Researchers uncover an unexpected brain-to-germline communication system that helps protect fertility during heat stress, revealing how environmental perception influences reproduction.

Why does heat make it harder to have healthy offspring? A new study suggests the answer isn't just in the reproductive organs—it's also in the brain. Researchers discovered that the brain can sense environmental conditions and send signals that help protect fertility during heat stress. The findings reveal a previously unknown communication system between the brain and reproductive cells, showing how animals may adjust reproduction when conditions become unfavorable. The research could help scientists better understand how rising temperatures affect fertility and whether similar protective mechanisms exist in humans.

New research reveals that cells of the same chronological age can follow dramatically different biological aging paths, offering new insights into cancer, neurodegeneration, and the fundamental biology of aging. Rather than aging uniformly, tissues become a mosaic of biologically younger and older cells, with some individual cells aging much faster than others—a discovery that could reshape how scientists understand aging and the earliest origins of age-related disease.

An evidence review of international research suggests widespread misconceptions within the medical community about early milk production, pacifiers and breast pumps may be undermining breastfeeding success in the critical first days after birth.

Researchers discovered an unexpected role for TRF2 in preserving muscle stem cell identity, offering new insights into muscle regeneration and muscular dystrophy.