onions and mushrooms
The allium family of vegetables include onions,garlics,leeks,chives,shallots,and scallions.They have beneficial effects on cardiovascular and immune system as well as anti diabetic and anti cancer properties.Garlic and onion contain phytochemicals,flavonoids and phenols,some studies showed that they prevent breast and digestive cancers.Mushrooms where long considered part of a gourmet diet ,but today they are recognized as an important food for health.Recently a number of anti tumor agents have been identified in mushrooms that might prevent cancer cells from dividing or replicating.
Unfortunately some people do not digest garlic and onion because of IBS (irritable bowel syndrome) or other causes and must keep a food diary or consult their doctors to be able to have them as part of a healthy diet.