# Weighing yourself on a GLP-1

> NHS England suggests regular weigh-ins at the same time of day, preferably in the morning, at weekly to monthly intervals. This is general guidance; your healthcare team can advise on a routine for Mounjaro or Wegovy.

Canonical: https://jabwise.app/guides/weighing-yourself. Sources checked 20 October 2026. General information, not medical advice: follow your prescriber.

Topics: [Food, drink & weight](https://jabwise.app/guides/topics/food-drink-and-weight), [Everyday life](https://jabwise.app/guides/topics/everyday-life)

## A consistent weigh-in

NHS England describes these checks for more consistent readings.

- **The same scales**: NHS England recommends the same scales in the same location each time, on a firm, level floor for accurate readings.
- **Similar clothing**: Its leaflet suggests little or no clothing, with similar items each time, avoiding shoes and heavy items where possible.
- **Both feet on the scales**: The leaflet says to stand with both feet on the scales and your weight evenly distributed; analogue scales start at zero.
- **A settled reading**: NHS England says to keep still on the scales until the number has stopped moving, then record the weight that is shown.

## What the numbers can tell you

The NHS describes weight and BMI as parts of weight management. Its advice also recognises the limits of a BMI result.

- **A record over time**: The NHS recommends realistic goals and regular weighing to check how things are going. It also says changing habits and losing weight takes time.
- **BMI has limits**: The NHS says BMI cannot distinguish muscle from fat. Someone with a lot of muscle may be placed in a higher BMI category despite not having much body fat.
- **Waist measurements**: For adults with a BMI below 35, the NHS says waist-to-height ratio can help assess whether they carry too much fat around their tummy.
- **Support with your goals**: The NHS says a GP can advise on losing weight safely and refer you for treatment. They can also help with conditions that may affect your weight.

## Questions

### Do I need to weigh myself every day?

NHS England’s general leaflet suggests weekly to monthly intervals. Your healthcare team can advise if your care needs a different routine.

### What if I do not have scales at home?

NHS England says health centres and pharmacies are likely to have private weighing areas. Gyms and leisure centres often have scales, sometimes for a fee.

### Does a BMI result decide my treatment?

BMI is one part of the picture. The NHS says access to weight-loss medicines can depend on BMI and other health conditions affected by weight. Your prescriber makes decisions about your treatment.

## In Jabwise: Last 4 weeks

Your month beside the last. Jabwise puts your latest 4 weeks of weight beside the 4 before them, with the number of weigh-ins behind each figure. It gives you a record to discuss with your healthcare team.

## Getting real advice

- **A pharmacist, your doctor or NHS 111**: If you’re not sure how to use your medicine, or a side effect bothers you or won’t go away. NHS 111 if you think you might be having serious side effects, or you’ve used too much. [NHS: Semaglutide](https://www.nhs.uk/medicines/semaglutide/), [NHS: Tirzepatide](https://www.nhs.uk/medicines/tirzepatide/), [NHS 111 online](https://111.nhs.uk/)
- **Report a side effect**: Anyone can, not only doctors. [Yellow Card (UK)](https://yellowcard.mhra.gov.uk/), [MedWatch (US)](https://www.fda.gov/safety/medwatch-fda-safety-information-and-adverse-event-reporting-program)

## Sources

- [NHS England: how to record your weight (PDF)](https://www.england.nhs.uk/wp-content/uploads/2021/06/PRN00916-how-to-record-your-weight.pdf)
- [NHS: overweight and obesity in adults](https://www.nhs.uk/conditions/overweight-and-obesity/)