April 2026

Billion-dollar drugs have been pulled from the market for less carcinogenic contamination than is found in a single serving of grilled chicken. In 2018, one of the bestselling blood pressure drugs, valsartan—sold as Diovan—was found to be contaminated by the “probably carcinogenic” nitrosamine known as N-nitrosodimethylamine (NDMA). It’s believed that about 20 million people worldwide […]

What did randomized, controlled human trials find about the ways we may—or may not—benefit from eating onions? Onions are potentially a good source of antioxidants, which, interestingly, are concentrated in the outer layers just beneath the papery peel. White onions, for example, contain more than ten times the antioxidants in the outer layer compared to

What can physicians do to promote healthy, life-extending lifestyle changes? A pivotal paper published in Europe more than a decade ago entitled “Healthy Living Is the Best Revenge” found that practicing just four simple, healthy lifestyle factors compared to none could potentially have a strong impact on preventing chronic diseases. We’re talking nearly 80% less

What are the risks and benefits of using vitamin C for depression and anxiety? “In adults, emerging evidence suggests that higher daily intake of fiber-rich fruit and vegetable servings is associated with lower incidences of anxiety, greater happiness, higher life satisfaction, and greater social-emotional well-being,” says a review in the journal Nutrients. So, “persuading people

Are yellow-fleshed potatoes healthier than white? And what about the glycoalkaloid toxins? The high glycemic impact of potatoes may increase the risk of type 2 diabetes, perhaps by chronically overstimulating the insulin-producing cells in the pancreas. In my last two blogs, I explained how you can decrease the glycemic impact of white potatoes by eating

Broccoli, vinegar, and lemon juice are put to the test to blunt the glycemic index of white potatoes. White potatoes have a high glycemic index, and consumption of high glycemic impact foods may increase the risk of diabetes. Normally, after a meal, we’d like our blood sugars to rise and fall gently and naturally. But

If you eat potatoes when they’re cold, as in potato salad, or chilled and reheated, you can get a nearly 40% lower glycemic impact. If you systematically pull together all the best studies on potato consumption and chronic disease risk, an association is found for the risk of type 2 diabetes and hypertension—but that’s for

NutritionFacts.org has a wide range of resources to help you on your journey to a healthier life. Primers Learn More Learn More Learn More   The How Not to Die Documentary In celebration of the 10th anniversary of the publication of How Not to Die, the Greenbaum Foundation commissioned a documentary about Dr. Greger’s life

Do potato eaters live longer or shorter lives than non-potato eaters? Is there a link between potato intake and the incidence of hypertension? Harvard researchers followed the diets and diseases of more than 100,000 men and women for decades and found that those who ate potatoes on most days—not only French fries and potato chips,