Across ancient traditions, the egg has symbolized the circle of life.

Affecting up to 13 percent of people aged between 60 and 70 years, sarcopenia is typically age-related but can be caused by other underlying conditions.

Age-related macular degeneration is the most common cause of blindness in developed countries, accounting for 8.7 percent of all types of blindness worldwide.

About half of U.S. adults have hypertension, yet only a quarter of them have it under control.