What BMI Do You Need for GLP-1? Guide and Height Chart

Quick answer

In BMI terms, the National Institutes of Health puts the adult reference points at a BMI of 30 or greater, or a BMI of 27 or greater with a weight-related health problem such as high blood pressure or type 2 diabetes. A BMI calculator tells you which side of those lines you are on; a licensed physician decides whether treatment is appropriate.

BMI, or body mass index, relates your weight to your height. It is a screening number, not a diagnosis. Get your exact number in seconds with our BMI calculator, then compare it with the adult reference points in the table below.

What BMI do you need to qualify for GLP-1 treatment?

The BMI to qualify for GLP-1 treatment follows the adult populations studied for the weight-management labels cited here. The reference points are the same for semaglutide, tirzepatide and liraglutide: their labels describe the same adult groups, and their main adult trials used the same BMI entry points.

Adult BMI reference points at a glance

These are reference points for a physician's evaluation, not an approval. A licensed physician decides whether any treatment is appropriate.

Where do the numbers 30 and 27 come from?

You may read that the FDA label "requires" a BMI of 30. The labels cited here do not put it that way. As of November 8, 2026, the prescribing information for semaglutide injection and tablets, tirzepatide and liraglutide describes the approved adult weight-management population in words: adults with obesity, or adults with overweight in the presence of at least one weight-related comorbid condition. Each of these labels pairs the medicine with a reduced-calorie diet and increased physical activity.

The numbers come from two primary sources:

• The clinical trials summarized in each label. The main weight-management studies enrolled adults with a BMI of 30 or greater, or a BMI of 27 to just under 30 with at least one weight-related condition.
• NIH patient guidance. The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) says a health care professional may prescribe a weight management medication for an adult with a BMI of 30 or greater, or a BMI of 27 or greater with weight-related health problems.

So 30 and 27 are the adult reference points physicians work from, not a switch printed in the indication. The labels describe FDA-approved products only. They do not approve a compounded preparation or make one equivalent to an approved medicine, and whether any treatment fits you is a licensed physician's decision.

What weight is a BMI of 27 or 30 at my height?

The table below turns the thresholds into pounds using the standard formula: weight (lb) = BMI × height (in)² ÷ 703. Figures are rounded and informational only.

As a cross-check, the CDC's own example for an adult who is 5 feet 9 inches tall places the start of the obesity range at 203 pounds, which is what the formula gives. For heights between rows, or to use metric units, the BMI calculator gives the exact figure.

What counts as a weight-related condition?

It helps to separate three tiers.

Named in the label trials. The semaglutide and liraglutide weight-management trials give treated or untreated dyslipidemia (high cholesterol or triglycerides) and hypertension (high blood pressure) as examples. The tirzepatide trials name dyslipidemia, hypertension, obstructive sleep apnea and cardiovascular disease. People with type 2 diabetes were excluded from those main trials and studied in separate trials that enrolled adults with type 2 diabetes and a BMI of 27 or more.

Named by NIH. NIDDK gives high blood pressure and type 2 diabetes as examples of weight-related health problems.

Other conditions a physician may weigh. Prediabetes, fatty liver disease, polycystic ovary syndrome, and joint pain or osteoarthritis related to weight are real weight-related health concerns, but they are not on the example lists in the label trials or the NIH page cited here. Whether they count toward the threshold is physician judgment, not a rule you can read off a label.

In practice, the physician looks for a condition that is documented or can be confirmed, such as blood pressure readings, a cholesterol panel or a sleep study.

Why is the line at 27 and not 25?

The CDC defines adult overweight as a BMI of 25 to less than 30. The adult weight-management trials behind the labels, however, enrolled people with overweight starting at 27, together with a weight-related condition. So an adult BMI of 25 to 26.9 counts as overweight yet sits below the main adult weight-management trial populations in these labels, which is why the adult reference point is 27, not 25.

What is BMI and how is it calculated?

BMI (body mass index) is a simple calculation of weight in relation to height. Because it does not tell fat from muscle or bone, health care providers use it as a screening measure and read it alongside other findings.

How to Calculate Your BMI

Metric formula (CDC): BMI = weight (kg) ÷ height (m)²

US formula: BMI = (weight in pounds ÷ height in inches squared) × 703

BMI Categories

CDC categories for adults 20 and older:

• Less than 18.5: Underweight
• 18.5 to less than 25: Healthy weight
• 25 to less than 30: Overweight
• 30 to less than 35: Obesity Class 1
• 35 to less than 40: Obesity Class 2
• 40 or greater: Obesity Class 3 (severe obesity)

How do you calculate your BMI at home?

Weigh yourself in pounds, measure your height in inches, and use the US formula above.

For example, someone who is 5'7" (67 inches) and weighs 210 pounds:

• 67 × 67 = 4,489
• 210 ÷ 4,489 = 0.0468
• 0.0468 × 703 = BMI of 32.9

A BMI of 32.9 falls in Obesity Class 1. BMI is one screening input; whether GLP-1 treatment is appropriate is always a licensed physician's decision.

What if BMI doesn't tell the whole story?

Some people, particularly athletes or people with high muscle mass, may have a high BMI but low body fat. Others may have a normal BMI but carry excess abdominal fat, which poses health risks.

