Peanut allergies may be worse when the nuts are dry roasted.

Scientists say dry roasting causes chemical changes in the nuts, and if a person's immune system picks up on that, it may get the body ready for an allergic reaction.

Researchers are trying to figure out exactly what chemical changes are happening.

Chocolate may improve memory

A new study shows that an antioxidant in chocolate improves memory skills that people usually lose with age.

In the study, people who drank a mixture containing that antioxidant did 25 percent better on memory tests than those who didn't drink it. One theory is that it improves blood flow to the brain.

Cow milk best for Vitamin D

The type of milk you drink may have an effect on your Vitamin D levels.

A new study shows that kids who drank only milk from sources other than cows - such as almond milk - were three times as likely to lack the appropriate amount of Vitamin D in their blood compared to kids who only drank milk from cows.

Experts say that while alternate milks such as almond and soy are healthy for other various reasons, regular milk is best for getting Vitamin D.