Mother and Daughter on Semaglutide: Why Your Experiences Differ So Much

Sharing genetics turns out to matter less than five other things, and once you see them the difference usually stops being mysterious. Response to these medications varies widely between any two people, and between a mother and daughter the age gap alone introduces differences in muscle mass, hormonal status, other medications, and how much weight each of you had to begin with.

Comparing is natural and it is also the thing most likely to make one of you feel like something is wrong. It usually is not.

The five things that actually differ

1. Where each of you started. Someone with more weight to lose generally loses more in absolute terms, and often faster early. Comparing pounds between two different starting points compares two different situations.

2. Where each of you is in treatment. Weight loss on these medications is front-loaded. Someone three months in is on the steep part of the curve. Someone ten months in is not. A gap of a few months makes two people look very different.

3. Dose, and whether escalation was completed. This is the single most common explanation and the one people leave out when they compare. Someone at an intermediate dose and someone at a maintenance dose are not on the same treatment.

4. Other medications. Several common ones make weight loss harder, including some antidepressants, antipsychotics, steroids, and certain diabetes medications. Untreated thyroid problems belong here too, and the likelihood of any of these rises with age.

5. Life stage. Menopause changes fat distribution and insulin sensitivity. Muscle mass declines with age, which lowers energy requirements. Activity levels usually differ. None of that is about the medication.

Consider this scenario: a daughter in her thirties is losing steadily and her mother in her sixties is barely moving, and both assume the medication works differently with age. Working through it, the mother stopped escalating at an intermediate dose eight months ago because of nausea that later resolved and was never revisited, and she started a new medication last year that is known to make weight loss harder. Neither of those is about age, and both are addressable.

Side effects vary just as much

The other half of the comparison. One of you may have had a difficult first month and the other almost nothing, at the same dose of the same drug.

Gastrointestinal effects concentrate early and around dose increases, and how strongly someone experiences them varies considerably. Our comparison of tirzepatide and semaglutide side effects covers the range within this class.

Women generally report more gastrointestinal side effects than men, and beyond that there is not much that predicts who will have a hard time.

Why comparing usually costs you something

Two people on the same medication comparing notes tends to produce one person feeling reassured and one feeling defective. That second position is where the harm is, because it leads to eating less, requesting dose changes for the wrong reasons, or stopping.

There is also a version specific to families: a parent and adult child discussing each other’s bodies and eating on a regular basis is a dynamic that can become uncomfortable regardless of anyone’s intentions. It is worth noticing if that is happening.

What to compare instead

Your own trend over time. Where were you three months ago, six months ago?

Percentage rather than pounds. A loss of five to ten percent of body weight is clinically meaningful and lands very differently in pounds depending on where each of you started.

Health markers. Blood pressure, blood sugar, joint pain, sleep, and mobility often improve on a different schedule from the scale, and for an older person they may be the more important outcome.

How you each feel. Energy, food noise, and whether eating has stopped occupying attention.

Our guide on getting the most out of your GLP-1 treatment covers the parts that are within each of your control, which differ between you as well.

What is worth raising with a provider

For whichever of you is doing less well, and only against your own history rather than the other person’s:

• Loss has been flat for eight weeks or more
• Escalation was never completed
• Appetite is not meaningfully suppressed at the current dose
• A new medication has been started since beginning treatment
• Thyroid function has not been checked

Our guide to semaglutide dose escalation covers what your provider weighs, and an incomplete climb is worth checking before anything else.

What not to do

Do not adjust a dose because of someone else’s results.

Do not eat less to catch up. Comparison-driven restriction is how a workable plan turns into an unhealthy one, and it brings the under-eating cluster: persistent fatigue, feeling cold, hair shedding, dizziness on standing, losing strength.

Do not share doses or prescriptions. Beyond the legal problem, your prescriptions are set for two different people.

Do not assume the slower one is doing something wrong. Five structural differences are listed above and none of them involve effort.

When to call

Contact your provider if your own trend has been flat for eight weeks or more, if you never completed escalation, if you take a medication that might be working against you, if appetite is not suppressed at your current dose, or if you have been restricting further because of how someone else is doing.

The short version

Starting weight, time in treatment, dose and whether escalation finished, other medications, and life stage explain most of it, and the dose question explains more than the rest combined. Compare against your own trend in percentage terms rather than against each other in pounds. And if the comparison has started to affect how either of you eats, that is worth noticing on its own.

If you want a provider who assesses your results against your own baseline, TrimRx includes ongoing provider access alongside treatment.

This information is for educational purposes and is not medical advice. Consult with a healthcare provider before starting any medication. Individual results may vary.