Fertility
Researchers have identified the gene NANOG as the key switch that initiates the developmental program resulting in cells forming a human body. The finding came from precise DNA edits to fertilized human eggs using CRISPR base editing.
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Cornell University researchers report that a compound known as JQ1 temporarily disrupted meiosis in male mice, halting sperm production during treatment and allowing sperm production and fertility to recover after the drug was stopped. The work was published April 7, 2026, in the Proceedings of the National Academy of Sciences.
Festive feasts don't have to come at the cost of fertility. Specialists say smart food choices—more protein, fibre and healthy fats, less sugar, fried food and alcohol—can help protect hormonal balance while still enjoying celebrations.
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Egg freezing has seen a 75-fold increase in women choosing it over a decade, driven by social media ads using algorithms for targeted promotion. Experts warn that this advertising prioritizes profit over objective information, adding pressure to reproductive decisions. While it offers a sense of control, it does not address underlying social issues like work-life balance.
New research reveals that genetic mutations in men's sperm, which can lead to diseases in offspring, increase with age due to evolutionary selection within the testes. Scientists used advanced sequencing to analyze sperm from 81 men aged 24 to 75, finding that harmful mutations affect 2 percent of sperm in early 30s men but rise to 4.5 percent in 70-year-olds. The findings, published October 8 in Nature, highlight risks for future generations.