What's a healthy rate of weight loss?

The healthy range

A healthy rate of weight loss is about 1 to 2 lb a week for most adults, according to the CDC. A handy personal version is 0.5% to 1% of your body weight per week, so the target grows or shrinks with you.

Week one is often higher because of water. Above 2 lb a week, check in with a clinician.

Bigger bodies can safely lose a bit more each week at first, and the pace naturally slows later.

Set your pace

Use the calorie deficit calculator: pick 0.5, 1, 1.5 or 2 lb a week and it shows your daily target. It won't go below 1,200 (women) or 1,500 (men) calories. Behind the scenes it uses your TDEE and the 3,500-calories-per-pound rule of thumb.

If you're not sure where to start, 1 lb a week is a safe, comfortable middle ground for most people.

A worked example of picking pace

Take a 40-year-old woman at 5 ft 6 in and 180 lb. She burns about 2,067 calories on a lightly active day.

• 0.5% a week (0.9 lb): a deficit of about 450, so she eats around 1,600. Comfortable and sustainable.
• 0.75% a week (1.35 lb): a deficit of about 675, so she eats around 1,400. Doable with good protein.
• 1% a week (1.8 lb): a deficit of about 900, which means eating under 1,200. Too low without medical supervision.

So her healthy range is about 0.9 to 1.35 lb a week, unless she adds activity. A brisk daily walk could burn a couple of hundred more calories and nudge her pace up. See her full numbers at TDEE for a 180 lb woman.

Why slower often wins

• More of the loss comes from fat, less from muscle
• Energy and mood stay steadier
• Lower gallstone risk than very rapid loss
• The CDC notes gradual losers are more likely to keep weight off

There's a practical reason too. A slower pace leaves room for normal life: birthday cake, dinners out, a lazy weekend. Plans with room for everyday life are the ones people still follow a year later, and that's what matters most.

Signs you're going too fast

• Losing more than 1% of body weight a week for several weeks
• Dizziness, fatigue, feeling cold, headaches
• Hair shedding or missed periods
• Strength dropping in the gym

If you notice these, add 200 to 300 calories a day and more protein. On a GLP-1 medicine with very low appetite, tell your prescriber. The TDEE on a GLP-1 tool shows whether you're eating too little.

Your body is giving you useful feedback, so it's worth listening.

Who should aim for a slower pace

• People close to their goal, when 0.25% to 0.5% a week helps protect muscle
• Adults over 65, since muscle and bone loss matter more with age. See sarcopenia
• People who train hard or play sports, who need fuel to perform and recover
• Anyone with a history of disordered eating, ideally with professional support

Pregnancy is a different case: weight loss usually isn't advised, so talk with your doctor about healthy eating instead.

Track the trend

Weigh at the same time once or several times a week and compare weekly averages in the weigh-in tracker. Expect the pace to slow as you get lighter, and recheck your calories every 10 lb.

A quick self-check: if your weekly average falls by 0.5% to 1% and you feel well, you're right on track. If it falls faster and you feel drained, ease off. If it barely moves for three weeks, tighten things a little. Simple rules like these take the guesswork and worry out of the process.

The pace on a GLP-1 medicine

Prescription GLP-1 medicines change the pace too, but it's still gradual. In SURMOUNT-1, people on the highest tirzepatide dose lost an average of 20.9% over 72 weeks. That averages out to roughly 0.3% of body weight a week, with faster loss in the first months as the dose steps up and a plateau later.

If appetite drops so much that you're eating very little, tell your prescriber. Protein and fluids matter even more on these medicines; see protein on a GLP-1. For a curve at your weight, try the GLP-1 projection.