How to lose weight with hypothyroidism

Does hypothyroidism cause weight gain?

Hypothyroidism can contribute to weight gain, but the relationship is often more complex than many people realise. When the thyroid gland produces too little hormone, metabolism can slow down, which may reduce energy expenditure and increase fluid retention.

The amount of weight gain directly linked to untreated hypothyroidism is usually modest. For many people, it amounts to only a few kilograms, with some of the increase caused by fluid retention rather than an increase in body fat. Although hypothyroidism can contribute to weight gain, it rarely explains significant overweight or obesity on its own. Body weight is influenced by many factors, including genetics, lifestyle habits, sleep, stress and other medical conditions.

At the same time, symptoms such as fatigue, feeling cold and low energy can affect everyday life. It may become more difficult to stay active or maintain habits that support a healthy weight, which can contribute to further weight gain over time.

Can you lose weight with an underactive thyroid?

Yes, it is possible to lose weight if you have hypothyroidism. An important first step is ensuring that the condition has been properly assessed, treated and monitored by your doctor.

Once hypothyroidism is well managed, many people find that their energy levels improve, making it easier to make changes to their diet, physical activity and other lifestyle habits. For people living with overweight or obesity, weight loss with hypothyroidism relies on the same foundations as for anyone else: a long-term focus on nutrition, movement, sleep and recovery.

Weight loss medication can often be a valuable addition to lifestyle changes. The most appropriate treatment depends on an individual medical assessment.

How easy or difficult weight loss feels varies from person to person. Age, genetics, sleep, stress, other health conditions and previous weight changes can all influence results over time.

Summary

Hypothyroidism can affect metabolism and contribute to weight gain, fatigue and lower energy levels. The weight gain caused directly by hypothyroidism is often modest, but the symptoms can make it harder to maintain healthy lifestyle habits.

When hypothyroidism is well treated, many people are able to create better conditions for successful weight loss. For people living with overweight or obesity, a combination of healthy lifestyle habits, ongoing support and, when appropriate, medical treatment can contribute to better health and improved weight management.

How medical weight loss can support people with hypothyroidism

For people living with overweight or obesity and hypothyroidism, medical weight loss treatment may be used alongside lifestyle changes. Before weight loss medication is considered, it is important that hypothyroidism has been properly investigated and treated in line with current clinical guidance.

Modern weight loss medicines, including GLP-1-based treatments, affect the body's hunger and fullness signals. Many people experience reduced hunger, feeling full sooner and spending less time thinking about food, which can make it easier to reduce calorie intake and build new habits over time.

Obesity is a chronic disease in which biological mechanisms influence hunger, fullness and body weight. These mechanisms can make it difficult to achieve and maintain weight loss through lifestyle changes alone.

At Yazen, medication is combined with support from doctors and other healthcare professionals. Treatment is tailored to each person's health, goals and circumstances and also includes support with nutrition, physical activity, sleep and other lifestyle habits. The aim is not only weight loss, but also improved health and sustainable long-term habits.