About 1% of Americans live to be centenarians. You can increase your longevity by avoiding health issues that come with age. Below are health conditions organized by decade, tips for preventing them, and resources for healthy aging. Stages of Life 20's Cancer is unlikely in the 20’s, but other health challenges can occur like infertility, muscle atrophy, sexually transmitted diseases, and weight gain. Protect skin with sunscreen and avoid over exposure to sunlight. Follow best practices for hygiene and nutrition. Maintain well-being with exercise and social activity throughout life. Get medical checkups every few years. 30's Slowing metabolism makes weight control more difficult in the 30’s. Hair may start receding, thinning, or turning gray. Skin cells won't form as quickly as in earlier years. Start using moisturizers and watch for unusual skin growths. Consider coloring to camouflage gray hair. Prioritize well-being with a nutritious diet, exercise schedule, and fitness