Your husband presnets the typical progile of 'junk food addiction'. This is now a recognised addiction problem in which the person becomes addicted to junk food, in much the same way as some people get addicted to drugs. This is a treatable condition, you should approach a deaddiction clinic, or any psychologist who can refer you to one, and get him treated. You may look up this site for more info on junk food addiction:
http://www.bupa.co.uk/health_information/html/health_news/190703addic.html
