Rachael is an A-level student and says she wants to lose weight for the right reasons which in her case are to prevent health problems. She has Polycystic Ovary Syndrome (PCOS) which, in turn makes it difficult to lose weight. She is also concern about diabetes and heart disease. Rachel is a size 20/22 and would like to drop to a 14/12. Ethnic background: White British.

Rachel, 16, recently went to see her doctor because she was worried that she was overweight. Although the doctor said her weight was average for her height according to the BMI (body mass index) chart, she still feels worried. Ethnic background: White other.

Bella, 15, loves drama because it helps her switch off and feel like a different person. She thinks confidence is the most important thing because it can help you feel more comfortable with everything. Ethnic background: White British.

Daniel, 14, is into acting and dancing and says he once lost a part because he didn't look right. Daniel has lost 2 stone and now speaks at conferences, helping health professionals to understand about what it's like to be overweight from a child's perspective. Ethnic background: Iranian English.

Emily, 14, found out that her BMI was in the 'obese' category when a Health Bus visited her school and weighed her. Since then, she has been attending a weight management group and has lost over 2 stone. Ethnic background: White British.

Izzy is 13 and started attending a weight management programme and found it really helpful because everyone's in the same situation. Izzy is worried about developing health problems because of her weight. Ethnic background: White English.

Shannon is 12 and has been gaining weight since she was very small and has always been a bit bigger than her friends of the same age. She has lost a stone in weight after attending a weight management programme. Ethnic background: White British.

Olivia, 18, is a student and does voluntary work with young people. She is in recovery from anorexia. Ethnic background: White British.

Huw, 17, said that he has had a problem with his weight for as long as he can remember. In the past he followed different dieting programs to tried and lose weight but didn't make much of a difference. Recently he did the total food replacement programmed and had lost two and a half stone. After the interview he has lost a further two and a half stone. Ethnic background: White British.

Edward, 18, is a medical student. He does lots of exercise to try to achieve what he considers to be the ideal male body image. Ethnic background: White British.