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Mary Claire Haver, MD@drmaryclaireTikTok

For decades, women were told the answer was simple: eat less and work out more. But when …more

original sound — @drmaryclaire

what it claims

To maintain hormonal balance and metabolic health, the classic 'eat less, move more' approach is insufficient or even counterproductive. One should prioritize a diet rich in healthy fats, protein, and especially fiber, while avoiding sacrificing the latter in favor of an excess of protein.

holds up

The recommendation not to exhaust oneself with exercise while in a caloric restriction is validated by science: a consensus from the Endocrine Society (2017) confirms that a…

noli's read

The recommendation not to exhaust oneself with exercise while in a caloric restriction is validated by science: a consensus from the Endocrine Society (2017) confirms that a severe energy deficit directly disrupts hormones related to fertility and vitality. Furthermore, healthy fats are essential as they serve as building blocks for hormones, while fiber supports the estrobolome (the gut bacteria that regulate estrogen), as highlighted in an observational study published in The Journal of Nutrition. However, the claim that sacrificing fiber for protein is the current 'biggest mistake' among women is more of an expert opinion and lacks comprehensive comparative data. Nevertheless, the approach of nourishing the body to stabilize hormones rather than imposing intense physical stress on it rests on very solid biological foundations.

the sources

  1. 1Reynolds A et al. 2019
  2. 2Jovanovski E et al. 2019
  3. 3Morton RW, Murphy KT, McKellar SR, et al. 2018
  4. 4Leidy HJ, Clifton PM, Astrup A, et al. 2015

Claimed by Mary Claire Haver, MD. Noli grades the claim, never the person.

Decoded by Noli · July 14, 2026 · the original post

What the graded evidence says

Evidence
B+
Effect
fat-free mass gain (resistance training) and appetite/satiety — +0.30 kg fat-free mass with protein supplementation (95% CI 0.09-0.52), plateau at ~1.62 g/kg/day; higher protein meals reliably increase satiety vs equal-calorie lower-protein meals
Measured on
healthy training adults; weight-loss and weight-maintenance adults

What’s uncertain

More protein past roughly 1.6 g/kg/day doesn't add much for muscle or fullness. The satiety edge is real but modest, not a magic appetite switch.

Mary Claire Haver, MD in the Register58 claims graded · solidity 89/100See their record →

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