Passive smoking leads to dementia

Passive smoking increases a person's risk of dementia and other forms of cognitive problems, British and US researchers have said. 

The report, published in the British Medical Journal on Friday, found a 44 percent increased risk for passive smoking. 

"Our results suggest that inhaling other people's smoke may damage the brain, impair cognitive functions such as memory, and make dementia more likely," said David Llewellyn of Britain's University of Cambridge, who led the study. 

Earlier research proved that passive smoking leads to lung cancer and heart disease. 

The World Health Organization (WHO) says that more than half of children in the world inhale second-hand smoke in their homes. 

Previous studies had linked smoking during pregnancy with an increased risk of miscarriage and birth defects. 

Smoking can also increase the risk of developing diabetes, one of the main causes of morbidity and mortality in the world, by seven percent.

Mediterranean diet tackles dementia

Following a Mediterranean diet rich in fruits, vegetables, fish and olive oil can help improve memory and tackle Alzheimer's disease. 

According to a study published in the Archives of Neurology, following a healthy diet lowers the risk of developing mild cognitive impairment, characterized by forgetfulness and difficulty in concentrating, as well as the risk of subsequent Alzheimer's disease. 

Adopting a strict diet lowered the mild cognitive impairment risk by 28 percent, whereas moderate adherence to such diet was associated with a 17 percent lower risk of developing mild cognitive impairment. 

Individuals with mild cognitive impairment who eat a Mediterranean-style diet are 45 percent less likely to make the transition into Alzheimer's disease. 

Scientists concluded that following this diet helps keep the brain healthy through reducing inflammation and improving cardiovascular risk factors such as elevated cholesterol and blood sugar levels.