If your weight changed soon after starting HRT, it is understandable to blame the newest thing. But timing is not proof of cause.
The NHS says there is little evidence that most types of HRT make people gain weight. Weight can also change during menopause and as we get older, whether or not HRT is used.
Some people notice bloating or fluid retention with HRT. That can change how clothes fit or how the body feels, but it is not automatically the same as lasting fat gain.
HRT is not a weight-loss treatment. Decisions about it should be based on the symptoms being treated, medical history, likely benefits, possible risks and personal preferences.
If side effects are severe or continue for longer than three months, speak to your GP. Do not stop or change prescribed HRT without discussing it with the person who prescribed it.
Save this for your next HRT review.
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Sources checked 18 August 2026:
– NHS, Side effects of hormone replacement therapy: https://www.nhs.uk/medicines/hormone-replacement-therapy-hrt/side-effects-of-hormone-replacement-therapy-hrt/
– University College London Hospitals, Menopause: https://www.uclh.nhs.uk/our-services/find-service/womens-health-1/gynaecology/reproductive-medicine-unit/menopause