Weight Loss on GLP-1s

Section

Nutrition

6 pages in this section, most recently updated September 4, 2026. Each opens with a plain-English summary and cites its sources.

  1. 01 · Nutrition

    Featured

    Protein targets on a GLP-1: the ranges, where they come from, and how to hit them on a small appetite

    You'll get: The 2025 advisory sets 1.2 to 1.6 grams of protein per kilogram a day, or 80 to 120 grams, while losing weight.

    The 2025 joint advisory range of 1.2 to 1.6 g/kg/day, the position stands and trials behind it, why the per-meal split matters more than the daily total when appetite is low, and who should have a clinician set the number.

    Updated September 4, 2026

  2. 02 · Nutrition

    Energy needs on a GLP-1: what Mifflin-St Jeor estimates, what it misses, and why the number falls

    You'll get: The calculator uses the Mifflin-St Jeor equation, which is within 10 percent for about 7 in 10 people with obesity.

    The equation the calculator uses, how accurate it is, the FAO/WHO/UNU activity multipliers, what the trials did with the estimate, and why a GLP-1 makes tracking calories less useful than tracking protein.

    Updated September 4, 2026

  3. 03 · Nutrition

    Eating when you have no appetite: small meals, protein first, and what the label says about nausea

    You'll get: The drug makes you want less of everything, including the protein, fluid and fibre you most need.

    The joint advisory's meal-pattern advice, the nausea and vomiting rates from the Wegovy label and when they cluster, what to eat on a bad day, and the signs that mean you should call your prescriber rather than push through.

    Updated September 4, 2026

  4. 04 · Nutrition

    Hydration and fibre on a GLP-1: the intake references, the kidney warning and constipation

    You'll get: About a fifth of your water comes from food, so eating half as much cuts fluid too. Thirst fades on these drugs.

    Adequate intakes for water and fibre from the Dietary Reference Intakes, why the labels warn about dehydration and acute kidney injury, the constipation rates, and how to get enough of both when you are eating half as much.

    Updated September 4, 2026

  5. 05 · Nutrition

    Alcohol on a GLP-1: calories, nausea, glucose and the label warnings that touch it

    You'll get: A standard drink carries about 100 calories from alcohol alone, before mixers or beer carbs.

    What a standard drink costs in energy, why the joint advisory says to minimise alcohol on GLP-1 therapy, the hypoglycaemia and pancreatitis warnings that make it more than a calorie question, and what many people notice about tolerance.

    Updated September 4, 2026

  6. 06 · Nutrition

    Micronutrients on a GLP-1: B12, vitamin D, iron and calcium, with the reference intakes

    You'll get: Halve your food and you halve your vitamins and minerals unless you choose what stays.

    The nutrients the 2025 joint advisory flags as at risk when intake halves, the reference intakes for each from the NIH Office of Dietary Supplements, the metformin and B12 connection, and which tests to ask about rather than which pills to take.

    Updated September 4, 2026