Oatmeal isn’t the only heart-friendly breakfast: Enjoying one grapefruit a day can help lower "bad" LDL cholesterol levels by 15.5% and triglycerides by 27%, according to a study in the Journal of Agricultural and Food Chemistry.



Deep red varieties pack the biggest punch because they have higher levels of antioxidants, says Shela Gorinstein, PhD, the lead researcher in the study. Grapefruit does increase the potency of some prescription drugs, so check with your doc before you dig in.