When applied at low concentrations, it improves embryonic development after vitrification of feline oocytes [108]
In addition, the donor was screened following the AATB standards for medical history, genetic screening, and vaccinations, including COVID-19
In an open uncontrolled trial in 20 men with idiopathic infertility and a low testosterone-to-estrogen ratio, three months of treatment with letrozole resulted in improved sperm motility and morphology, reduced sperm DNA fragmentation, increased testosterone-to-estrogen ratio, and four spontaneous pregnancies
This can activate white blood cells (WBCs), causing more damage and reducing the bodys ability to fight off disease
Brorson T, Skarping G, Renman L, Sang C