It is a part of normal aging. For each decade after 50, short-term memory dulls and the brain’s processing speed slows down. You might not be aware of it right away but its happening and it is normal. Thankfully, there are ways to counter the decline and to boost memory.
Get moving:
Exercise of any sort; be it walking or running is a definite memory booster. When exercising, your muscles release a signal that stimulates the part of the brain that stores information and learns things. A healthy brain needs oxygen, so any exercise that gets the heart pumping a bit stronger is feeding the brain.
Eat brain food:
Eating a Mediterranean diet that is rich in green leafy vegetables including broccoli, kale, cabbage as well as berries, whole grains, walnuts, and fatty fish such as salmon is good for the brain.
https://www.everydayhealth.com/mediterranean-diet/guide/
Enjoy word games or activities with friends:
Activities that combine exercise, socializing, and cognition are valuable. Games such as scrabble or activities such as pickle ball or dancing that involve socializing skills, works your memory, and include social benefits are key to a healthy brain.
https://www.cbc.ca/radio/whitecoat/the-dose-memory-1.6480493
