Cancer results from uncontrolled cell growth and tumor formation. Most cancers are non-hereditary (sporadic) and caused by DNA damage. Less than 0.3% of population carries cancer-related genetic mutations. BRCA1/2 mutations increase breast and ovarian cancer risk by over 75%
Pattern hair loss affects scalp top and front, with male-pattern baldness and female-pattern baldness. By age 50, affects about half of males and quarter of females. Male pattern baldness shows 80% hereditary predisposition
Athlete refers to person competing in sports involving physical strength, speed, power, or endurance. Term can mean specific sport of athletics competitors or all athletics participants. Athletes can be professionals or amateurs
Maximum life span is the longest time a population member has survived between birth and death. Maximum span is often defined as the life span of the most long-lived 10% of a cohort. Maximum span differs from mean life span, which varies with disease and accidents
US data shows average 13-year-old boy is 162.5 cm (5'4"). Polish study found average 13-year-old boy is 161.5 cm (5'4"). US data shows 25% of 13-year-old boys are under 5'2". US data shows average 13-year-old girl is 158.1 cm (5'2"). Polish study found average 13-year-old girl is 160.5 cm (5'3")
Chronic skin inflammation disease that causes itching and irritation. Not contagious and can affect anyone at any age. Symptoms include redness, oozing, crusting, and scaling. Disease alternates between flares and remissions