• Michael Pollan has been studying America's unhealthy food system for nearly two decades.
• Vegetables are some of his favorite foods. 
• He loves brassicas like broccoli, which scientists believe have anti-cancer properties. 

It's no secret that Michael Pollan loves plants. He's been encouraging folks to eat more real food — especially veggies — for nearly two decades.

Pollan, the author of "The Omnivore's Dilemma" and "In Defense of Food," said that vegetables can function as preventive medicine — and they provide more health benefits than taking pricey supplements.

Broccoli Benefits: Anti-Cancer Supplement (businessinsider.com)