We're not talking athlete's foot or the common cold here. Yet the slight upward nudge in fruit consumption is barely detectable. Maybe their sweet tooths are sated by sodas, cakes, and ice cream. Maybe it's too tough to get good fresh fruit at restaurants, snack bars, or the office. Whatever the reason, fruit ought to be an everyday pleasure, not medicine.
Any fruit is good fruit.
Some studies find a lower risk of cancer among people who eat more fruits and vegetables rich in carotenoids and vitamin C. Others find a lower risk among people who eat more of any fruits or vegetables. But fruit aficionados may want to pick the most nutritious of the bunch. Some like beta-carotene are converted to vitamin A by the body. You still gotta respect its numbers. What sets guava and other super-scorers apart are impressive quantities of vitamin C, carotenoids, or both.