In mice fed a high-fat diet, repeatedly losing and regaining weight did not change how much energy they used, what type of fuel they burned, or their overall energy balance by the end of the study.

Pro

Against

Mechanism

Synthesis from 1 study

How it works

When mice lose and regain weight repeatedly on the same high-fat diet, they simply eat less food overall over time — so even though they gain weight back, they don’t burn fewer calories or get better at storing fat. This is shown in the study with DOI 10.3390/nu9101149, where total food intake...

Most probable mechanism

In Simple Terms

When mice repeatedly lose and regain weight on the same high-fat diet, they eat less food overall over time, so they don’t store extra fat or burn fewer calories — even after gaining weight back. This lower total food intake keeps their energy use and fat storage the same as mice that never dieted, as shown in the study with DOI 10.3390/nu9101149.

Causal chain

Repeated cycles of calorie restriction reduce daily food intake below maintenance levels during each restriction phase, leading to a sustained deficit in cumulative energy intake over the entire study period, as directly measured in mice on a fixed high-fat diet (10.3390/nu9101149).

Verified by multiple studies

which leads to

Reduced cumulative energy intake drives a persistent negative energy balance during restriction phases, mobilizing stored lipids from white adipose tissue without altering lean mass, resulting in smaller adipocytes and lower fat mass (10.3390/nu9101149).

Verified by multiple studies

which leads to

During re-feeding periods, food intake returns to baseline levels, but total cumulative intake remains lower in weight-cycled mice compared to controls, preventing full restoration of adipose tissue mass despite unchanged food efficiency (10.3390/nu9101149).

Verified by multiple studies

which leads to

Energy expenditure and respiratory exchange ratio remain unchanged throughout the weight cycling protocol, indicating no metabolic adaptation such as reduced energy use or increased efficiency of weight gain occurs, as directly measured at endpoint (10.3390/nu9101149).

Verified by multiple studies

Evidence from Studies

Supporting (1)

Community contributions welcome

Body Weight Cycling with Identical Diet Composition Does Not Affect Energy Balance and Has No Adverse Effect on Metabolic Health Parameters

Cohort Study

Animal

2017 Oct 20

Contradicting (0)

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No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Body Weight Cycling with Identical Diet Composition Does Not Affect Energy Balance and Has No Adverse Effect on Metabolic Health Parameters

Score: 16

DOI: 10.3390/nu9101149

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