KINE 2202 Lecture Notes - Lecture 15: Mutation, Stress Management, Relate
Document Summary
Biology of aging: the causes of aging are still being debated. Wear and tear theory: over time, an accumulation of damage from both internal and environmental sources eventually wears the body out. Cellular theory: from birth, cells are genetically programmed to divide or reproduce a limited number of times. Once they end their cycle, they die and organs deteriorate. Genetic mutation theory: the number of body cells exhibiting unusual qualities increases with age, so aging is related to the amount of mutational damage within genes. Lifestyle choices can help delay aging: physical activity. Regular exercise throughout life diminishes the risk of disease, reduces the chance of injury, and protects against declines in cognitive ability and memory: nutrition. Maintaining a low-calorie diet while still consuming appropriate levels of nutrients may extend lifespan: stress management and emotional wellness, chronological age versus physiological age. Chronological age: your actual age in years, months, and days since birth.
