
© JGI/Tom Grill/Getty Images/Blend ImagesEvolution appears to favour women having children at a younger age.
New study suggests evolution is still acting on contemporary humans,
although over many generations and very weakly As humans continue to evolve,
natural selection appears to be favouring higher body mass index (BMI) in men and an earlier age for starting a family in women, research has revealed.Researchers used data from the UK Biobank, a large genetic and health database of half a million British people aged 45 and over, to look at how numerous traits from body mass index to height and birth weight, as well as particular genetic variations associated with such traits, are linked to the number of children individuals had during their lifespan.
But scientists note that the effects are weak and that it will take many generations before significant changes are seen in humans. In addition, they stress it is not clear if natural selection is acting directly or indirectly on the traits.
"We wanted to try to understand what types, and [to] quantify, the evolutionary forces that are affecting contemporary human traits, including height and BMI," said Jaleal Sanjak, a co-author of the research from the University of California, Irvine.
"And also characterise whether selection was pushing the population in one direction or another, or favouring intermediate values or extreme values," he added.
Comment: Damned if you do, damned if you don't. If the remedies work they'll be subject to regulation, increase in price and still side-lined in favour of pharmaceuticals. If they don't work they'll be dismissed as snake-oil. Guess the FDA doesn't have to make up its mind. They just have to label homeopathy as "bad" and let people choose the narrative they like to justify it.
The idea that there could be poor manufacturing processes that lead to some form of contamination in a homeopathic remedy certainly isn't beyond the scope of the possible. And certainly everyone wants to know that the products they're taking are safe. But put within the context of the FDA, and other government agencies, ongoing battle against homeopathy, this just seems like another excuse to regulate it out of existence.
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