![]() ![]() People don't like getting older, but they do like changing. The amount of blood pumped by your heart decreases by almost 50% by the time you’re 90 years old.Heart diseases are the leading causes of death for people over the age of 65, since the heart’s ability to function decreases with age. ![]() Old people can increase their heart rate to 150 beats per minute younger people can increase the rate to over 200.Adults who exercise are less likely to have a cardiovascular disease when they grow older.In clinical studies, the lungs of habitual smokers appeared to be 10–15 years older than the lungs of their same-aged counterparts who did not smoke. Breathing becomes more difficult as the body ages, since the amount of air that can be inhaled and stored in the lungs decreases over time.Osteoporosis, a common disease that affects the levels of calcium and minerals in bones, affects women more often than men.Bones lose calcium as they grow older, making them more fragile and likely to break.In the early 1900s, sex glands from animals were transplanted into human males in an effort to rejuvenate their sex hormones, but these experimental efforts did not work. ![]() ![]()
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