The Science Library: read all about it!


Are you wondering about the science behind Weight Watchers, or just want to learn more? Our virtual library will answer all your questions…

Browse all our topics from A-Z

Weight loss physics

How does the energy in food and your metabolism factor into your weight?

Your mind on weight loss

Start learning how we make changes in our behaviour – and how those new skills will help you to maintain your losses

Your healthy weight

Why BMI is the best way to find your healthy weight – and why losing might help you to avoid disease.

Losing weight the sustainable way

How will your meetings encourage your weight loss? And what eating plan is the right one? Find out more here

Eat yourself healthy

What exactly is the Glycemic Index? Find out here, and see why it’s a great meal-planning tool. Plus, effective ways to cut calories without missing out on good nutrition.

Why you should love fitness

How getting active will benefit your body, and what it means for your weight loss, too.

Looking for more?

Search for something more specific here or define a few of those hard-to-understand terms here