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Lose It Forever: The 6 Habits of Successful Weight Losers from the National Weight Control Registry (Weight Loss Diet Self-help)

Lose It Forever: The 6 Habits of Successful Weight Losers from the National Weight Control Registry (Weight Loss Diet Self-help)

by Jason R Karp, ,

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Lose Weight and Keep It Lost

“A must-read primer for anyone who has worked hard to lose weight and wants to keep it off.”—Tamilee Webb, MA, star of Buns of Steel

How to maintain weight. Don't rely on your neighbor's latest gym stories or diet fad. Lose It Forever is a cutting-edge self-help book based on data from the National Weight Control Registry. Inside, you’ll learn what’s worked for the thousands of others trying to lose weight fast—and keep it there.

Proven how to maintain weight strategies. Despite the overflowing bookshelves of dieting tips and health books, the U.S. remains the most overweight country in the world. Most people who work towards successful fat loss just gain weight back a few weeks later. And frankly, many of us are just always hungry or overeating. So, what’s unique about those who succeed? The answer is buried deep in the archives at the Weight Control and Diabetes Research Center, home to the largest study of successful long-term weight loss maintenance.

Learn how to make the life changes you need. The National Weight Control Registry includes data from more than ten-thousand individuals about their weight, nutrition and fitness habits, and weight management strategies. This is where Jason Karp comes in—a nationally-certified coach, medical doctor devoted to healthy living, and the founder of the REVO₂LUTION RUNNING™ certification program. In his unique self-help book, he boils data down into actionable tips and wellness strategies for your everyday life.

Inside, you’ll learn that not all carbs are bad, eating can increase energy, and maintainable ways to:

  • Monitor your fats, carbohydrates, and protein
  • Exercise (a lot!) daily
  • Control your calorie intake with diets that work


If you enjoy nutrition books, healthy eating books, or fitness books—like Mini Habits for Weight Loss, Why We Get Fat, or Good Calories, Bad Calories—then you’ll love Lose It Forever.

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  • Jason R Karp

    The passion Jason Karp found as a kid for the science of athletic performance started with a race around the track in sixth grade in Marlboro, New Jersey. Little did Jason know how much it would define his career and life. A Brooklyn, New York native, he grew up playing baseball and soccer and running track. It was intoxicating. His passion and curiosity placed him on a path that he still follows as a coach, exercise physiologist, author, speaker, and creator of the popular REVO₂LUTION RUNNING coaching certification program, which was acquired by International Sports Sciences Association in 2022.

    Jason has given hundreds of international lectures and has been a featured speaker at the world’s top fitness conferences and coaching clinics. He has also given a TEDx talk, How Running Like an Animal Makes Us Human. He has been an instructor for USA Track & Field’s Level 3 coaching certification and for coaching camps at the U.S. Olympic Training Center.

    At age 24, Jason became one of the youngest college head coaches in the country, leading the Georgian Court University women’s cross-country team to the regional championship and being named NAIA Northeast Region Coach of the Year. While coaching high school track and field and cross country, he produced state qualifiers and All-Americans. He currently coaches a wide variety of runners online. In 2021, he became the first American distance running coach to move to Kenya to establish and coach a group of Kenyan runners.

    A prolific writer, Jason is the author of 15 books: Coaching the Kenyans, The Endurance of Speed, Run Like a Woman, Work Out, Running Periodization, The Inner Runner, Running a Marathon For Dummies, Run Your Fat Off, Lose it Forever, Sexercise, 14-Minute Metabolic Workouts, Running for Women, 101 Winning Racing Strategies for Runners, 101 Developmental Concepts & Workouts for Cross Country Runners, and How to Survive Your PhD. He is also editor of the sixth edition of Track & Field Omnibook. He has more than 400 articles published in numerous international coaching, running, and fitness trade and consumer magazines and served as senior editor for Active Network.

    Jason is a USA Track & Field certified coach, has been sponsored by PowerBar and Brooks, and was a member of the silver-medal winning United States Masters Team at the 2013 World Maccabiah Games in Israel.

    Jason was awarded the 2011 IDEA Personal Trainer of the Year (the fitness industry’s highest award), is a two-time recipient of the President’s Council on Sports, Fitness, & Nutrition Community Leadership Award (2014, 2019), and was a 2019 finalist for Personal Fitness Professional Trainer of the Year and 2020 finalist for Association of Fitness Studios Influencer of the Year.

    Jason received his PhD in exercise physiology with a physiology minor from Indiana University, his MBA in entrepreneurship from San Diego State University, his master’s degree in kinesiology from the University of Calgary, and his bachelor’s degree in exercise and sport science with an English minor from Penn State University. His research has been published in several scientific journals, and he serves as a journal expert peer reviewer.

    Connect with Jason on social media @drjasonkarp