In this July 1, 2008, file photo, a 7-Eleven is shown in Palo Alto, Calif. The convenience store chain announced Jan. 17, 2017, that it plans to sell a breakfast pizza.
A masala dosa is a staple of south Indian cuisine. It's a thin pancake of fermented rice and lentils, traditionally served with spiced potatoes.
Doctors attribute longevity to a combination of diet, genetics, and environment, but they are yet to discover any one single factor that guarantees a long life, or even, for that matter, an early death. Substantial evidence exists that certain vices like cigarettes, alcohol, and sugar-sweetened beverages are dangerous and have adverse health effects, but some of the world's oldest people consume them regularly and live into their 100s.