The onset of a pregnancy is a complex biological process in which hormones, metabolism, and cellular functions work closely together. Insulin resistance, mitochondrial processes, and chronic metab...
In artificial insemination, every stage of development counts. After an egg is fertilized, embryologists in the lab monitor how the resulting embryos develop. Modern incubators with built-in camer...
A 19-year-old man in the United Kingdom has become the first patient in the country to have his own testicular tissue—which had been frozen prior to his chemotherapy—reimplanted. Doctors hope ...
When a pregnancy repeatedly fails to occur despite the desire to have a child, attention often turns first to the eggs or the quality of the embryos. Especially in fertility treatment, there is a ...
In fertility treatment, embryos can now be genetically tested even before transfer. Until now, however, this has required the removal of cells from the embryo. A new method aims to eliminate this ...
A fertility treatment involving a significantly lower number of hormone injections could be of interest to some women in the future. A new randomized study examined a so-called “two-shot” prot...
After fertilization, an astonishingly complex process begins: within a few days, a single cell develops into a tiny cluster of cells that can eventually implant itself in the uterus as a blastocys...
In Greece, a baby was born whose embryo had been frozen for more than 22 years. This extraordinary case raises an interesting medical question: How long can a human embryo remain frozen without lo...