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1. No Breakfast:
    People who do not take breakfast are going to have a lower blood sugar level. This leads to an insufficient supply of nutrients to the brain causing brain degeneration.

2. Overeating:
    It causes hardening of the brain arteries, leading to a decrease in mental power.

3. Smoking:
    It causes multiple brain shrinkage and may lead to Alzheimer disease.

4. High Sugar consumption:
    Too much sugar will interrupt the absorption of proteins and nutrients causing malnutrition and may interfere with brain development.

5. Air Pollution:
    The brain is the largest oxygen consumer in our body. Inhaling polluted air decreases the supply of oxygen to the brain, bringing about a decrease in brain efficiency.

6. Sleep Deprivation:
    Sleep allows our brain to rest. Long term deprivation from sleep will accelerate the death of brain cells.

7. Head covered while sleeping :
   Sleeping with the head covered increases the concentration of carbon dioxide and decrease concentration of  oxygen that may lead to brain damaging effects.

8. Working your brain during illness:
    Working hard or studying with sickness may lead to a decrease in effectiveness of the brain as well as damage the brain.

9. Lacking in stimulating thoughts:
    Thinking is the best way to train our brain, lacking in brain stimulation thoughts may cause brain shrinkage.

10. Talking Rarely:
     Intellectual conversations will promote the efficiency of the brain