After seventy, the body responds more slowly to heat and cold. Many older adults feel chilly when others are comfortable. Others overheat quickly in warm environments. Sweating becomes less effective, which makes cooling down harder. This is more than discomfort. It increases the risk of heat exhaustion or hypothermia. Dressing in layers, avoiding extreme temperatures, and drinking enough fluids help the body cope with these changes.
Digestion also shifts with age.
The stomach produces less acid. Intestinal movement slows. Absorption of certain nutrients becomes less efficient. As a result, people may feel full faster, experience constipation, or develop deficiencies in vitamin B12, iron, or calcium. These symptoms are often dismissed as normal aging, but they are signs that the digestive system needs support. Smaller meals, fiber rich foods, and regular hydration help keep digestion working smoothly.