Rhizolutin, a compound produced by bacteria in the soil of the roots of ginseng plant, has been shown to fight the amyloid-beta and tau protein aggregates that are characteristic of Alzheimer's disease.

People with a positive outlook, or "positive affect", meaning they have enthusiastic and cheerful qualities, are less likely to experience memory decline with age.

The previous body temperature standard of 98.6 degrees Fahrenheit may not be accurate. Two studies found that body temperature is dropping, with averages ranging from 97.5-97.9 degrees.

Night owls, also known as delayed sleep phase disorder, may stay up so late due to a common genetic mutation in a protein called the cryptochrome, which alters a key component of the circadian rhythm.