Actress-singer Miley Cyrus has hit back at Twitter followers who hinted that she has an eating disorder - saying her slim figure is due to food intolerances. Cyrus, who previously sparked rumours about her weight when she was pictured out jogging last week in California, fuelled further speculation when she posted a snap of herself on Twitter sniffing a paper bag of fast food. She wrote alongside the photo: "Can't eat it so I'm just gonna smell the s*** out of it! My mouth is literally watering." However the 19-year-old's remarks led to a string of responses from users of the social networking site accusing her of taking her eating habits to extremes - until she hit back. She added: "For everyone calling me anorexic I have a gluten and lactose allergy. It's not about weight it's about health. Gluten is c**p anyway!" Pictured: Miley Cyrus Splash News and Picture Agency does not claim any Copyright or License in the attached material. Any downloading fees charged by Splash are for Splash's services only, and do not, nor are they intended to, convey to the user any Copyright or License in the material. By publishing this material , the user expressly agrees to indemnify and to hold Splash harmless from any claims, demands, or causes of action arising out of or connected in any way with user's publication of the material.