Health and Safety | Weight Watchers UK | WW UK

Terms and Conditions

Health notices

The WW weight loss and wellness Plan was developed by respected health professionals. However, WW isn't a medical organisation and we can't give you medical advice. We strongly urge you to consult with your primary health care provider (e.g., GP or nurse practitioner) before starting any plan that could result in weight loss, even if weight loss is not your goal. We encourage you to maintain your weight within the healthy weight guidelines endorsed by the World Health Organisation, equivalent to a Body Mass Index (BMI) between 18.5-25.0. However, we recognise that BMI is an imperfect measure of an individual’s health and that other factors may be a more robust predictor of certain health outcomes. You can calculate your BMI here.

We also urge you to get periodic medical checkups. Weight loss can create physical changes that should be medically monitored. Studies have shown, for example, that weight loss can aggravate gall bladder illness. Weight loss is not advised for people with BMI below the healthy range. Medical monitoring is especially important for people with a known medical condition. The Plan encourages a healthier pattern of eating and the development of healthy lifestyle habits, however it is not intended to treat any illness or disease. In addition:

  • WW prohibits participation in its weight loss and wellness plan for anyone under the age of 18, individuals who have been diagnosed with or treated for anorexia nervosa or bulimia nervosa in the last year, and individuals who are pregnant.

  • WW also prohibits subscription to our online products and offerings by individuals under age 18 years.

  • If you are being treated for a medical condition, taking prescription medication, or following a therapeutic diet to treat a disease, it's especially important to show the WW plan to your health care provider. Any modifications made to the plan by your health care provider should be followed.

  • WW will provide an intake target and adjustment instructions as needed to promote a healthy weight. The WW weight loss plan is designed for a safe rate of weight loss - up to two pounds per week (after the first three weeks). If you lose at a greater rate, you must review the Plan guidelines and adapt them, if necessary, to avoid rapid weight loss. Not following the Plan as designed may pose the risk of developing health complications associated with rapid weight loss.

  • We recommend that you monitor your weight once per week. If your weight falls below guidelines for a healthy weight, you must review the Plan guidelines and adapt them to maintain a healthy weight. WW also recommends that you discuss your goals for participating in WW with your health care provider. Not following the Plan as designed may pose the risk of developing health complications associated with low body weight.

  • You are not required to set a weight loss goal to join WW. You may opt to maintain your current weight while developing healthy habits. Members with a BMI below 18.5 are not permitted to set a weight loss goal.

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