Among the claims for guavas are that they improve heart health, blood sugar levels, painful menstruation, digestion, and skin.

Guava (español: guayaba) is a tropical fruit cultivated in many tropical and subtropical regions. Psidium guajava is a small tree in the myrtle family, native to Mexico, Central America. Guavas are typical Myrtoideae, with tough dark leaves and white flowers with five petals and numerous stamens. The fruits are many-seeded berries. I had just moved to Guadalajara, Mexico, when I tasted my first guayaba. I was hooked. When ripe, the guayaba, or guava, is very sweet and delicious, peeling, seeds and all. Just wash and eat it like an apple. They are also made into a popular candy called ate. (pronounced ah-tay). Guayabate is one of my favorite sweets.

1 raw guava (100 g)
calories 63
carbohydrates 14.32 g
fat 0.95 g
fiber 5.4 g
sugars 8.92 g
vitamin A 624 IU
vitamin C 228.3 mg
Sources: Wikipedia / healthline / MedicalNewsToday