Slimming World is a weight loss organisation based in Derbyshire in England that caters for men and women[3] of all ages.

Slimming World offers an eating plan based on food satiety and energy density as well as a group support service called IMAGE Therapy.

[citation needed] Slimming World launched its charity SMILES (Slimmers Making It a Little Easier for Someone) in 1997 and has since raised more than £25,000,000 for good causes.

In 2011, a paper in the journal Obesity Facts showed patients attending at least 10 sessions achieved a clinically significant loss of 5% of their body weight.

[8] In its 2014 guidance, the National Institute for Health and Care Excellence lists Slimming World alongside the Rosemary Conley and Weight Watchers programmes as being "effective at 12 to 18 months".