Geschlechtsunterschiede beim Ab…
Same diet.
Same training volume.
Different results:
He loses four kilos. She loses her patience. But what are the reasons for this “gender weight gap”?
Muscle mass: The starting point is not identical
On average, men have around 10–15% more fat-free mass than women of the same age. The share of skeletal muscle is about 40–45% of body weight in men, and more like 30–35% in women. More muscle mass, however, also means a higher basal metabolic rate: One kilogram of fat-free mass burns about 13–15 kcal per day at rest.
- In practice, this often results in a daily energy expenditure that is about 100–300 kcal higher for men.
Energy regulation: Earlier counter-regulation
In women, hormonal regulation reacts more sensitively to energy deficits. The level of the satiety hormone leptin can drop by 30–50% even with moderate restriction, while the hunger hormone ghrelin increases. At the same time, adaptive thermogenesis reduces energy expenditure by 5–15%.
- A woman’s body therefore dampens expenditure earlier and more consistently.
Cycle: Weight is not a fixed reference value
Weight fluctuations of 1–2 kg within a cycle are physiological. In the luteal phase, basal metabolic rate increases by 2–10%, while at the same time, in many women spontaneous energy intake increases by 90–500 kcal per day. Progesterone additionally promotes fluid retention.
- Short-term scale values therefore often show the hormonal dynamics — not actual fat change.
Menopause: When distribution changes
With menopause, visceral fat volume increases by around 40–60%, while muscle mass decreases significantly — even if total body weight increases only moderately.
- On the one hand, visceral fat is metabolically active and promotes insulin resistance, inflammatory processes and cardiovascular risk. On the other hand, with less muscle mass, resting energy expenditure can be around 100–200 kcal per day lower.
So what is especially important for women
- Strength training + sufficient protein: 2–3×/week progressive training; 1.6–2.0 g protein/kg BW, to secure muscle mass and basal metabolic rate
- Moderate calorie deficit: about 300–500 kcal instead of crash diet
- Plan for cycle & life stage: 1–2 kg cyclical fluctuations are physiological; postmenopausal, focus more on waist circumference, strength values and metabolic markers)
What do you think: Do weight-loss strategies sufficiently take sex differences into account?