Common changes that can occur after age 70 and why it’s important to know about them early

The body becomes slower to respond to heat and cold. You may feel chilled when others are comfortable, or overheat in situations that once felt normal. Sweating may decrease, which makes cooling down less efficient.

This isn’t just discomfort—it can increase risk.

Layering clothing, even indoors, becomes a practical strategy rather than a preference. Avoiding sudden exposure to extreme temperatures helps the body adjust more gradually. Hydration also plays a larger role, as fluid balance supports temperature control more than many realize.

Digestion is another system that quietly shifts.

The stomach produces less acid. The intestines move more slowly. Nutrient absorption becomes less efficient.

The result can be subtle at first—feeling full sooner, experiencing more frequent constipation, or developing deficiencies that don’t immediately show obvious symptoms.

Many people assume this heaviness is simply “part of getting older.”

But it’s more accurate to say the digestive system now requires a different kind of care.