Connect with people with the help of social networks like Facebook, Netlog or MySpace, can cause the formation of cancer, heart disease, a stroke and demention.

That is conclusion of doctor Aric Sigman which published results of his research in the Journal of British Institute of Biology.

He thinks that socializing with the help of electronic messages may cause deterioration of the immune system, hormones change and the functioning of the arteries and affect mental health.

Some hormones, such as oksitocin, which is good for our health, our body makes only in the physical company of people.

Also, some genes governing immune system to reduce stress, react much quicker when people talking about”eyes”in the eyes, says Sigman.