What have Tayla and 800,000 others discovered?
How to play
Choose a game
Find a game that fits your weight-loss goals, timing, and bet.
Bet on yourself
Place your bet, weigh in with our Refs, and feel the motivation kick in.
Lose the weight
Get help from the game’s host and other players as you stay focused.
Winners get back their bet plus a profit. It pays to bet on yourself!
Swipe to learn more →
Partner hall of fame
Lost 312lbs as a DietBet player, now a 26-time host with 182,234 players.
Bestselling author and creator of 21 Day Fix, helped dietbetters lose over 300,000 pounds.
Stars of ABC’s Extreme Weight Loss, hosted 17 dietbets with 99,640 players.
Chris & Heidi Powell
It's not dieting. It's not betting.
DietBet is behavioral science in a game.
Loss aversion. Gamification. Accountability.
The best part: it works. Launched in 2013 as an experiment backed by research from Wharton and Brown Medical School, DietBet has helped over 800,000 people lose 10 million pounds and win over $60 million.
But it's more than just a game with money on the line. Ask a Dietbetter what makes this experience so powerfully effective, and the first thing they'll tell you is the community — how supportive it is, how helpful it is to make the journey with people who get you. It's a whole new approach to sustainable behavior change.
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“love this game!!”
– Hannah Newar