1, brain As you age, certain parts of the brain shrink and signal transmission between different areas slows, which means you may have memory loss and be unable to multitask and concentrate. 2, cardiovascular problems As we age, the heart does not beat as fast during exercise or when under stress. The heart’s walls are thick or the valves are hardened, and blood may not flow efficiently through them. The heart’s conductive system becomes abnormal, and this can lead to an irregular heart rhythm. The most common problem is arterial plaque, and positive health habits (such as exercising, quitting smoking and drinking) can reduce the corresponding risk of disease. 3. Skin Age spots and wrinkles may appear, as well as bruising, less sweating, dry skin, and itching easily. You can use some mild soap and regular moisturizer. 4.Nutrition Metabolism slows down with age, so you need to reduce excessive food intake to prevent weight gain, eat more fruits and vegetables, whole grains, low-fat dairy products and high protein, and take appropriate vitamin D and B12 supplements. 5.Bones, joints and muscles People over 65 are prone to osteoporosis, muscle atrophy and weakening, tendons harden, which can reduce strength and flexibility, and height may decline, and active The exercise can help prevent these changes, or even reverse them. 6, sleep At older ages, deep sleep time is less, waking up more often, it is difficult to fall asleep. Insomnia can be a serious problem, especially for women. In general, you still need to sleep 7-8 hours a night to maintain good sleep habits. 7, immune system The body’s immunity is reduced, which makes you more susceptible to disease and viral infections, so it is important to prevent the flu, pneumonia and shingles. 8, digestive system The stomach lining is more fragile, increasing the chances of developing ulcers, more so if you take a lot of aspirin or non-steroidal anti-inflammatory drugs (NSAID). The other most common problem may be constipation, mainly due to decreased digestive system function, which may also result from medications and lack of exercise. 9.Urinary tract The bladder does not stay strong enough as it used to, so it may make you go to the bathroom more often. Women may also experience stress leaks, and in men prostate disease is likely to cause trouble. 10, steps that can be taken Diet and exercise are important, and monitor health, especially to watch out for problems such as cancer and heart disease.