How to Stop Feeling Hungry on a Diet

1. Eat more protein

Protein has the best evidence of any macronutrient for keeping hunger down.

• In a 2005 study by Weigle and colleagues (American Journal of Clinical Nutrition), 19 people raised protein from 15% to 30% of their calories, with carbohydrate unchanged. Free to eat as much as they liked, they ate about 440 calories a day less without trying and lost about 4.9 kg (11 lb) over 12 weeks, about 3.7 kg (8 lb) of it fat.
• In a 2011 study by Leidy and colleagues (Obesity), 27 overweight and obese men on a 12-week diet felt fuller through the day on higher protein (25% of calories rather than 14%).

A 2018 meta-analysis by Morton and colleagues found that the benefit of protein for muscle levels off at around 1.6 g per kg of body weight a day, with 2.2 g/kg covering most people. On a diet, aim toward the top of that range, spread over your meals: the International Society of Sports Nutrition suggests 20 to 40 g per meal. For the details and food sources, see how much protein you need, or use the free protein calculator.

2. Eat more food for the same calories

Foods with lots of water and fibre (vegetables, fruit, potatoes, soups) give you more to eat for fewer calories. Researchers call this low "energy density", and much of the research comes from Barbara Rolls's group at Penn State:

• Soup before a meal: in a 2007 study by Flood and Rolls, a low-calorie soup before lunch cut the calories eaten at that lunch, soup included, by about 20%.
• Over a year: in a 2007 trial by Ello-Martin and colleagues, women with obesity were taught to cut fat from their diets, and half were also taught to eat more water-rich foods such as fruit and vegetables. Among the 71 who finished, that group ate a greater weight of food, reported less hunger, and lost about 7.9 kg (17.4 lb) in the year, against 6.4 kg (14.1 lb).
• Some foods fill you far more than others: in the 1995 "satiety index" study by Holt and colleagues, people ate 240-calorie servings of 38 foods. Boiled potatoes kept them fullest, at about three times white bread; croissants came last. Water, fibre and protein made a food more filling; fat made it less.

In practice:

• Fill half your plate with vegetables or salad at lunch and dinner.
• Use potatoes, rice, oats and beans as your main carbohydrates more often than pastries, crisps and biscuits.
• Have fruit instead of juice, and a broth-based soup when you want something hot.
• Measure oils, butter and dressings. They add a lot of calories and almost no volume.

3. Get enough fibre

The NHS says adults should aim for 30 g of fibre a day, while most eat only about 20 g. Fibre was one of the things that made foods more filling in Holt's satiety index, and fibre-rich foods are usually low in energy density too.

Good sources are oats, beans, lentils, wholegrain bread and pasta, potatoes with their skins, vegetables, fruit, nuts and seeds. Add fibre gradually, or you may swap hunger for bloating.

4. Go easy on ultra-processed food

In a 2019 study by Hall and colleagues at the US National Institutes of Health, 20 adults lived on a research ward for a month and ate two diets for about two weeks each, eating as much as they wanted. On the ultra-processed diet they ate about 500 calories a day more and gained about 0.9 kg (2 lb). On the minimally processed diet they lost about the same. The meals offered were matched for calories, sugar, fat and fibre, and people ate faster on the ultra-processed food.

You do not need to ban treats. But build most meals from simple foods: meat, fish, eggs, dairy, potatoes, rice, oats, fruit and vegetables.

5. Protect your sleep

Short sleep turns up appetite.

• In a 2004 study by Spiegel and colleagues (Annals of Internal Medicine), 12 young men spent two nights with only 4 hours in bed. Leptin, a hormone that signals fullness, fell by 18%, ghrelin, which drives hunger, rose by 28%, and hunger rose by 24%, with the biggest jump in cravings for sweets, salty snacks and starchy foods.
• A 2017 meta-analysis by Al Khatib and colleagues (European Journal of Clinical Nutrition) pooled 11 studies with 172 people. After partial sleep loss, people ate about 385 calories a day more, with no change in the energy they burned.

The American Academy of Sleep Medicine recommends at least 7 hours a night for adults. If your hunger is worst after a bad night, that is not a coincidence. See sleep and muscle growth for how to improve it.

6. Pick the meal pattern that keeps you full

There is no magic meal timing for fat loss.

• Small, frequent meals did not help. In the Leidy study above, splitting the same food into six small meals rather than three did not change daily hunger or fullness. On higher protein, three meals actually kept the men fuller in the evening.
• Time-restricted eating was not better. In a 2022 trial by Liu and colleagues (New England Journal of Medicine), 139 adults with obesity ate the same calorie targets, either at any time or only between 8am and 4pm. After a year, they had lost about 8.0 kg (17.6 lb) with the eating window and 6.3 kg (13.9 lb) without, a difference that was not statistically significant.

So choose the pattern that suits your day. If evenings are your weak spot, save a bigger meal for later. If you are not hungry in the morning, you do not have to force breakfast. Helms and colleagues (2014) suggest 3 to 6 meals a day, each with at least 20 g of protein, and expect little difference within that range.

One cheap habit with a little evidence behind it: in a 2010 study by Dennis and colleagues, 48 adults aged 55 to 75 who drank 500 ml of water before each meal lost about 2 kg (4.4 lb) more over 12 weeks than those who did not. It was one small study in older adults, but it costs nothing to try.

7. Keep the deficit moderate

The bigger the deficit, the louder the hunger. Helms and colleagues recommend losing about 0.5 to 1% of your body weight a week to hold on to muscle; the NHS suggests 0.5 to 1 kg (1 to 2 lb) a week for weight loss in general. Go faster and you pay with hunger, worse training and, as their review notes, a bigger share of the weight lost coming from muscle.

On a long diet, a week or two at maintenance can help. In the ICECAP trial (Peos and colleagues, 2021), lifters who took a 1-week break after every 3 weeks of dieting reported less hunger than those who dieted straight through, with similar fat loss. See diet breaks and refeeds.

When hunger means the diet is too aggressive

In the Minnesota Starvation Experiment of 1944 and 1945, 36 men ate about 1,570 calories a day for six months, aiming to lose a quarter of their body weight. They became preoccupied with food, dreaming and talking about it, and grew tired, irritable and low. A sensible diet is nothing like that, but the early warning signs look similar.

Your diet is probably too aggressive if:

• you are losing more than about 1% of your body weight a week, week after week;
• you are hungry most of the day even with protein, vegetables and sleep sorted;
• you think about food constantly, or feel you are losing control around it;
• your training, sleep or mood are sliding;
• your periods become irregular or stop.

The fix is usually to eat a little more and lose a little slower, not to grit your teeth. If your periods have changed, you often feel out of control around food, or you have a history of an eating disorder, speak to your doctor before dieting further. In the UK, the charity Beat also offers support.

How coaching helps with hunger

Hunger is easier to fix when someone sees the whole picture. With one-to-one coaching from CoachAk, your calorie, macro and step targets live in a private app, and your weekly check-in covers your weight, training and nutrition adherence, steps, sleep, energy, hunger and stress. Your coach replies with written feedback explaining what changes next week and why: more protein, a different meal split, a slower rate of loss or a short break at maintenance. Between check-ins, you can message your coach directly.

If you want a diet you can actually stick to, apply for coaching.