Patients with irritable bowel syndrome who follow individualized diets based on food sensitivity testing experience fewer symptoms, say researchers. Their study is among the first to provide scientific evidence for this medication-free approach to a debilitating condition.
Recently, scientists have been exploring the genetic signatures of adaptation in several indigenous cold-adapted human populations. Now, a new study has identified new signals of adaptation across multiple genes and exploring a rich demographic history. By performing extensive analyses on DNA sequencing data for two North-Central Siberian populations, the Nganasan (nomadic hunters) and Yakut (herders), they have been able to infer the most comprehensive demographic and adaptive history.