7.Smoking
Smoking seems to shrink parts of your brain that help you think and remember things. It also raises your risk of dementia, possibly because it’s bad for your blood vessels. And it definitely raises your risk of stroke, which can damage the brain and cause vascular dementia. Talk to your doctor or a mental health professional if you smoke and want to quit.
8.High Blood Pressure
Also called hypertension, it raises your risk of memory problems, including dementia, most likely because it damages the tiny blood vessels in your brain. It also can lead to other conditions like stroke that cause dementia. People who control their blood pressure with diet, exercise, and medication seem to be able to slow or prevent this brain decline.