Why isn't my weight going down, even though I eat less?

The scales have shown the same number all week, and you're doing everything “right”. Usually it isn't your metabolism, and the scales aren't broken either. Here are eight real reasons, most common first.

Information checked on 2026-09-28. General information, not medical advice. How we calculate

In short: your weight can move 1–2 kg in a day from water alone. So don't make decisions based on one morning – look at the 3–4 week trend and your waist.

1. It isn't a plateau yet, it's water

Body weight changes through the day with water, salt, what's in your gut, where you are in your cycle and how many carbohydrates you ate. One saltier dinner can “add” a kilogram that disappears two days later. Actual body fat does not change that fast.

So the day doesn't matter, the trend does. In practice: weigh yourself in the same conditions (morning, after the toilet, undressed) and compare weekly averages, not single mornings.

2. You're eating more than it seems

Most missing deficits hide in a few quiet places:

  • Oil and butter. A tablespoon of oil is about 90 kcal. There are often two in the pan.
  • Drinks. Coffee with syrup, juice, beer – no fullness, plenty of calories.
  • Tastes while cooking. A spoon here, a piece of cheese there. It adds up.
  • Sauces, spreads, seeds and nuts. Small grams, high density.

You don't have to count for life – 3–5 honest days are enough to see where the deficit goes. How to do it without obsessing: how to count calories.

3. Weekends average out the week

A classic: a 500 kcal deficit Monday to Friday, then 1,200 kcal extra on both Saturday and Sunday. The weekly total is zero. That's why it helps to count the deficit per week, not per day: five tidy days and two slightly looser ones work, while five very strict days and two completely free ones don't.

4. The deficit isn't a deficit any more

Once you've lost a few kilograms, your daily need drops a little – a lighter body is cheaper to carry. The numbers that worked 8 kg ago may now be your maintenance level. Recalculate your need for your current weight in the calorie calculator.

5. You're moving less without noticing

When you eat less, your body saves energy quietly: you fidget less, sit more and walk a bit slower. That can eat a good chunk of your deficit, and on the scales it looks like a plateau. The simplest answer isn't less food, it's more steps: a walk after a meal, the stairs, one bus stop on foot.

6. Not enough time has passed

0.35 kg a week is a normal pace, but scale error and water can easily hide a change that small for two weeks. Give it at least 3–4 weeks before you change the plan. Why slower is actually better: a separate guide.

7. Sleep and stress

Short sleep and long stress both increase hunger and the pull towards sweet things, while reducing the urge to move. This isn't willpower, it's physiology. After a week with no sleep, a stalled weight is no surprise.

8. A health condition or medicines

An underactive thyroid, polycystic ovary syndrome and some medicines (certain antidepressants, hormones, steroids) really can change your weight and appetite. If new symptoms have appeared too – tiredness, hair loss, feeling cold, irregular periods – don't guess, get it checked.

Before you change how you eat to lose weight, talk to your doctor first if:

  • you are pregnant or breastfeeding;
  • you have diabetes or take medicines that affect your blood sugar;
  • you have kidney disease, heart disease or another long-term condition;
  • you are under 18;
  • you have or have had an eating disorder;
  • you are losing weight without trying.

If your relationship with food worries you, you can talk to a doctor or a psychologist. If you're struggling right now, call your local emergency number or find a free helpline at findahelpline.com.

Or maybe your weight is stuck but your body is changing

If you've started moving or lifting again, muscle can grow slightly at the same time as fat goes down. The scales then show the same number while your clothes fit differently. So measure more than weight:

  • waist circumference – every 2 weeks, in the morning, without pulling it in;
  • how a particular pair of trousers fits;
  • how much you can lift, or how far you walk without getting tired.

What to change, and what not to

Do these first:

  1. Write down everything honestly for 3–5 days, including oil and drinks.
  2. Recalculate your daily need for your current weight.
  3. Add protein to breakfast – the rest of the day gets easier.
  4. Add 2,000–3,000 steps a day.
  5. Wait 3 weeks, then judge.

What not to do: don't drop calories below your basal metabolic rate, don't skip meals and don't start a “detox” week. Those give you a fast change in water weight, hunger and usually a rebound. The safe limits Dumpli never crosses are on our methodology page.

When it's simply normal

Weight loss is not a straight line. There are weeks when nothing moves, and then 1 kg disappears in a few days as water settles. That isn't your fault, and it isn't a sign that your body is broken. A plateau lasting 3–4 weeks is an ordinary part of any longer process.

Don't want to guess? The nutrition quiz works out your daily need and a safe deficit, and the app shows a filling day of meals made from real recipes. Free, no card. Take the nutrition quiz → · Calorie calculator

Frequently asked questions

How long can weight stay the same?

A few days, or even two weeks, with no change is normal: water hides it. If nothing changes for more than 3–4 weeks and your waist is the same, then it's worth reviewing your portions and your daily need.

Why isn't my weight going down even though I eat very little?

The most common reason is eating more than it seems: uncounted oil, drinks, tastes while cooking, bigger weekends. The second is too big a deficit on weekdays, followed by eating more at the weekend – so the weekly average has no deficit at all.

Should I cut calories even further?

Almost never. First check that you're really eating what you planned, and that the deficit is calculated from your current weight. There's no need to go below your basal metabolic rate (or below 1,200 kcal for women and 1,500 kcal for men).

Why did my weight go up after a workout?

After an unfamiliar workout your muscles hold more water and glycogen, so your weight can be higher for a few days. That isn't fat.

When does a stall mean a health problem?

If it comes with heavy tiredness, feeling cold, hair loss, very irregular periods or other new symptoms, get checked by a doctor (thyroid function, for example). A stall on its own doesn't mean anything is wrong.

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