Normalized second and fourth finger lengths in male and female partners and IVF cycle outcomes

ConclusionsIntrauterine exposure to high levels of oestrogens and androgens in females and males, respectively, predisposes to the production of higher-quality embryos under in-vitro conditions during adulthood. Paradoxically, this also seems to result in a lower pregnancy rate.
Source: Reproductive BioMedicine Online - Category: Reproduction Medicine Source Type: research