According to US scientists, when pregnant if the mother mouse is infected with nicotine, the pups will suffer from cognitive impairment.
According to Nature Chemistry, a group of scientists at the University of California, USA, found a drug that can defeat Alzheimer's disease.
People who see the world around them from a negative perspective are at increased risk of cognitive decline later.
US researchers say resveratrol, the substance found in red grapes and red wine, works against hearing and cognitive decline, according to UPI news agency.