If your clinician has prescribed a GLP-1, appetite often drops fast — which makes a few quiet basics worth knowing: enough protein, some strength work, gentle eating through side effects, and steady fluids and fibre. This page is plain, source-cited background to talk over with the person who prescribed your medicine. It is not medical advice, it never touches dosing, and nothing here is a promise about your results — talk to your clinician.
This is education, not instruction. It gathers the same neutral, cited basics that HaleHearth's GLP-1 apps show inside the app — eating and training background for people already on a clinician-prescribed medicine — and puts them in one place you can read before a check-up.
It never tells you what to eat for your body, and it never touches your prescription. Dose, titration, timing, and whether a medicine is right for you are decisions for you and your prescriber. If anything here differs from what your clinician told you, follow your clinician.
When people lose weight — by any method — some of what leaves is lean mass, not only fat. In trials of these medicines, a meaningful share of the weight lost has been lean mass; the aim isn't to fear that, it's to help protect it. "Lean mass" on a body scan includes muscle, water and other tissue, so some of that change is water, not muscle.
Clinical guidance for adults losing weight commonly points to a higher protein intake to help hold on to muscle. Published guidance suggests roughly 1.2–1.6 g of protein per kg of body weight per day during weight loss, and a little more (up to about 1.7 g/kg) when you're also strength-training. The right basis for you depends on your health and kidneys — that's a conversation for your clinician or a dietitian, not a number to set alone.
One honest caveat: protein alone is likely not enough to protect muscle. The other half is showing the muscle a reason to stay — resistance training.
Strength training is the muscle-protecting half that food can't do on its own. General physical-activity guidance suggests working all the major muscle groups on at least 2 days a week (2–3 days is a common pattern), with rest between sessions. You don't need a gym or heavy loads to start — bodyweight, bands, or light dumbbells all count while you build the habit.
A simple, balanced week covers a few movement patterns rather than chasing any one muscle. Think of it as a menu of patterns, not a rigid program — and if you have joints, a heart condition, or you're new to lifting, clear the plan with your clinician first.
Digestive side effects are the most common reason eating gets hard on a GLP-1, especially early on and around any change your prescriber makes. Most are things that ease over time. The general, published tips below are about comfort and nutrition — they are not a reason to change your medicine, which is never a decision to make on your own.
None of these replace medical care. If a symptom is severe, won't settle, or you can't keep fluids down, contact your healthcare provider.
Eating less usually means drinking less by default, so fluids are worth a deliberate thought. Sipping through the day supports how you feel and is part of managing several of the digestive side effects above; if you can't keep fluids down, that's a reason to contact your provider, not to push through.
Fibre works alongside fluid, especially for constipation. General U.S. dietary guidance suggests about 14 g of fibre per 1,000 calories eaten, from everyday foods like vegetables, fruit, beans, and whole grains — increased gradually and with enough water. As with protein, treat this as a background target for adults, and let your clinician tailor it if you have gut conditions or other needs.
Day-to-day weight is noisy. It can swing noticeably within a day from water, food, salt, and hormones, so a single morning tells you very little — the weekly trend is the signal. Fast early drops are also partly glycogen and water leaving; real fat change shows up over weeks.
Slowing or pausing is normal, too. Weight change is usually fastest early and eases over time, and most people reach a plateau at some point. A plateau is a common pattern, not a personal verdict or a failure. What it's worth is a calm look at the basics you can see — protein, sleep, logging gaps — and a conversation with your provider about what your own progress means.
Larger, rapid weight loss can also affect bone density — another reason protein, strength training, and clinician follow-up matter for more than just muscle.
HaleHearth builds honest-about-limits tools that support a clinician-prescribed regimen. They record what you did and show it back; they don't recommend, dose, or promise outcomes.
Retain is a food and habit journal for people on a GLP-1: it logs meals against a protein target you set, notes strength sessions, and shows side-effect and weekly-weight trends — with plateau and body-composition explainers written the way this page is. GLP1 Base is a dose-and-shot log built around the weekly injection cadence: it records the drug, strength, injection site (with a rotation map), and pen or vial remaining, and lays out your prescriber's own titration plan; it never recommends or calculates a dose. Vialry is a vial-and-injection journal; its reconstitution helper only divides numbers you enter yourself and always shows those inputs — it is described here, never operated, and it never originates a dose or a draw-volume.
Not medical advice — talk to your clinician. Everything on this page is general education for people already under a prescriber's care. It does not diagnose, treat, or cure anything, it is not a medical device, and it never gives dosing guidance. Any figures are drawn from the named public sources below; your situation is unique, so bring your questions — and any decision about your medicine — to your healthcare provider.
Published weight-loss guidance for adults points to roughly 1.2–1.6 g of protein per kg of body weight per day, and a little more (up to about 1.7 g/kg) if you're also strength-training. That's a general range, not a personal prescription — your clinician or dietitian sets what's right for your kidneys and health history.
Because some of the weight lost by any method is lean mass, not only fat. Protein helps, but protein alone is likely not enough to protect muscle; general guidance suggests strength-training all the major muscle groups on at least 2 days a week to give the muscle a reason to stay.
That's not a decision to make on your own, and this page never covers dosing. General comfort tips — smaller, blander, lower-fat meals and sipping fluids between meals — help some people, but if a symptom is severe, persistent, or you can't keep fluids down, contact your healthcare provider.
Probably not. Weight change is usually fastest early and slows over time, and most people reach a plateau at some point. It's a normal pattern, not a failure — a calm look at the basics you can see (protein, sleep, logging) and a conversation with your provider is the honest next step.
No. They are records, not advisors. Retain journals food and trends, GLP1 Base logs the dose and injection your prescriber directed, and Vialry's helper only divides numbers you enter yourself. None of them recommend, calculate, or adjust a dose — that stays entirely with your prescriber.
A protein floor to help protect muscle, resistance-training prompts, injection-site rotation and no-shame weigh-in trends. Support, never dosing advice.
An on-device records journal and source-cited learning library for a clinician-prescribed GLP-1 routine. No account, no cloud, no AI.
A private journal, reconstitution calculator and active-amount estimator for a clinician-given protocol. No account, no cloud, everything on your iPhone.