If your diet lacks magnesium, a mineral found in spinach and other dark green, leafy vegetables as well as in halibut, almonds and cashews, you may be at risk for coronary artery disease. Researchers from Northwestern University School of Medicine studied nearly 3,000 people by measuring calcium in their coronary arteries, an indicator for clogged blood vessels. They also studied their lifestyle habits. Fifteen years later, doctors tested the subjects again. Those who consumed the least amount of magnesium had the highest calcium levels. Apparently, Popeye has strong arteries as well as strong muscles. Now if he’d just kick that tobacco habit.