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Reasons for Not Losing Weight: Why the Scale May Be Stuck

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Woman standing on a weighing scale with icons for sleep, stress, hormones, activity and nutrition, illustrating common reasons for not losing weight.
The short answer

Weight loss can slow or stall even when you are making positive changes. Common reasons include an unrealistic timeline, eating more energy than you realise, reduced everyday movement, a normal weight-loss plateau, poor sleep or high stress, and medicines or health conditions that affect weight. The best next step is usually to review your habits and progress over several weeks - not to respond with an extreme diet.

If the number on the scale has stopped moving, it does not automatically mean your efforts are ineffective. Body weight naturally fluctuates from day to day, and as you lose weight your body needs less energy than it did at a higher weight. A plateau is common and often means your plan needs a practical review rather than a complete restart.

What causes a weight-loss plateau [1]

It is common to lose weight quickly during the first few weeks, partly because the body uses up stored glycogen and the water within them.

As you continue losing weight, some muscle may also be lost along with body fat, which can cause your body to burn fewer calories. Eating enough protein and staying active, including activities that strengthen your muscles, can help maintain muscle while losing weight.

Over time, weight loss may naturally slow down and reach a plateau when your body is burning about the same number of calories as you consume. At this stage, small changes to your eating habits or physical activity may be needed to continue making progress.

How to overcome weight-loss plateau

1. You may be eating more calories than you realise [2]

Weight loss generally requires a sustained energy deficit, but intake is easy to underestimate. Try tracking your food and drink intake for a few days to see if any hidden calories have snuck back in. Portion sizes, cooking oils, sauces, snacks, alcohol, sweetened drinks and “healthy” foods can add more energy than expected. If you find that you've been taking in more calories than recommended in your nutrition plan, you can adjust your food intake to get back on track.

Try this: For one or two typical weeks, record food and drinks without trying to be perfect. Look for repeat patterns rather than obsessing over a single day. If you have not changed your nutritional plan but you're still not meeting your weight loss goals, you may seek help from dietary experts to refine your nutritional plan in a healthy way, without risking making changes that are drastic. Remember to incorporate different healthy foods to create a variety and meet your daily nutritional needs.

2. Your meal pattern may be making hunger harder to manage [1, 3]

Skipping a meal is not automatically a solution to lose weight. What matters more is the overall eating pattern and whether it helps you manage hunger and energy intake.

When you skip a meal, you may compensate by eating a larger portion and having greater energy intake at subsequent meals. If your weight-loss plan is about reducing your overall calorie intake per day, a calorie intake of less than 1,200 calories a day will not be enough to keep you from constant hunger, which increases your risk of overeating.

Try this: Choose a meal pattern that is nutritionally balanced, practical and sustainable. If you become very hungry after long gaps, consider planning a protein- and fibre-containing meal or snack before that point.

3. Distracted eating can make portions harder to notice [4]

Eating while scrolling, working or watching television can make it easier to lose track of portions or continue eating after you are comfortably full. Mindful eating is not a weight-loss technique, but slowing down and paying attention can improve awareness of hunger, fullness and portion size.

Try this: When possible, sit down for meals, reduce screen distractions and pause halfway through to check whether you are still hungry.

4. Your body may have reached a normal weight-loss plateau [1, 5, 6]

A weight-loss plateau is common. Early weight loss can be faster because changes in glycogen and body water contribute to the drop. As you lose weight, you will lose some muscle together with fat, which can further reduce energy needs.

Try this: Reassess your current portions and activity rather than repeating the exact plan that worked at a higher weight. Strength or resistance exercise can help preserve muscle, while regular movement supports overall energy expenditure.

5. You may be exercising - but moving less during the rest of the day [6, 7]

A workout is valuable for health, but it is only one part of daily movement. Some people become less active outside planned exercise, especially when tired, busy or working at a desk. That can reduce the total amount of energy used across the day. Regular physical activity remains an important part of healthy weight management.

Try this: Keep your planned exercise, but also look for ordinary movement: walking during breaks, taking stairs, standing more often, doing household tasks or adding short walks after meals if suitable for you.

6. Sleep and stress may be working against your routine [8, 9]

Healthy weight management is not only about food and exercise. Adequate sleep and stress management as part of a healthy weight-loss approach. Long-term stress may manage hunger and eating behaviour while poor sleep can also make it harder to maintain routines, alter appetite and stay active.

Try this: Aim for a consistent sleep schedule, create a wind-down routine and identify one realistic stress-management strategy you can repeat, such as a short walk, breathing practice or talking with someone you trust.

