Weight that will not shift: why, and what medicine can now do about it
Why it happens
The body defends its weight. When intake falls, appetite-signalling hormones shift to increase hunger, satiety signals weaken, and resting energy expenditure drops by more than the loss of body mass alone accounts for. These adaptations persist long after the diet ends, which is why regain is the norm rather than the exception.
Then there are causes that no amount of effort addresses: thyroid dysfunction, insulin resistance, PCOS, Cushing's syndrome, and a long list of common medications — some antidepressants, antipsychotics, corticosteroids, beta blockers — that drive weight gain as a side effect.
This is worth stating plainly because most people arriving at this question have concluded the problem is their discipline. Usually it is not, and if there is an underlying metabolic or endocrine cause, no diet plan will work until it is identified.
Treatment options
| Option | How it works | Typical effect | Where |
|---|---|---|---|
GLP-1 receptor agonist | Mimics a natural hormone that regulates appetite and blood sugar; slows stomach emptying and increases fullness. | Up to 15% average body-weight loss at 68 weeks in studies | At Beauty Factory SD |
GLP-1/GIP dual agonist | Acts on two incretin pathways rather than one. | Up to 22.5% average at 72 weeks in studies | At Beauty Factory SD |
Nutrition and exercise programme | Protects lean mass during loss and sustains the result afterwards. | Essential alongside medication, not instead of it | At Beauty Factory SD |
Investigation of an underlying cause | Thyroid, insulin resistance, PCOS, medication review. | Varies — but nothing else works until this is ruled out | Raise at consultation |
Bariatric surgery | Alters the anatomy of the digestive tract. | Larger and more durable loss; a major operation | Not offered here |
What we would recommend
Start with a consultation with a physician rather than with a prescription. The medication is genuinely effective, but it is a prescription drug with an FDA boxed warning and a real contraindication list, and the first job is establishing whether it is appropriate for you and whether something else is driving the problem.
If it is appropriate, the programme pairs the medication with nutrition and exercise deliberately. Reduced appetite is the intended effect — but without adequate nutritional intake and activity, a considerable proportion of the weight lost is lean muscle mass. Medication alone produces a smaller, weaker version of the same body; that is not the outcome anyone is after.
Consultation is with a board-certified physician in our clinic, and there is a promotional first-month rate for the programme that includes it.
What it won't fix
The medication does not work independently of what you eat. It reduces appetite and slows gastric emptying; it does not neutralise intake.
It does not target where you lose from. There is no medication that removes fat from a chosen area, and loss will follow your own distribution.
It is not a short course with a permanent result. Trial data comes from more than a year of continuous treatment, and weight regain on stopping is common. Anyone framing this as a quick fix is misrepresenting it.
And it is not for everyone. You should not take a GLP-1 with a personal or family history of medullary thyroid carcinoma, with multiple endocrine neoplasia syndrome type 2, after a serious allergic reaction to a GLP-1 agonist or its ingredients, or during pregnancy or breastfeeding.
What we use for weight that will not shift
Common questions
Why can I not lose weight with diet and exercise?
Because the body adapts to defend its weight — appetite hormones increase hunger, satiety signals weaken, and resting energy expenditure falls by more than the change in body mass accounts for. Underlying conditions such as thyroid dysfunction, insulin resistance or PCOS, and a number of common medications, can also drive weight gain independently of effort.
How much weight do people actually lose on a GLP-1?
According to current studies, GLP-1 mono-agonists show average losses of up to 15% of body weight at 68 weeks, and GLP-1/GIP dual agonists up to 22.5% at 72 weeks. These are averages across trial populations over more than a year of continuous treatment.
Will I put the weight back on if I stop?
Regain after stopping is common, because the medication treats the appetite signalling rather than permanently resetting it. This is why the programme is built around nutrition and exercise alongside the medication rather than the medication alone.
Who should not take a GLP-1?
Anyone with a personal or family history of medullary thyroid carcinoma, a diagnosis of multiple endocrine neoplasia syndrome type 2, a previous serious allergic reaction to a GLP-1 agonist or any of its ingredients, or who is pregnant or breastfeeding.
Do I see a doctor or a salesperson?
Consultation is with a board-certified physician in our clinic, and it is included in the promotional first-month rate for the programme.
Stanislav Zayets, MD
Board-certified — American Board of Internal Medicine
Last reviewed August 7, 2026
Bring us the concern, not the treatment.
Tell us what's bothering you and we'll tell you which options genuinely address it — including when the answer is something we don't offer.