The CDC notes that BMI does not distinguish between fat, muscle and bone mass, and does not show where in the body a person carries fat. It calls BMI a screening measure to weigh alongside medical history, health behaviors, exam findings and lab results.

Waist size is a simple addition. The NHLBI states that a waist circumference of more than 35 inches for women, or more than 40 inches for men, increases risk. To measure, stand, place a tape measure around your middle just above your hipbones, and read it just after you breathe out. On keeping muscle, see GLP-1 treatment and muscle.

BMI is just one piece of the puzzle: what else does a physician check?

While BMI is the primary screening tool for GLP-1 eligibility, it's not the only factor your doctor will consider.

Other Factors That Matter

• Medical history: Any conditions that might affect treatment safety
• Current medications: Possible drug interactions
• Previous weight loss attempts: History of diet and exercise efforts
• Waist circumference: An additional measure of abdominal fat
• Metabolic health markers: Blood sugar, cholesterol, blood pressure
• Family history: Especially medullary thyroid carcinoma (MTC) or MEN 2
• Pregnancy and plans: Current pregnancy, breastfeeding or plans to conceive

What rules treatment out under the labels

The cited labels list two contraindications: a personal or family history of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia syndrome type 2 (MEN 2), and a prior serious hypersensitivity reaction to the active ingredient or its excipients. No BMI result overrides either one.

Pregnancy is a separate question

Pregnancy is not one of those two contraindications, and it is not an ordinary caution either. For weight-management use, the semaglutide, tirzepatide and liraglutide labels warn of possible fetal harm and say to stop the medicine when a pregnancy is recognized. The semaglutide and liraglutide labels add that weight loss offers no benefit during pregnancy. Tell the physician if you are pregnant, could become pregnant, are planning a pregnancy or are breastfeeding.

What needs a careful conversation first

These are warnings and precautions in the cited labels. Each one calls for a careful conversation with the physician:

• A history of pancreatitis or gallbladder disease
• Severe gastroparesis, where the labels say use is not recommended
• Diabetic retinopathy in people with type 2 diabetes
• Insulin or a sulfonylurea, because of the risk of low blood sugar
• Oral hormonal birth control, which the tirzepatide label addresses directly
• A planned surgery or procedure under anesthesia or deep sedation
• Another GLP-1 medicine; the labels say combining them is not recommended

New to this class of medicine? Start with what GLP-1 medication is.

How does the BMI calculator relate to your physician's decision?

The calculator informs; the physician decides. It turns two measurements into one number. It cannot see your blood pressure, lab results, medications, family history or pregnancy plans, and it cannot confirm a diagnosis, which is why nothing is prescribed from a number. A result above 30 is not an approval, and a result below 27 is not a verdict on your health. Once Majesta Health enrollment opens, a US-licensed physician will review each file and decide whether treatment is appropriate, and nothing is charged unless a physician approves treatment. You can read about our medical team and when you are charged.

What if your BMI is below the threshold?

If you are an adult with a BMI under 27, you are below the range the adult weight-management trials in these labels enrolled and below the NIH adult reference points. NIDDK is clear that weight management medications aren't for everyone with a high BMI, and points to lifestyle programs that change eating and activity habits. You should still speak with a healthcare provider about other evidence-based approaches that might work for you. To prepare for that conversation, see questions to bring to your doctor.

This page covers weight-management labels. Medicines labeled for type 2 diabetes have separate indications; what GLP-1 medication is explains the difference.

Can you take GLP-1 medications if your BMI is higher than 40?

Yes, a higher BMI does not by itself rule out treatment. The cited label indications describe adults with obesity and set no upper BMI limit. At a higher BMI, a physician also weighs related conditions such as joint pain, sleep apnea and blood sugar before deciding whether treatment is appropriate.

How to check if you may qualify, step by step

1. Measure your height, weight and waist.
2. Calculate your BMI with the BMI calculator or the formula above.
3. List diagnosed conditions, such as high blood pressure, high cholesterol, type 2 diabetes or sleep apnea.
4. List medications and family history, including any thyroid cancer in the family, and note pregnancy plans.
5. Prepare for the physician review. Once enrollment opens, a licensed physician will review this information. The process from intake to decision is covered in how to qualify for compounded semaglutide, and you can check your state on our states page.

With these details ready, select Start Your Assessment.

What does treatment cost if a physician approves it?

Current plan prices and terms are on our pricing page. Enrollment has not opened yet; the assessment is free, and nothing is charged unless a physician approves treatment.

Compounded medications are not FDA-approved as final products. If a physician approves treatment, a state-licensed 503A pharmacy prepares a patient-specific prescription. Meeting the label criteria is not the same as insurance coverage; for that question, see does insurance cover compounded GLP-1.

Want early access when enrollment opens?

Only a licensed physician can decide whether GLP-1 treatment is right for you, after reviewing your full health history.

Enrollment has not opened yet. You can take the free 2-minute assessment now to join early access, and we will email you when enrollment opens. A physician reviews assessments only after enrollment opens, so taking it does not start treatment or book an appointment.

This article is for informational purposes only and does not constitute medical advice. Medication is prescribed only if a licensed physician determines it is appropriate. Always consult with a qualified healthcare provider. Individual results may vary.