How much protein do you need after a gastric sleeve?

After a gastric sleeve, your portions are much smaller. Every bite counts, and protein is the part of your plate that needs the most attention. Here is why it matters, how much guidelines recommend, and how to reach your target from day to day.

Why protein matters

Your body uses protein to heal after surgery and to build and repair tissue. Protein also helps you keep lean mass, such as muscle, while you lose weight. Lean mass supports your strength, how well you move and how much energy your body uses at rest.

When you do not get enough protein, it can show up as slow healing, hair loss, changes in your nails or feeling tired. Canadian guidelines list low protein among the possible causes of these changes after weight-loss surgery, together with low levels of some vitamins and minerals.

How much protein a day?

Guidelines give a range rather than one number for everyone:

• The 2019 nutrition guidelines from several North American medical societies, including the American Society for Metabolic and Bariatric Surgery, recommend at least 60 g of protein a day, and up to 1.5 g for each kilogram of your ideal body weight.
• The Canadian Adult Obesity Clinical Practice Guidelines suggest 1.2 to 1.5 g for each kilogram of your goal body weight, with at least 60 g a day after a sleeve.
• At 360 Sleeve, most people aim for 60 to 80 g a day. Your dietitian may set a different target for you, based on your size and your health.

In practice, that means some protein at every meal and at most snacks, every day.

Why it can be hard at first

Reaching your target takes planning, especially in the first months. Your stomach holds much less, your appetite may be low, and some foods may not sit well for a while. A 2021 review noted that close to half of people who have weight-loss surgery find it hard to follow protein recommendations.

This is common. Planning ahead helps, and your dietitian helps you adjust along the way.

Protein through the eating stages

• Full fluids: protein shakes and milk do most of the work, sipped slowly through the day.
• Puréed: blended chicken or fish, cottage cheese, plain Greek yogurt, and blended lentils or beans.
• Soft foods: eggs, flaked fish, moist chopped chicken or turkey, soft tofu and low-fat cheese.
• Regular diet: lean meat, fish, eggs, tofu, lentils, beans and low-fat dairy, filling about half of a small plate.

Your dietitian tells you when to move from one stage to the next.

Everyday tips to reach your target

• Eat protein first. Start each meal with the protein, then vegetables, then the rest.
• Eat on a schedule. A low appetite is common after surgery, so plan small meals and snacks instead of waiting until you feel hungry.
• Choose lean protein. Canadian guidelines describe a low-fat, high-protein way of eating after bariatric surgery.
• Keep easy options ready, such as hard-boiled eggs, plain yogurt, cottage cheese or a protein shake.
• Check food labels for the grams of protein in each serving.
• Keep a simple log in the first months, on paper or in an app, so you can see where you fall short.
• Stay active as your team allows. Guidelines pair enough protein with regular physical activity.

What to ask your dietitian

• What is my daily protein target, and why?
• Which protein foods suit the stage I am in now?
• How do I choose a protein shake, and how long should I use one?
• Should my target change if I become more active, or if my health changes?

Your dietitian sets the target that is right for you and reviews it at your follow-⁠ups. Six years of 360 Complete Care come with every sleeve, so you have support with this long after surgery.