Doctors say that most people in Japan who have eating disorder are not getting medical or psychological support.
It is claimed that Japan’s health system is failing by the Japan Society for Eating Disorders.
It adds that girls have become more obsessed with the thought to be thin.
The government says that it is doing its level best to gauge the extent to which the problem has gone.
Some of those who have been involved in the eating disorder say that their reason for doing is because they hate being chubby. They are usually bullied and they want to change that.
In some, the eating disorder starts as early as the age of 14 years. By the time they get to 19 or 20 years, the disorder escalates to the level that they become dangerously underweight.
Stigma around eating disorders – for both families and sufferers – have made many people hiding instead of coming out into the open.
“They see actions such as binging on food and then vomiting (bulimia) as shameful,” says clinical psychiatrist Dr Aya Nishizono-Maher, a member of The Japan Society for Eating Disorders.
“They feel they have to hide it. Parents may think they are wasting food so that might stop them seeking help.”
The Japanese government has said that getting an accurate picture of the incident is not easy, considering the difficulty in most of them to come forward.
The prevalence can be compared to that of United Kingdom.