Weight is easy to blame on one cause, but a careful view asks for more. When weight changes around the time a hormone is started, other things may have changed in the same weeks, and the first job is to sort them out.
Start with the timeline
When did weight begin to change?
Write the date a hormone was started or changed. Next to it, write the date you first noticed a change in weight. If weight was already moving before the start, that is important to tell your provider.
What else changed that month?
List sleep, appetite, stress, activity, other medicines and supplements. Any of these can sit in the same window as a hormone change.
Track weight with discipline
Same time, same conditions
Weigh once a week, at the same time of day, under the same conditions. Write down the number and anything unusual about the week. NIDDK's page on adult overweight and obesity describes the condition and is a useful background read.
Look for direction, not single readings
A single reading is noise. Several weeks in one direction is something to bring to a visit.
Where medicine fits in
If weight is a concern, ask your provider about all options, not only hormones. NIDDK's page on prescription medications to treat overweight and obesity describes one set of them.
For the hormone side, read a clinic's page on hormone replacement therapy for menopause and a menopause society's hormone therapy page. Look for anything they say about weight, and bring what you find to your provider.
Reading your timeline with a provider
Do not assume a hormone is the cause or that it is not. Build a timeline, track weight weekly and ask your provider to review it with you. Sorting your timeline against public health pages does not tell you whether a hormone caused your weight change.