7. Medicines or a health condition may affect your weight

Some medicines and medical conditions may cause weight gain or make weight loss more difficult. Speak to your healthcare professional about your plans to lose weight and discuss the possible strategies that you can try to lose weight. Do not stop a prescribed medicine on your own.

Try this: If you suspect your medicine is affecting your weight, speak with your healthcare professional to do a medication review or suggest suitable weight-loss strategies to complement your current treatment plan.

When should you speak to a healthcare professional?

If you are unsure what a healthy target is for you, have a medical condition, take medicines that may affect weight, or have tried consistent lifestyle changes without the expected result, speak to your healthcare professional to help you find ways to lose weight safely.

Speak with a CARiNG pharmacist

Visit your nearest CARiNG pharmacy to know more about weight management, healthy lifestyle planning, and when to seek further medical assessment.

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Medical disclaimer: This article is for general health education and is not a substitute for medical advice, diagnosis or treatment. If you are pregnant, have a medical condition, take regular medicines, have a history of an eating disorder or are considering weight-loss supplements or medicines, speak with a qualified healthcare professional.

Frequently asked questions about reasons for not losing weight

Why am I not losing weight even though I am eating less?

There is a possibility that your calorie deficit may be smaller than expected as your food portions or drinks may be underestimated. As you lose weight, your metabolism declines and subsequently causes you to burn fewer calories than you did at your heavier weight. To combat this, you may try to increase your physical activity or decrease the calories you eat as part of the strategy to lose weight further. However, it is important that you do not decrease your calories to fewer than 1,200 calories a day as it may not be enough to keep you from constant hunger. This extreme decrease in calories also increases your risk of overeating. [1, 2]

Why am I not losing weight despite exercising?

Exercise supports health and weight management, but weight change also depends on food intake, everyday movement, sleep, stress, and health conditions and treatment. [1, 6, 7, 8, 9]

How long can a weight-loss plateau last?

There is no fixed duration. A plateau happens because the body has adapted to your current change diet and exercise plan and now it's working to maintain that status quo. If there is no downward trend for your weight for several weeks, review your current routine and consider seeking professional guidance. [2]

Can lack of sleep stop weight loss?

Poor sleep does not make weight loss impossible, but it can make appetite, energy, activity and adherence harder to manage. Adequate sleep is part of a healthy weight-management routine. [8]

Can stress cause weight gain or make weight loss harder?

Long-term stress can affect appetite and eating behaviour, and it may make healthy routines harder to maintain. Stress management is one part of a broader weight-management plan. [9]

Should I skip meals to lose weight faster?

Skipping meals is not required for weight loss. The best meal pattern is one that provides adequate nutrition, fits your health needs and helps you manage hunger and total intake sustainably. [1, 2]

When should I see a doctor about the difficulty of losing weight?

If you are unsure what a healthy target is for you, have a medical condition, take medicines that may affect weight, or have tried consistent lifestyle changes without the expected result, speak to your healthcare professional to help you find ways to lose weight safely.

View references 9 sources
  1. Mayo Clinic Staff. Getting past a weight-loss plateau. Rochester (MN): Mayo Clinic; 9 April 2024. Cited 23 September 2026. Source
  2. Armstrong K. How to get through weight loss plateaus and regain. Providence (RI): Brown University Health; 11 January 2024. Cited 23 September 2026. Source
  3. Zeballos E, Todd JE. The effects of skipping a meal on daily energy intake and diet quality. Public Health Nutr. 2020;23(18):3346–3355. Source
  4. Harvard T.H. Chan School of Public Health. Mindful eating. Boston (MA): Harvard University; September 2020. Cited 23 September 2026. Source
  5. Mayo Clinic Staff. Strength training: get stronger, leaner, healthier. Rochester (MN): Mayo Clinic; 2026. Cited 23 September 2026. Source
  6. Centers for Disease Control and Prevention. Benefits of physical activity. Atlanta (GA): Centers for Disease Control and Prevention. Cited 23 September 2026. Source
  7. Centers for Disease Control and Prevention. Steps for getting started with physical activity. Atlanta (GA): Centers for Disease Control and Prevention; 4 December 2025. Cited 23 September 2026. Source
  8. Papatriantafyllou E, Efthymiou D, Zoumbaneas E, Popescu CA, Vassilopoulou E. Sleep deprivation: effects on weight loss and weight loss maintenance. Nutrients. 2022;14(8):1549. Source
  9. Goens D, Virzi NE, Jung SE, Rutledge T, Zarrinpar A. Obesity, chronic stress, and stress reduction. Gastroenterol Clin North Am. 2023;52(2):347–362. Source

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