Use weight-loss programmes (including commercial or self-help groups, slimming books or websites) only if they:

• are based on a balanced healthy diet
• encourage regular physical activity
• expect people to lose no more than 0.5–1 kg (1–2 lb) a week.

Programmes that do not meet these criteria are unlikely to help people maintain a healthy weight in the long term.

Effective weight-loss programmes should also:

• address the reasons why someone might find it difficult to lose weight
• be tailored to individual needs and choices
• be sensitive to the person's weight concerns
• identify and address barriers to change.

If you have certain medical conditions – such as type 2 diabetes, heart failure or uncontrolled hypertension or angina – check with your general practice or hospital specialist before starting a weight loss programme.