31. Grapefruit

Grapefruit contains Vitamin C, fiber, potassium, lycopene and folate.

Grapefruit contains numerous nutrients that contribute to keeping the cardiovascular system healthy. Its rich source of vitamin C protects the arteries, pectin fibre and quercetin lowers blood cholesterol, potassium lowers high blood pressure, and folate keeps homocysteine levels healthy.  Grapefruit is one of the best sources of D-glucaric acid, a cholesterol lowering and cancer-fighting compound.

Grapefruit also contains lycopene, which helps to lower cholesterol. Grapefruit provides vitamin C, which helps to strengthen the immune system and ward off the common cold and flu. The main flavonoid in grapefruit is naringenin, a potent cancer fighter. In addition, grapefruit contains cancer-crushing limonene, limonin and nomilin, tumor-fighting lycopene, and cancer-fighting ferulic acid. 

Half a grapefruit or a glass of 100% grapefruit juice is a healthy addition to breakfast. 

Grapefruit may help to prevent cancer, cold and flu, high blood pressure and heart disease.