The Cabbage Soup Diet: The Recipe, the Reality, and What You're Actually Signing Up For

The cabbage soup diet reappears every decade or so because the 7-day premise is compelling. I've known people who tried it and lost 8–10 pounds, and then gained most of it back within 10 days. Understanding why — physiologically — changes how you interpret that outcome.

The Recipe

The standard recipe: 6 large green onions, 2 green peppers, 1–2 cans of diced tomatoes, 3 carrots, 1 container (10 oz) of mushrooms, 1 bunch of celery, half a head of cabbage, 1 packet of Lipton onion soup mix, and optional bouillon cubes for flavor. Roughly chop everything, cover with water, boil then simmer until soft. Season minimally.

The dietary plan pairs the soup — eaten unlimited — with specific daily additions: fruit-only days, vegetable days, banana-and-milk days, beef-and-tomato days. The combination keeps calories to roughly 800–900 daily while the soup volume provides enough physical stomach fullness to make it bearable. A quality large soup pot and proper storage containers make the week-long batch cooking functional.

Why You Lose 10 Pounds in a Week

The short answer: you don't lose 10 pounds of fat in a week. Fat loss at the most aggressive sustainable pace is 2–3 pounds per week. What accounts for the 7–10 pounds of scale loss on this diet is:

• Glycogen depletion: When you significantly reduce carbohydrate intake, your body empties glycogen stores from liver and muscles. Each gram of glycogen is stored with 3–4 grams of water. Depleting roughly 300–400g of glycogen drops 1–1.5kg of water weight within the first 2–3 days.
• Sodium reduction: The diet is very low in sodium. Lower sodium = less water retention = 1–3 additional pounds of water released.
• Digestive transit: Very high fiber, very low caloric density means less food mass in the GI tract at any given time.

The actual fat loss during the week is probably 1–2 pounds. The rest returns within a week of resuming normal eating.

The Week Experience

Days 1–2 are the hardest — genuine hunger, low energy as glycogen depletes. Days 3–5 are typically more tolerable. Significant gas and GI discomfort from the volume of cabbage and other high-fiber vegetables is almost universal. The abdominal discomfort is real enough that the American Heart Association specifically calls it out in their evaluation of this diet.

The monotony is significant. Seven days of cabbage soup as the centerpiece, with relatively predictable daily additions, tests whether food variety matters to you. For people who enjoy variety in eating, this is genuinely difficult beyond day three.

Is It Nutritionally Adequate for a Week?

Approximately adequate for a week, with caveats. Protein intake is very low on fruit and vegetable days, which means muscle loss rather than only fat loss during the caloric deficit. The banana-and-milk day adds some protein. The beef day is the protein day. A multivitamin during the week provides insurance against micronutrient gaps. It's not dangerous for a week in a healthy person; it wouldn't be appropriate for longer.

What I'd Skip

I'd skip expecting the weight to stay off after the week ends without a plan for what comes next. The physiological reset — refilling glycogen stores, returning normal sodium balance — means 5–7 of those pounds return automatically. Framing the diet as a "jump start" with a maintenance plan following it makes more sense than expecting 10 pounds of sustained fat loss from a 7-day protocol.

I'd also skip doing it more than once in a short period — cycling extreme restriction repeatedly disrupts metabolic rate and the relationship with food in ways that are counterproductive long-term.

The bottom line: the cabbage soup diet works by severe caloric restriction that's mostly tolerable because the soup volume fills your stomach. The scale results are real but largely temporary, driven by water and glycogen rather than fat. If you do it, know what you're actually achieving, have a plan for afterward, and don't mistake the water weight loss for fat loss that you need to protect.