Common changes that may appear after age 75 and how to deal with them in a healthy way.

January 19, 2026 by Nadia

Below are five major transformations that commonly occur after age 75.
5. Sleep patterns are reshaped
After 75, the brain no longer sleeps the way it once did.
The phase of deep sleep, essential for tissue repair, memory consolidation, and physical recovery, becomes much shorter. At the same time, the body produces less melatonin each year, making it harder to fall asleep and remain asleep.

Your internal clock also shifts earlier. You may feel sleepy sooner in the evening and wake up very early in the morning. Sleep becomes lighter and more fragmented, with frequent awakenings during the night, even if you don’t always recall them.

This doesn’t mean sleep is worse—just different. Trying to force old routines often leads to insomnia and frustration. Your body is simply operating on a new rhythm.

4. Temperature regulation weakens
The body’s ability to manage heat and cold declines.
Neurons in the brain that sense temperature decrease, the skin becomes thinner, and metabolism generates less internal heat. Continue reading…