Weight Gain After 35 May Indicate Thyroid Dysfunction, Experts Say

Weight gain after the age of 35 is often dismissed as a natural part of ageing, but health experts caution that unexplained changes in body weight may sometimes point to underlying medical conditions such as thyroid disorders. While factors like slower metabolism, reduced physical activity, stress, and hormonal shifts commonly contribute to gradual weight gain in midlife, persistent or sudden changes without lifestyle alterations should not be ignored.

The thyroid, a small butterfly-shaped gland located in the neck, plays a crucial role in regulating metabolism, energy levels, body temperature, and several vital bodily functions. When the gland becomes underactive, a condition known as hypothyroidism, the body’s ability to burn calories efficiently slows down. This can result in gradual weight gain, fatigue, and other symptoms that are often mistakenly attributed to normal ageing.

Medical experts note that weight gain alone is not sufficient to indicate a thyroid disorder. However, when it occurs alongside symptoms such as persistent tiredness, sensitivity to cold, dry skin, hair thinning, constipation, facial or neck swelling, mood changes, or difficulty losing weight despite diet and exercise, it may warrant medical attention. These symptoms typically develop slowly over time, which can lead many individuals to overlook early warning signs.

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Thyroid-related conditions are more commonly observed in women, particularly after the age of 35, due to hormonal fluctuations, pregnancy-related changes, and autoimmune factors. However, men can also be affected. Doctors emphasise that early detection is important, as untreated hypothyroidism may lead to complications such as high cholesterol, cardiovascular issues, fertility challenges, and prolonged fatigue, all of which can significantly affect quality of life.

Diagnosis of thyroid disorders is relatively simple and is typically done through a blood test known as a thyroid function test, which measures hormone levels. If detected early, hypothyroidism can be effectively managed with medication and lifestyle modifications, including a balanced diet, regular exercise, adequate sleep, and stress management. Many patients experience improvement in energy levels, mood, and weight regulation once hormone levels are stabilised.

Health professionals also advise against self-diagnosis based on online information and caution against the use of unverified supplements. Instead, individuals experiencing unexplained weight gain or related symptoms are encouraged to seek medical consultation for proper evaluation. While ageing does bring natural changes to the body, experts stress that sudden or persistent weight gain accompanied by fatigue or other symptoms should be medically assessed rather than dismissed as a normal part of growing older.

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