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Weekly · Sunday Morning

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Rapamycin extends mouse lifespan 9–14%
NAD+ precursors reverse aging in humans
Blue-light glasses improve sleep quality
Walking 10 min after meals blunts glucose
Verdict change — caffeine half-life downgraded

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Female Fertility Cycle: Ovulation to Implantation | Paula Amato, M.D. — Whalespan

Content›Video›Female Fertility Cycle: Ovul…

Female Fertility Cycle: Ovulation to Implantation | Paula Amato, M.D.

Peter Attia15m · 2025-06-10

Claims Made

36

Claims Supported

36

Support Rate

100%

Support rate

36 of 36 claims supported

36 supported0 partial / not

Claims from this content

19

✓Well SupportedFemales are born with approximately six to seven million eggs at 20 weeks gestation.✓Well SupportedEgg quality decreases as women age, leading to a higher probability of chromosomal abnormalities and difficulty getting pregnant.◐Partially SupportedAn embryo typically divides into 6-8 cells about 3 days after fertilization and reaches 60-80 cells by 5-6 days, which is the stage for uterine implantation.◐Partially SupportedAn egg takes five to six days to travel through the fallopian tube into the uterus.Partially Supported

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Attia walks back the clinic protocol: too aggressive for healthy adults

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A. Volkovreader

4h

Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.

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2d

Would love a "what would change this verdict" RSS feed. Sign me up if it exists.

◐

In IVF, an egg fertilized by sperm shows two pronuclei by the day after fertilization.

◐Partially SupportedThe fallopian tubes are approximately 5 to 10 centimeters long.

◐Partially SupportedThe selection of which egg follicle will mature and be released is driven by pituitary hormones, specifically FSH and LH.

◐Partially SupportedThe majority of eggs in a woman's ovaries undergo atresia before puberty.

◐Partially SupportedDuring the first 14 days of a woman's fertility cycle, follicles grow, one is selected, and surrounding cells produce estrogen.

◐Partially SupportedAfter fertilization, a single-cell zygote with a lined-up pair of chromosomes forms within a few hours.

◐Partially SupportedScarring in the fallopian tubes can interfere with egg and sperm encounter and fertilization.

◐Partially SupportedFertilization typically occurs in the fallopian tube, after which the embryo takes several days to travel to the uterus for implantation.

◐Partially SupportedCilia within the fallopian tubes aid in the motility of the egg towards the uterus.

◐Partially SupportedA surge in luteinizing hormone (LH) just before ovulation is believed to trigger the release of an egg.

◐Partially SupportedAfter puberty, typically one egg follicle grows per month and is released from the ovary.

◐Partially SupportedUnfertilized eggs are typically resorbed by the body, and the uterine lining sheds, resulting in a monthly period.

◐Partially SupportedEggs do not complete meiosis until ovulation or fertilization.

◐Partially SupportedFollicles increase in size and undergo cellular division as they develop.

◐Partially SupportedFertilization typically occurs in the fallopian tube, and the zygote travels to the uterus for implantation.