Losing weight safely requires a combination of balanced nutrition, regular physical activity, adequate sleep and habits that can be maintained over time. Research does not support the idea that one diet or exercise routine works for everyone, and approaches that promise rapid results may be difficult to sustain.
The US Centers for Disease Control and Prevention (CDC) identifies healthy eating, physical activity, sleep and stress management as important components of weight management. Age, medication, medical conditions, genetics and other factors can also influence a person’s weight.
1. Make physical activity part of your routine
Regular physical activity supports cardiovascular health, strengthens muscles and bones, improves sleep and helps regulate blood sugar. It can also contribute to weight management.
The amount of activity needed varies by age, health and ability. For adults, the CDC recommends at least 150 minutes of moderate-intensity aerobic activity each week, alongside muscle-strengthening exercises on at least two days.
Walking, cycling, swimming, dancing and other activities can help people remain active. Exercise does not have to take place in a gym, and 30 minutes of cardio every day is not a universal requirement for weight management.
Physical activity also provides health benefits independently of changes in body weight.
2. Choose a balanced and sustainable eating pattern
A healthy eating pattern should provide the nutrients the body needs while reflecting individual preferences, cultural practices, health requirements and access to food.
Vegetables, fruits, whole grains, protein-rich foods and sources of healthy fats can form part of a balanced diet. Portion sizes and overall food intake also matter, but nutritional needs differ between individuals.
There is no single diet that works best for everyone. A plan that requires expensive products, eliminates large groups of foods or is difficult to maintain may not be suitable in the long term.
The US National Institute of Diabetes and Digestive and Kidney Diseases recommends choosing a programme that includes a suitable eating plan, physical activity, ongoing support and strategies for maintaining healthy habits.
3. Understand intermittent fasting
Intermittent fasting involves alternating periods of eating with periods of fasting. Different approaches use different eating schedules, and their effects can vary between individuals.
Some people find that setting eating times helps them organise meals and reduce unplanned snacking. However, fasting is not necessary for good health, and evidence does not establish it as the best approach for everyone.
Restricting food for long periods can cause fatigue, dizziness or difficulty concentrating in some people. It may also be unsuitable for people with certain medical conditions or medication requirements.
Adolescents, whose bodies are still developing, should not undertake restrictive fasting regimes for weight control without appropriate medical guidance.
4. Assess restrictive diets, including the ketogenic diet
The ketogenic diet, commonly called keto, sharply reduces carbohydrate intake and increases the proportion of calories obtained from fat. This can cause the body to enter ketosis, a metabolic state in which it uses ketones produced from fat as an alternative energy source.
Some adults lose weight while following a ketogenic diet. However, ketosis does not guarantee weight loss, and the diet is not automatically healthier or more effective than other eating patterns.
Restricting carbohydrates can also make it harder to obtain sufficient fibre and certain nutrients if food choices are limited. The diet may not be appropriate for people with particular medical conditions.
A balanced eating pattern that provides adequate nutrition and can be maintained over time is generally a more practical starting point than adopting a highly restrictive diet without professional advice.
5. Be cautious about weight-loss supplements
Products marketed as fat burners, appetite suppressants and rapid weight-loss supplements often promise results that are not supported by strong evidence.
The US National Center for Complementary and Integrative Health says most supplements marketed for rapid weight loss have not been shown to produce lasting results, and some can cause harmful side effects.
Meal-replacement products may help some adults manage their food intake in structured weight-management programmes, but they are not a universal solution and should not automatically replace a balanced diet.
People considering supplements should discuss them with a qualified healthcare professional, particularly if they take medication or have an underlying medical condition. Products advertised as natural are not necessarily safe.
6. Manage stress and pay attention to eating habits
Stress can influence sleep, appetite and food choices. Some people eat more when stressed, while others lose their appetite.
Meditation, breathing exercises and other relaxation techniques may help people manage stress and become more aware of their eating habits.
Research reviewed by the US National Center for Complementary and Integrative Health suggests that mindfulness-based approaches may help with eating behaviours, including emotional eating. Evidence that meditation alone produces substantial weight loss is less conclusive.
Meditation should therefore be viewed as a possible complement to broader health habits, rather than a treatment that directly removes body fat.
7. Get enough sleep
Sleep plays an important role in physical health, mood, concentration and appetite regulation. Insufficient sleep can affect the hormones and behaviours involved in hunger and food intake.
The amount of sleep a person needs depends partly on age. Most adults need at least seven hours a night, while teenagers generally require eight to 10 hours.
Maintaining a consistent sleep schedule and reducing stimulating activities before bedtime may help improve sleep quality.
Sleep should not be deliberately restricted in an attempt to change body weight. Adequate rest supports overall health and daily functioning.
8. Seek supportive relationships
Family members, friends and other trusted people can help individuals maintain healthy routines by offering encouragement and practical support.
A supportive environment may make it easier to prepare balanced meals, remain physically active and manage stress. Conversely, pressure, criticism and unrealistic expectations can make health-related changes more difficult.
Support should focus on wellbeing, energy, strength and sustainable habits rather than judging people by their appearance.
People who need additional help can also seek guidance from qualified healthcare professionals or registered dietitians.
9. Set realistic goals and monitor progress
Changes in health habits take time, and progress varies according to individual circumstances. Short-term fluctuations do not necessarily indicate whether a routine is working.
Setting manageable goals, such as becoming more physically active, improving sleep or eating a wider variety of nutritious foods, can help people establish routines they can maintain.
Keeping a simple record of activity, sleep and eating habits may help identify patterns and practical obstacles. Monitoring should support wellbeing rather than become a source of anxiety or pressure.
People with concerns about their weight, growth, nutrition or health should seek advice from a qualified healthcare professional before adopting a restrictive eating plan.
10. Be patient and prioritise long-term health
There is no reliable method that guarantees rapid weight loss for everyone. Claims promising dramatic changes within days or weeks should be treated with caution, particularly when they involve severe food restriction, unproven supplements or excessive exercise.
The CDC identifies gradual, sustainable lifestyle changes as an important part of long-term weight management. Maintaining healthy habits after a programme ends is also important.
The most appropriate approach depends on a person’s age, nutritional needs, medical history and circumstances. Rather than pursuing the fastest possible result, people should prioritise adequate nutrition, regular activity, sufficient sleep and professional guidance when needed.
