ISLAMABAD: As per a new study, it is not a good idea to consume too much potatoes, tomatoes and cucumbers because these contains a protein that may lead to Alzheimer's disease.

A heart surgeon and cardiologist from California, Dr Steven Gundry said that he found a link between memory loss and lectins, which are found in cucumbers, tomatoes, whole grains, soy, grains, peppers, sprouted grains and some dairy products.

Gundry said that such food could even lead eaters to develop dementia. According to researchers, lectins are harmful to the gut and could cause a host of issues, and possibly memory loss.

England's Dr Tom Greenfield examined the effects of lectins on different blood types and said that the protein can `absolutely' play a role in brain disorders. He said the protein impacts people differently and the damage they can cause really comes down to a person's genetics.

Greenfield explained that there is a specific link to blood types and avoiding all lectins is not possible because some might be good for some people and bad for others.

Greenfield further stated that lectins can change body, immune system and blood levels. They can block insulin receptors and over time this can affect blood vessels, even in the brain.