Margarine or butter

Margarine or butter? If you answered "butter," I've got some information that will make you glad you did. Today Ms. Jenny Thompson from HSI sent me an e-mail that tell me about The different between butter and margarine by L. Eugene Arnold, M.Ed., M.D.; a Professor Emeritus of Psychiatry at Ohio State University. Here's what Dr. Arnold writes:
1. Margarine.
2. Butter.