vitamin

Dear Doctor: Will eating nuts really reduce my risk of heart disease, cancer and other diseases, which a new study has suggested? If so, how many should I be eating? Dear Reader: Nuts are fruits. They consist of a hard shell [...]

Dear Doctor: How much sunshine do I need to get my daily dose of vitamin D? And does wearing sunscreen interfere with my body's production of vitamin D? Dear Reader: These are good questions. The major source of our body's vitamin [...]

Dear Doctor: One of my resolutions for the new year was to become a vegan, and now my girlfriend is saying I'll have to take supplements to get enough vitamin B12. Why can't I get B12 in my diet, and what will happen if I fall short?