folate, but too much folate may interfere with drug), Aspirin and other anti-inflammatory medicines (You may need more folate), Antacids (Drugs that reduce stomach acid can lower folate levels)
Source: Men's Health