Summary: New research shows that intermittent fasting, while beneficial for metabolic health, may slow hair regrowth by impairing hair follicle stem cells (HFSCs). In mice, fasting caused HFSCs to undergo apoptosis during extended fasting periods due to oxidative stress and free fatty acid buildup.A small clinical trial suggested a milder...

Summary: AI systems, including large language models (LLMs), exhibit “social identity bias,” favoring ingroups and disparaging outgroups similarly to humans. Using prompts like “We are” and “They are,” researchers found that LLMs generated significantly more positive sentences for ingroups and negative ones for outgroups.Fine-tuning training data, such as filtering out...

Summary: A new review explores the genetic factors influencing reproductive health, fertility, and life expectancy. Researchers identified 37 key genes linked to traits such as age at first childbirth, menopause timing, and hormone levels, highlighting genetic connections to broader health outcomes.Notable findings include the FSHB gene’s role in regulating menstruation...

Summary: Researchers have identified a genetic mechanism that regulates behavioral adaptations to emotional experiences by forming R-loops, unique RNA:DNA structures that activate target genes. The study focused on NPAS4, a gene implicated in stress and drug addiction, showing how blocking R-loops prevents maladaptive behaviors like cocaine seeking and stress-induced anhedonia...