Regularly overindulging in simple, high-GI carbs—the kind that produce the beloved sugar rush—can be dangerous. "There's a lot of evidence that blood glucose spikes are bad for your heart and can raise your risk for type 2 diabetes," says Brand-Miller. "We're beginning to think that type 2 diabetes develops from a process of exhaustion, in which the cells that produce insulin just can't keep up with the high demand, day after day, year after year." Those glucose spikes, says Brand-Miller, are also thought to indirectly cause irritation of the cells lining the blood vessels, which can lead to inflammation and plaque buildup—risk factors for heart disease.
Declutter your life! Our March issue features a complete guide to streamlining your life, from Peter Walsh's 30-Day Organization Challenge to innovative ways to clear your mind. Plus, go behind the scenes of Oprah's yard sale and find out how you can improve the world with a simple "hello."