By C. Erick Kaufman, MD — Medical Director, Holistically Rx
If you've been thinking about medical weight loss but weren't sure whether you'd "qualify" — or whether medications like semaglutide or tirzepatide are really a first choice rather than a last resort — the medical field just gave you a clearer answer.
In June 2026, the American College of Physicians (ACP) published a new living clinical guideline in the Annals of Internal Medicine on using medications to treat overweight and obesity. "Living" means it will be continuously updated as new evidence arrives. As a physician who treats weight medically every day, I want to translate what this guideline actually says — and what it means for you.
One of the biggest misconceptions I hear from patients is: "I have to fail dieting first before medication is on the table."
That's not how modern obesity medicine works. Medication is appropriate to discuss when your BMI is 30 or higher — or as low as 27 when you have a weight-related condition such as prediabetes, high blood pressure, sleep apnea, or high cholesterol. If that describes you, you don't need to earn your way to treatment by struggling alone first. The decision is made with your physician, weighing your health risks, your goals, and your preferences — starting on day one.
That matters because carrying excess weight isn't a willpower problem. The ACP guideline describes overweight and obesity as chronic, progressive conditions that raise the risk of diabetes, heart disease, high blood pressure, and certain cancers. Chronic diseases deserve real medical treatment.
The ACP now recommends semaglutide (Wegovy) and tirzepatide (Zepbound) as first-line medication options. These belong to the GLP-1 class of medicines, which work with your body's own appetite and metabolic signaling rather than against it.
The results from the major clinical trials explain why they've moved to the front of the line. In the STEP 1 trial published in the New England Journal of Medicine, adults taking weekly semaglutide lost an average of about 15% of their body weight. In the SURMOUNT-1 trial, tirzepatide at its highest dose produced average losses above 20% — numbers that a decade ago were only achievable with bariatric surgery.
Here's the clinical honesty most weight-loss marketing skips: you don't need dramatic, before-and-after-photo weight loss to transform your health.
Losing just 5–10% of your body weight produces measurable improvements in blood pressure, blood sugar, and cholesterol. Above 10%, the benefits deepen — sleep apnea improves, liver fat declines, and many patients reverse prediabetes entirely. For a 220-pound person, that first meaningful threshold is just 11–22 pounds.
What's changed is the ceiling. With today's medications, losses of 15–20% are routinely achievable — which means the health benefits that used to require surgery are now within reach of a weekly injection combined with the right support.
If there's one thing I want every patient to hear before their first injection, it's this: obesity behaves like a chronic disease, and it's best treated like one.
The clinical trial data are clear-eyed on this point. In studies where patients stopped their medication — such as the SURMOUNT-4 trial published in JAMA — most regained a large share of the weight within a year, even with continued lifestyle efforts. That's not a personal failure; it's the biology of a chronic condition reasserting itself, the same way blood pressure rises again when someone stops their blood pressure medication.
That's why at Holistically Rx we counsel patients honestly from the start: medication is one pillar, and it works best planned as ongoing therapy — alongside improved nutrition, regular physical activity, and consistent monitoring, which continue the entire way through. Patients who understand this from day one succeed. Patients who plan to "stop at goal weight" are usually planning the most common way to fail.
The new ACP guideline confirms what those of us practicing medical weight loss have watched unfold: safe, highly effective, evidence-backed medications have changed what's possible — and the standard of care now reflects it. If your BMI is 30 or higher, or 27 with a condition like prediabetes or high blood pressure, you're a candidate for that conversation today.
If you'd like to have it with a physician who will give you the evidence straight, that's exactly what we do at Holistically Rx. Schedule a free consultation and let's talk about where you are, what the science says, and what a realistic, sustainable plan looks like for you.
This article is for educational purposes only and is not medical advice. Medical weight-loss treatment requires evaluation by a licensed physician. Always consult your healthcare provider about your individual situation before starting or stopping any medication.