Nutrition

Climate change is predicted to decrease the amount of selenium (a trace mineral necessary for good health) in the soil, which could worsen the already frequent occurrence of selenium deficiency worldwide.

Magnesium supplementation improves blood sugar levels in people with type 2 diabetes and reduces insulin resistance in people at high risk of type 2 diabetes.

European Journal of Clinical Nutrition

Women who eat lots of fruits and leafy-green salads may have a slightly lower risk of developing breast cancer.

British Journal of Cancer

Sugar-free sweets can help prevent tooth decay, but those that contain acidic flavoring, such as citric acid, may contribute to tooth enamel erosion.

Young adults who had high-protein milk (about 23 grams per 250mL) with their breakfast cereal had lower blood sugar than those who had normal milk (about 8 grams per 250mL).

People buy more sugar-sweetened drinks in convenience stores with fewer types of fruit and vegetables available. People who are poorer and less educated shop more often in convenience stores.

American Journal of Health Promotion

When surveyed, almost 1 in 5 Americans report that they have a food allergy, but only 1 in 10 report symptoms consistent with food allergies or have received a diagnosis from a physician. This suggests that around twice as many Americans believe they have a food allergy than actually do.

Taking estrogen-containing birth control is linked to higher levels of vitamin D for African-American women; however, those who stop taking birth control could increase their risk of vitamin D deficiency.

In women of reproductive age, mild iron deficiency was associated with lower levels of physical activity, temperamental traits such as irritability, and reduced mental endurance on an intelligence test.

Physiology & Behavior

Drinking alcohol is associated with a greater risk of cancer and all-cause mortality. The only amount of alcohol consumption that is not associated with an increased health risk is zero.