Hunger after weight loss: why willpower is an incomplete explanation

The person has to live with the target

A dietary prescription can look manageable on paper while requiring persistent resistance to hunger. Understanding that demand matters whether someone wants to change body mass, support training or recover a steadier relationship with food.

From Consistent Eating

Billy Craig, Consistent Eating — Does an energy deficit increase compensatory effects?.

There is a danger of stopping one question too early. If adherence predicts the result, we might conclude that the answer is simply to adhere. But that returns the problem to the person without examining its conditions. What made the approach manageable? What made it difficult? Was hunger recorded? Did the plan fit the person's work and household? Was the desired result compatible with the life they wanted to lead?

The follow-up that matters

Sumithran and colleagues enrolled 50 adults with overweight or obesity in a ten-week very-low-energy weight-loss programme. Thirty-four completed the study. Increased subjective appetite and changes in several appetite-related hormones persisted at follow-up a year after initial weight loss. [1]

This shows a persistent biological component to hunger in that setting. It does not establish the response to every smaller dietary adjustment, and the completers cannot stand for everyone initially enrolled. Neither does it mean that weight regain is inevitable. [1]

What an adherence figure leaves out

Two people can meet the same dietary target while having very different experiences. One may find the pattern straightforward. The other may spend much of the day thinking about food, avoiding social occasions or compensating after meals. A record of compliance alone misses that difference.

A useful review would ask when hunger occurs, whether meals are accessible and how much mental effort the routine requires. Those questions can reveal practical problems without presuming that every sensation needs a hormonal explanation. They also allow a person to report difficulty without being treated as an unreliable participant.

The EPK research question

Energy per Kilogram offers a way to express fuelling in relation to body mass, but a ratio does not measure comfort or sustainability. EPK research should ask whether its proposed approach reduces persistent hunger and food preoccupation while supporting function.

That requires a comparison and follow-up, including people who discontinue the approach. The book’s argument is to take the burden of adherence seriously. The study supports investigating that burden; it does not establish a universal minimum kcal/kg or prove the effectiveness of the app.

Behaviour and the conditions for consistency

• Why stress changes the habits we fall back on
• When food tracking helps—and when it becomes another demand
• Why exercise can feel harder after a mentally demanding day
• Having the skill: why pressure can change access to ability
• Autism, communication and the social setting
• Recovery can mean learning safety, not erasing the past
• Does calorie restriction always worsen wellbeing? The CALERIE counterpoint

Related working papers

Read the relevant PDFs: EPK–001 to 007 are the revised version 1.2 papers; EPK–008 to 010 are version 1.0 supplements. Earlier PDFs and DOI records remain on the paper archive.