Watermelon may have Viagra effects

Watermelon may have similar effects as Viagra, a scientist says. While this is perhaps an explanation for why many picnics end in embarrassment, it isn't entirely certain that you should throw away your pills just yet. It contains a "phyto-nutrient" called citrulline which relaxes blood vessels, which is apparently how Vaigra does its magic.

Says Dr. Bhimu Patil, director of Texas A&M’s Fruit and Vegetable Improvement Center:

"The citrulline-arginine relationship helps heart health, the immune system and may prove to be very helpful for those who suffer from obesity and type 2 diabetes... Arginine boosts nitric oxide, which relaxes blood vessels, the same basic effect that Viagra has, to treat erectile dysfunction and maybe even prevent it."