The study included 4,164 people with an average age of 59 years, and indicated that the three factors increased rates of cognitive impairment, declining memory power, and signs of brain shrinkage.
Study participants took tests of memory and other thinking skills, such as speed of information processing and attention.
The study identified three lifestyle factors that increased the risk of dementia and cognitive decline.
The World Health Organization, which indicated that smokers are 45% more likely to develop dementia than non-smokers.
The study indicated that diets rich in saturated and trans fats increase cognitive decline and the risk of dementia. As well as not exercising.
The study pointed out that proper nutrition and exercise can affect the formation of neurons in the "hippocampus", which is a small dendritic in the brain, located below each of the temporal lobes, and plays an important role in the formation of memories, by which the brain produces new cells.
The study warned of the high blood pressure factor, especially in middle age, as it is a contributing factor to dementia.
High pressure causes damage and narrowing of the blood vessels in the brain; This increases the chances of rupture or blockage.