Where does the 1.2 to 1.6 grams per kilogram range come from?
The range comes from nutrition guidance for people actively losing weight. A 2025 joint advisory from the American College of Lifestyle Medicine, the American Society for Nutrition, the Obesity Medicine Association and The Obesity Society notes that targets of 1.2 to 1.6 g/kg a day have been proposed during weight reduction, well above the 0.8 g/kg recommended daily allowance for the general population.
The higher figure exists because GLP-1 medicines cut appetite so sharply. When total food intake falls, protein falls with it unless you plan for it, and the muscle you are trying to keep needs that protein to hold steady.
How many grams is that for a man weighing 200 to 280 pounds?
Here is the guideline converted to daily grams, using current body weight. Divide pounds by 2.2 to get kilograms, then multiply.
| Body weight | In kilograms | At 1.2 g/kg | At 1.6 g/kg |
|---|---|---|---|
| 200 lb | 91 kg | 109 g | 145 g |
| 220 lb | 100 kg | 120 g | 160 g |
| 240 lb | 109 kg | 131 g | 174 g |
| 260 lb | 118 kg | 142 g | 189 g |
| 280 lb | 127 kg | 152 g | 203 g |
Those upper numbers are hard to reach on a medicine that leaves you full after half a plate. That is the main reason the next question matters.
Should you use your current weight or your lean mass?
For most men carrying significant extra weight, a lean-mass target is more realistic. The advisory says it is unclear which body weight these goals should be based on and that using actual weight can significantly overestimate protein needs. It describes 1.5 grams per kilogram of lean body mass as more accurate when body composition data are available, or a simple fixed target of 80 to 120 grams a day to make it easier to stick with.
The difference is large. A 240-pound man at 35 percent body fat has about 156 pounds (71 kg) of lean mass, which puts 1.5 g/kg at roughly 106 grams a day, against 131 to 174 grams on scale weight. A body composition analysis gives your provider the lean mass number to work from instead of an estimate.
How do you hit the number with two small meals?
Front-load protein, and spread it across small eating occasions instead of relying on two plates. The advisory suggests small, frequent meals when hunger is low, eating the protein on your plate first, and using foods such as cottage cheese, soups, smoothies and protein drinks when solid food is hard to face.
MedlinePlus offers a handy rule of thumb: one ounce of most protein-rich foods, such as meat, fish or poultry, contains about 7 grams of protein, and one large egg counts as roughly one ounce. With that, a two-meal day can still reach about 125 grams:
| When | What | Approximate protein |
|---|---|---|
| Late morning meal | 3 eggs plus 3 oz turkey or smoked salmon | About 42 g |
| Early afternoon | A protein shake with at least 30 g on its label | About 30 g |
| Evening meal | 5 oz chicken, fish or lean beef, eaten first | About 35 g |
| Evening snack | Greek yogurt or cottage cheese with at least 18 g on its label | About 18 g |
If nausea or early fullness makes even this hard, drink the shake slowly, and eat the protein before vegetables or starch. Our page on constipation on a GLP-1 covers fluids and fiber, which matter when protein goes up.
Does extra protein protect muscle on its own?
No, and this is the step men skip most often. The advisory states that more protein alone is likely inadequate to preserve muscle without structured resistance training, and it recommends strength training at least three times a week. The CDC physical activity guidelines also call for muscle-strengthening work on two or more days a week.
Protein supplies the building material; lifting tells the body to keep using it for muscle. Without the training signal, a good share of what you lose can still be muscle, as our answer on muscle loss on semaglutide explains. Holding on to that muscle also helps how your body looks at the end, which ties into whether you notice loose skin after GLP-1 weight loss.
How Ultimate Male sets your protein target
At Ultimate Male, protein is part of the medical plan rather than an afterthought. In our medical weight loss program, your provider in San Gabriel or Downey can use your labs, including kidney function, and your body composition to help set a daily gram target that fits your lean mass, your appetite and your training.
Follow-up check-ins are where you see whether lean mass is holding as the scale drops. If it is not, the fix might be more protein, a different meal pattern, a training change or a slower dose climb. Bring a few days of food notes to your visit; they make the conversation concrete. Our guide to eating and training on a GLP-1 is a good read before you come in.
