200 to 300 milligrams

The daily dose of caffeine linked to a lower risk of coronary heart disease, Type 2 diabetes and stroke. After a whole lot of testing, scientists say the sweet spot is two to three cups of coffee or up to three cups of tea per day. I use this iced tea maker at home and at the office!

We may receive a commission when you buy through our links, but our reporting and recommendations are always independent and objective.

Tags: home, risk, scientists, testing