Here are top 15 most popular diet and weight loss websites.

Weightwatchers

weightwatchers.com

Cronometer

cronometer.com

Eatthis

eatthis.com

Loseit

loseit.com

Fatsecret

fatsecret.com

Fooducate

fooducate.com

Noom

noom.com

Optavia

optavia.com

Yourketo

yourketo.diet

Sparkpeople

sparkpeople.com

Drfuhrman

drfuhrman.com

Calorieking

calorieking.com

Jennycraig

jennycraig.com

Myfooddiary

myfooddiary.com

Zonediet

zonediet.com