Privately owned Atkins Nutritionals Inc. has filed for bankruptcy, as the low carbohydrate diet fad has continued to fizzle, impacting the company’s sales. The latest figures show only 2.2 percent of consumers are following a low carbohydrate diet, down from 9 percent at the height of the craze, the “London Times” reported. Founder Dr. Atkins, who died in April 2003, received the National Health Foundation award in 1985. The diet has never been endorsed by the American Medical Association, which says it lacks scientific basis, and risks coronoray artery disease.