Federica Amati said people focus too much on eating enough protein. The source of protein is more important, she said.

Red wine is also a rich polyphenol source – although Del Rio advises ... so there’s another reason (in addition to avoiding food waste) to use those frequently-thrown out odds and ends.

Consuming foods rich in these substances can help ... are found in grape seeds and pomegranates. Other significant sources of polyphenols include apples, pears, blueberries, black chokeberries ...