Symptom

Unexplained weight gain

Unexplained weight gain means situations where body weight increases without a clear reason, such as a change in diet or reduced exercise. The symptom may appear as steady weight gain over weeks or months, and it may also be accompanied by other symptoms such as tiredness or swelling. In Finland, the most common causes of unexplained weight gain are hormonal changes, such as hypothyroidism, as well as lifestyle changes, stress, and age-related metabolic changes. Some medicines and treatments for illnesses can also affect weight.

Often unexplained weight gain is benign and related to changes in everyday life or the body's normal fluctuations. However, significant or rapidly progressing weight gain without an obvious reason may require investigation, especially if it is accompanied by other symptoms such as marked fatigue, feeling cold, constipation, or other changes in general well-being. If weight gain causes concern or is accompanied by other symptoms, it is a good idea to seek assessment from a healthcare professional. Together, if needed, you can find out the underlying causes and identify suitable treatment or support.

Frequently asked questions

Can hypothyroidism cause unexpected weight gain?

Yes, hypothyroidism can slow metabolism and lead to weight gain. If you suspect this, seek an appointment with a healthcare professional to have it checked.

When should weight gain be a cause for concern?

If the weight gain is rapid, unexplained, or accompanied by other symptoms such as tiredness or swelling, it is a good idea to book an appointment with a professional for further investigation.

Can stress affect weight gain?

Stress can change eating habits and affect bodily functions in a way that weight increases. If the situation continues or worries you, discuss it with a professional.

What if no cause for the weight gain is found in lifestyle factors?

If lifestyle factors do not explain the weight gain, there may be health-related causes behind it. In that case, it is worth seeking a doctor's assessment so that possible causes can be investigated.