Understanding what’s happening inside your body can help you stay active, independent, and resilient.
1. Why Sleep Feels Lighter
One of the most common changes after 70 is disrupted sleep. This doesn’t necessarily mean insomnia. It often results from natural changes in the brain.
As we age, the body produces less melatonin—the hormone responsible for deep sleep. At the same time, your internal clock becomes more sensitive to light, noise, and routine changes.
What you may notice:
Waking up more often during the night
Taking longer to fall back asleep
Helpful habits:
Get sunlight exposure in the morning
Reduce screen time (phones, TV) at least 1 hour before bed
2. Changes in Temperature Regulation 2. Changes in Temperature Regulation
The body’s internal “thermostat” becomes less efficient with age. You may feel cold or hot more quickly than before.
What you may notice:
Feeling cold even indoors
Overheating more easily
Helpful habits:
Wear light, breathable layers
Stay well hydrated throughout the day
3. Slower Digestion and Nutrient Absorption 3. Slower Digestion and Nutrient Absorption
Digestion naturally slows as stomach acid decreases and intestinal movement becomes less active. This can affect how your body absorbs key nutrients like vitamin B12, iron, and calcium.
What you may notice:
Feeling full quickly
Occasional constipation
