The weight loss landscape has shifted significantly with the rise of digital health platforms....
The New Math on Weight Loss: Goodbye 3,500-Calorie Rule
By: Scottsdale Weight Loss Center
Published: January 24, 2019
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For years doctors have been telling their patients to cut out 3500 calories and they will lose 1 pound of fat. By cutting 500 calories daily, one should lose a pound each week. The calculation came from simple thermodynamics: If one burns a pound of fat in a bomb calorimeter, it releases 3500 Kcals. So, it would stand to reason that our bodies are just a simple physics equation. When their patients did not lose weight, they surmised the patient was overeating. Studies have since proven the 3500 calorie per pound theory wrong, as challenged by the following article in NEJM.
So, the new math shows that one must create a calorie deficit of between 4500 and 7000 calories for each pound of fat. The reasons behind this include:
- Reduction of calories and weight loss leads to lower levels of the fat burning hormone leptin, resulting in a lower metabolism.
- Reducing calories often leads to decreased levels of physical activity.
- Creating a calorie deficit from increased activity often leads to compensatory increases in intake.
Nick
Nick's Story
"I wish I would have come here first. We spend all our time reacting to the next great weight loss tip or program. It might work for a while, but does not last and we end up yo-yoing from one fad to the next – as we gain more weight." Read More
Gina
Lost 44.5 lbs
"I had no trouble adhering to the meals and they really helped catapult my progress! The classes were so beneficial to me because they helped change my thinking about how I viewed health, nutrition, and fitness.
I will always have my relationship with Scottsdale Weight Loss Center. They truly helped me change my life forever." Read More
Lauren
Lost 60 lbs
"Dr. Ziltzer and everyone who I have come in contact with at the Scottsdale Weight Loss office have been so encouraging and I look forward to seeing them each week. It is now a year and 2 months later since I started. I am down 60 lbs., which is the average amount a 9-year-old weighs, it is crazy to think I lost a whole person! I feel amazing, I hit my goal weight in November 2021 just before Thanksgiving. Nothing on my body hurts anymore..." Read More
Chuck
Lost 66 lbs
"The best thing I did was call the Scottsdale Weight Loss Center. I have a lot more energy, I'm not hungry, and it feels great.
You can take it from me that this is a program that produces results. The staff is always positive, supportive, and never judgmental.
Your visits always result in positive reinforcement, no matter if you had a good week or a bad week." Read More
Emily
Lost 101 lbs
"Here I am at the lowest I have been since high school weighing in at 155lbs. I have lost 101 lbs, BMI of 39 when I started, to 21.6, and of course at body fat % of 47.1 to 26.5%. I told myself by my 30th birthday I wanted to be confident in the way I look and I owe it all to SWLC. The entire staff is so welcoming and they are rooting for you just as much as you are rooting for yourself...." Read More
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Meet Our Team
Robert Ziltzer, MD, FACP, FAAP, FOMA
Obesity Medicine Certified Physician
Diana Bone, FNP-C
Specializing in Obesity Medicine
Craig Primack, MD, FACP, FAAP, MFOMA
Obesity Medicine Certified Physician
Kristen Ash, FNP-C, FNP-BC
Nurse Practitioner
Alicia Earley, FNP-C
Family Nurse Practitioner
