A Study suggests that loneliness can change people's immune systems, making them more prone to illness and early death.
The feeling of extreme isolation can stimulate a biochemical vicious circle that makes patients feels even lonelier than they had felt initially.
In England, it has been stated that over half of the people aged 75 live alone. An estimated five million pensioners only have their television for company.
Loneliness could have a big affect on millions.