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The right amount, honestly
If you want to lose fat, eat a little below what you burn, not far below it. We give you a ballpark, a pace, and a floor, and we tell you what the evidence does not know.
What you need to do
If fat loss is your goal: eat about 300 calories a day below your estimate, and never below 1,200 without your physician. Aim to lose 0.5 to 1% of your body weight a week. Weigh daily, judge weekly. If you are not trying to lose, eat at your estimate and let protein and lifting do their work.
- Your estimate comes from the setup quiz: your size, age and activity. Real bodies miss it by a few hundred either way. It is a ballpark, not a prescription.
- Going too slow for three honest weeks? Cut 100 to 150 calories or add 1,500 steps. One lever, not both.
- Going faster than 1.5% a week? Add 100 to 150 back. Fast losses cost muscle and bone.
- No calorie counting forever. Track one honest week to learn your portions, then track again only if the scale stalls.
Challenges that build this
What the research says
Losing about 0.7% of body weight a week while lifting gained lean mass; losing 1.4% a week did not [18]. In postmenopausal women, severe restriction lost twice the weight but proportionally more muscle and about two and a half times more hip bone density than moderate restriction [19]. Across 52 studies of middle-aged and older adults, four in five diet-only groups lost at least 15% of their weight as lean mass; with exercise, that dropped to two in five [12]. Slower loss keeps more lean mass for the same total [17].
Named diets do not matter much. A healthy low-fat and a healthy low-carb diet lost the same weight over a year, and sticking with it predicted success in both [67]. Across 121 trials, most named diets lose 4 to 5 kg at six months and the differences fade by a year [68]. Low-carb eating does raise type 2 diabetes remission at six months, so it is a good route if you prefer it [69], but remission tracks the weight lost, not the diet's name [70].
Fasting windows add nothing on top of a calorie deficit [73] [72], and compressed windows make it hard to hit a protein target after 60. Three protein meals inside a 10 to 12 hour window is the safer pattern.
The honest part
Nobody has established a calorie number that produces 'optimal health', for menopausal women or anyone else. Anyone handing you a universal number, especially 1,200, is selling confidence the evidence does not have. Metabolism does not collapse at menopause [21], and after weight loss it slows only modestly, about 50 to 100 calories a day once weight settles [20]. Appetite, not a broken metabolism, is the obstacle.
Sources on this page
- Garthe 2011, Int J Sport Nutr Exerc Metab. Losing about 0.7% of body weight a week while lifting gained lean mass; losing 1.4% a week did not. The source of the 0.5 to 1% a week pace.
- Seimon 2019, TEMPO trial, JAMA Netw Open. 101 postmenopausal women. Severe restriction lost twice the weight but proportionally more lean mass and about two and a half times more hip bone density than moderate restriction. The single best argument against crash dieting in this decade.
- Weinheimer 2010, Nutr Rev. In 52 studies of middle-aged and older adults, 81% of diet-only groups lost at least 15% of their weight as lean mass. With exercise added, only 39% did.
- Ashtary-Larky 2020, Br J Nutr. Slower weight loss keeps more lean mass than fast weight loss for the same total lost.
- Gardner 2018, DIETFITS, JAMA. 609 adults, one year: a healthy low-fat diet and a healthy low-carb diet lost the same weight. Sticking with it mattered more than the macro split.
- Ge 2020, BMJ. 121 trials of named diets: most lose 4 to 5 kg at six months and the differences between them largely disappear by a year. The name on the diet is marketing.
- Goldenberg 2021, BMJ. Low-carbohydrate eating raised type 2 diabetes remission at six months. The edge faded by a year, which points back to adherence.
- Lean 2018, DiRECT, Lancet. Nearly half of people with type 2 diabetes reached remission at one year through weight loss. Remission tracked the weight lost, not the diet's name.
- Liu 2022, N Engl J Med. Over a year, adding an eight-hour eating window to calorie restriction added nothing to the weight lost. Fasting works when it cuts calories, and not otherwise.
- Lowe 2020, TREAT, JAMA Intern Med. Twelve weeks of 16:8 fasting lost no more weight than three meals a day, and the fasting group showed a hint of lean-mass loss.
- Pontzer 2021, Science. Adjusted for body size and muscle, energy burn holds steady from age 20 to 60. There is no menopause cliff in metabolism. What changes is muscle mass and where fat is stored.
- Martins 2022, Am J Clin Nutr. The slowing of metabolism after weight loss is real but small once weight settles, roughly 50 to 100 calories a day. Appetite, not a broken metabolism, is the obstacle.