What is Feijoa? What is Feijoa good for? All fruits are good for health but some have a better a nutritional value as compared to others. Filled with essential nutrients, Feijoa fruit acts as a remedy for various health problems. Some of the Feijoa Benefits are: reduces nervous tension, treatment of alzheimer's disease, treatment of lung disease, anti depressant and cancer prevention and its general health benefits are: digestive aid, helps in weight loss, improves blood circulation, strengthens bones and treatment of common cold. It can also be used for nourishment of skin and hair. Some skin benefits are brightens and lightens complexion and skin rejuvenation and hair benefits are promotes longer and healthier hair and protects hair. If this fruit is consumed in excess or if you are intolerant, you might experience some side effects or allergies. Feijoa side effects are: allergic reaction and its allergy symptoms are na. Keep reading to get all the necessary information about Feijoa.