What photos are for
A photo shows shape and posture in a way a number cannot. Over months, a series taken the same way can make slow changes easier to notice, especially in weeks when the scale seems stuck.
It is still only a picture. It does not show blood pressure, blood sugar, how you feel or how your body composition has changed. Think of it as one part of a record that also includes your weight, notes and conversations with your clinician.
Health comes before appearance
NIDDK, part of the US National Institutes of Health, is direct on this point. Because side effects can sometimes outweigh benefits, it says a weight-management medicine should never be taken just to improve how you look [1].
It describes the benefits in health terms instead: losing 5% to 10% of starting weight may help lower blood sugar, blood pressure and triglycerides, and can ease problems such as joint pain and sleep apnea [1]. Those are things your clinician measures, not things a mirror shows.
Wegovy® before and after: what STEP 1 showed
STEP 1 is the trial behind the Wegovy® weight label, where it appears as Study 2 [3]. Adults without diabetes took semaglutide 2.4 mg or placebo once a week for 68 weeks, alongside a lifestyle programme [5].
The spread of results is more telling than the average. With semaglutide, 86.4% lost at least 5% of their starting weight, 69.1% at least 10% and 50.5% at least 15%; with placebo the figures were 31.5%, 12.0% and 4.9% [5]. Put the other way round, roughly one person in seven on the medicine did not reach a 5% loss.
Zepbound® before and after: what SURMOUNT-1 showed
SURMOUNT-1 is listed in the Zepbound® label as Study 1 [4]. Adults without diabetes took tirzepatide 5, 10 or 15 mg or placebo for 72 weeks, including a 20-week dose-escalation period [6].
A 5% loss was reached by 85%, 89% and 91% of people on the three doses, against 35% on placebo. A loss of 20% or more was reached by 50% on 10 mg and 57% on 15 mg, against 3% on placebo [6]. Even on the highest dose, then, 43 people in 100 did not reach a 20% loss.
STEP 1 and SURMOUNT-1 were separate trials with different people and designs, so their figures are not a ranking of the two medicines. Each describes only the people in that trial.
Results take time, and online photos are selected
NIDDK notes that most weight loss on these medicines happens within the first six months [1], yet the trial results above were measured after 68 and 72 weeks, with everyone also following a reduced-calorie diet and more activity. A month-one photo and a month-twelve photo describe different stages.
So a photo series is best compared with your own earlier photos, not with someone else’s. Pictures shared online are selected, often taken under different conditions, and they are not trial results.
A routine that keeps photos comparable
- Use the same spot, with the same background and the same light, ideally daylight from one direction.
- Wear the same fitted clothing each time, so changes in clothes do not look like changes in you.
- Keep the camera at the same height and distance; a timer or a shelf helps.
- Take the same poses every time: front, side and back, arms relaxed.
- Pick a regular moment, such as the morning of the same weekday, before eating.
How often is enough
Daily photos tend to show noise: a big meal, water, posture, light. Every two to four weeks is usually enough to see a trend without turning the camera into a daily judgement.
NIDDK’s habit guide encourages recording how you felt, not only what you did, and is clear that a slip is not a failure [2]. A one-line note next to each photo, such as energy, sleep or how your clothes fit, often says more than the image alone.
What photos cannot show
The Wegovy® and Zepbound® labels say the medicine lowers body weight with more of the loss coming from fat mass than lean mass [3][4]. A photo cannot separate the two, and neither can a scale. Trials also report waist size, which you can measure at home: the US NHLBI describes placing a tape around your middle just above the hipbones and reading it after you breathe out [7].
A photo also leaves out the context that explains it: which dose your prescriber had you on, whether that was a week of nausea or poor sleep, or a gap in treatment. Writing that down beside the photo keeps the series honest.
If photos start to make you anxious or unhappy with your body, it is fine to stop taking them. Mood changes are worth mentioning to your clinician in any case.
Keeping them private
Progress photos are personal health information. Decide in advance who, if anyone, will see them, and be careful with automatic cloud backups and shared albums if that matters to you. NIDDK lists sharing a milestone with friends as one possible reward [2]; whether a photo is part of that is entirely your choice.
There is no need to share them with your clinician unless you want to; weight, waist, notes and how you feel usually tell them more.
Wegovy® is a registered trademark of Novo Nordisk A/S. Zepbound® is a registered trademark of Eli Lilly and Company. PepLabo is not affiliated with or endorsed by Novo Nordisk or Eli Lilly and Company.
