What is Guava? What is Guava good for? All fruits are good for health but some have a better a nutritional value as compared to others. Filled with essential nutrients, Guava fruit acts as a remedy for various health problems. Some of the Guava Benefits are: prevents constipation, scurvy treatment, treatment of dysentary, diarrhea treatment and cancer prevention and its general health benefits are: controls blood pressure, cures cough, improves eye vision, maintains healthy cholesterol level and treatment of common cold. It can also be used for nourishment of skin and hair. Some skin benefits are anti-aging benefits, brightens and lightens complexion, hydrates skin and treatment of skin diseases and hair benefits are prevents hair loss. If this fruit is consumed in excess or if you are intolerant, you might experience some side effects or allergies. Guava side effects are: hair thinning, nail thinning, skin problems, tooth decay, weakness and possibly unsafe during pregnancy and its allergy symptoms are breathing difficulty, coughing, runny nose, sneezing, swelling of mouth tongue or lips and wheezing. Keep reading to get all the necessary information about Guava.