What is the “bliss point,” and what does the evidence show about foods that are hard to stop eating?
The Short Answer
“Bliss point” is a popular name for the idea that food products are tuned to the level of pleasure that keeps you eating. That is a claim about industry practice rather than a measured finding. What has been measured is narrower and firmer: a definition of hyper-palatable food by its nutrients, met by 62% of the foods in a US food database,[1] and a feeding trial in which people ate about 508 more calories a day on ultra-processed food without rating it any more pleasant.[2]
Something to Sit With
In that trial, the extra calories came with no difference in how pleasant the meals were, or in how hungry or full people felt.[2]
Eating past enough does not have to feel like eating more.
Learn More
A definition with numbers. Fazzino and colleagues defined hyper-palatable food by three nutrient combinations, each with thresholds: fat with sodium (more than 25% of calories from fat, at least 0.30% sodium by weight), fat with sugar (more than 20% of calories from each), and carbohydrate with sodium (more than 40% of calories from carbohydrate, at least 0.20% sodium).[1] Of 7,757 foods in a US food database, 62% met at least one, and fat with sodium was by far the most common. The database lists foods; it is not weighted by what people buy.[1]
What it caught, and what it didn’t. The definition captured no fresh or raw fruits, meats, or fish. It did catch products sold as lighter: 80% of items labeled reduced-fat or reduced-calorie still qualified, though items carrying any “reduced” or “no” claim were only 5% of the hyper-palatable foods found. And hyper-palatable is not the same as calorie-dense: 49% of the qualifying foods had low energy density.[1]
The paper measured composition, not eating. Its authors offer, as background, that such combinations “may facilitate overconsumption despite satiety.”[1]
What happens when you eat it. In a controlled feeding trial, people ate about 508 more calories a day on an ultra-processed diet than on a matched unprocessed one, all of the excess from carbohydrate and fat. They reported no difference in how pleasant or familiar the meals were, and no significant difference in hunger, fullness, or satisfaction.[2] On the unprocessed diet, appetite-suppressing PYY rose and hunger-signaling ghrelin fell; on the ultra-processed diet, neither moved.[2]
Liking and filling. Across 38 foods tested at matched calories, the better-liked a food, the less it filled. That is a correlation across foods, not a mechanism shown.[2]
Why stopping is hard. In a brain-imaging study of 39 young women, higher food-addiction scores went with more activity in three brain regions as food was anticipated, and less in a fourth while eating, which the authors read as either weaker inhibitory control or a weaker sense of fullness during the meal. It measures the response, not its cause, and it does not show that any food was designed to produce it.[2]
What this means for you.
Difficulty stopping is not simple weakness. People in the trial ate hundreds of calories more without the food seeming any better.[2]
A lighter label doesn’t settle it. Most reduced-fat and reduced-calorie items still met the definition.[1]
Whole foods sit outside it. No fresh or raw fruit, meat, or fish qualified.[1] You can choose which of the foods that do qualify to keep within easy reach.
Further reading:
- Moss M, Salt Sugar Fat[3] (2013) — An investigative reporter’s account of food companies engineering products for maximum consumption
- Kessler DA, The End of Overeating[4] (2009) — On conditioned hypereating
- Guyenet SJ, The Hungry Brain[5] (2017) — Neuroscience of food reward
- Moss M, Hooked[6] (2021) — Updated reporting on food engineering
Written by AI, directed and approved by me. How this is made →