Changes to your body and brain are normal as you age. However, there are some things you can do to help slow any decline in memory and lower your risk of developing Alzheimer's disease or other dementias. They include: 

1. Exercise regularly.

Regular physical activity benefits the brain. Multiple research studies show that physically active people are less likely to experience a decline in their mental function and have a lower risk of developing Alzheimer's disease or other dementias

Exercise increases blood flow to your brain. It also tends to counter some of the natural reduction in brain connections that occur during aging, slowing or reversing some of the problems.

Purpose to exercise a number of  times per week for not less than 30 minutes. You can walk, swim, play or do any other moderate aerobic activity that increases your heart rate.

2. Get adequate sleep.

Sleep plays an important role in your brain health. Some theories state that sleep helps clear abnormal proteins in your brain and consolidates memories, which boosts your overall memory and brain health.

Seven  to eight consecutive hours of sleep per night is recommended. 

3. Diet

Diet plays a large role in your brain health. Consider following a diet which emphasizes plant-based foods, whole grains, fish and healthy fats, such as olive oil. It incorporates less red meat and salt.

Foods rich in omega fatty acids found in extra-virgin olive oil, and certain types of fiah and other healthy fats are vital foe healthy brain cells. They also decrease  risk of coronary artery disease, increase mental focus and slow cognitive decline in older adults.

4. Stay mentally active.

Your brain is similar to a muscle — you need to use it or lose it. There are many things that you can do to keep your brain in shape, such as reading, doing crossword puzzles or Sudoku, reading, playing cards or putting together a jigsaw puzzle.

 Reduce the amount of time taken in  passive activities such as watching TV since they do little to stimulate your brain.

5.  Social involvement

Social interaction helps ward off depression and stress, which can contribute to memory loss. Look for opportunities to connect with people. Solitary confinement may result into  brain atrophy, so remaining socially active may have the opposite effect and strengthen the health of your brain.

6. Keep your blood vessels healthy.

The health of your arteries and veins is important to your heart health but it is also critical for brain health. Get your blood pressure, blood sugar and cholesterol checked regularly and take steps to keep your numbers within a normal range.