Intermittent Fasting “No Magic Bullet for Weight Loss”

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Intermittent Fasting

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New research study released today challenges a common belief that periodic fasting diet plans such as alternate day fasting or the ‘5:2’ are the most efficient methods to reduce weight.

Over current years, diet plans that see individuals quick on a couple of days weekly have actually increased in appeal, strengthened by pictures of individuals’s incredible weight improvements, and backed by celeb recommendations.

However, proof to date about the efficiency of fasting compared to more standard diet plans which intend to decrease calorie consumption throughout a complete week has actually been restricted.

Published in the prominent journal Science Translational Medicine, the brand-new research study from a group of physiologists at the University of Bath develops this proof and suggests that there is ‘nothing special’ about fasting.

Participants in their randomized control trial lost less weight when fasting in contrast with those following a conventional diet plan — even when their calorie consumption was the exact same general.

The trial, arranged by a group from the University’s Centre for Nutrition, Exercise & Metabolism (CNEM), saw individuals designated into among 3 groups:

  • Group 1 which fasted on alternate days with their quick day followed by a day of consuming 50% more than normal.
  • Group 2 which minimized calories throughout all meals every day by 25%.
  • Group 3 which fasted on alternate days (in the exact same method as Group 1) however followed their quick day with one day consuming 100% more than normal.

Participants throughout all 3 groups were taking in a normal diet plan of around 2000-2500 kcal daily typically at the start of the research study. Over the course of the three-week tracking duration, the 2 energy-restricted groups minimized this to be in between 1500-2000 kcal typically. Whereas groups 1 and 2 minimized their calorie consumption by the exact same quantity in various methods, group 3’s diet plan saw them quick without decreasing general calories.

Their results discovered that the non-fasting dieting group (Group 2) lost 1.9 kg in simply 3 weeks, and DEXA body scans exposed this weight-loss was nearly completely due to a decrease in body fat material.

By contrast, the very first fasting group (Group 1) who experienced the exact same minimized calorie consumption by fasting on alternate days and consuming 50% more on non-fasting days, lost nearly as much body weight (1.6 kg) however just half this weight-loss was from minimized body fat with the rest from muscle mass.

Group 3, who fasted however increased their energy consumption by 100% on non-fasting days, did not require to make use of their body’s fat shops for energy and for that reason weight-loss was minimal.

Professor James Betts, Director of the Centre for Nutrition, Exercise & Metabolism at the University of Bath who led the research study discusses: “Many individuals think that diet plans based upon fasting are specifically efficient for weight-loss or that these diet plans have specific metabolic health advantages even if you don’t reduce weight.

“But periodic fasting is no magic bullet and the findings of our experiment recommend that there is absolutely nothing unique about fasting when compared to more standard, basic diet plans individuals may follow.

“Most significantly, if you are following a fasting diet it is worth thinking about whether prolonged fasting periods is actually making it harder to maintain muscle mass and physical activity levels, which are known to be very important factors for long-term health.”

These results concentrated on individuals who were specified as ‘lean’ (i.e. body mass index 20-25 kg/m2). 36 individuals took part in the research study which was performed in between 2018 – 2020 and moneyed by the University of Bath.

Reference: “A randomized controlled trial to isolate the effects of fasting and energy restriction on weight loss and metabolic health in lean adults” 16 June 2021, Science Translational Medicine.
DOI: 10.1126/scitranslmed.abd8034



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