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Male mammals aren’t always bigger than females

The idea that male mammals tend to be larger than females has been scientific dogma since Darwin. Bigger bodies, the thinking goes, are better in the battle to win the attention of choosy females. Turns out, that dogma may need…

Readers discuss cholesterol treatments and AI

Get low (cholesterol’s version) An experimental genetic treatment called VERVE-101 can deactivate a cholesterol-raising gene in people with hypercholesterolemia, Meghan Rosen reported in “Base editing can lower cholesterol” (SN:…

Genetic study reveals the ancestry of Indians

South Asia is home to one of the world's most diversified populations where around 1.5 billion people, a mash-up of many ethnic identities, languages, religions, castes, and customs reside. The scientists have now revealed a thorough…

The blood holds clues to understanding long COVID

Citations T. Thaweethai et al. Development of a definition of postacute sequelae of SARS-CoV-2 infection. JAMA. Vol. 22. May 25, 2023, p. 1934. doi: 10.1001/jama.2023.8823.C. Greene et al. Blood–brain barrier disruption and sustained…