. This puts them at risk of iron deficiency anaemia, a “global” and “totally under-recognised” problem, says Hilary Critchley, a gynaecologist and academic at the University of Edinburgh., have hidden the scale of the problem, but it is also bigger than it used to be. Previous generations spent more time pregnant and undernourished, so they had fewer cycles.
In most mammals, this preparation doesn’t start until the embryo arrives. Which creatures get periods, then, “seems to be a question of whether the species ‘feels the need’ to prepare for the arrival of an embryo before the embryo is there,” says Wagner. A few other species feel the need, too: some primates, a few bats and the elephant shrew . Contrary to popular belief, dogs don’t have periods – their bleeding is from their vaginas, not their wombs.
Unsurprisingly, then, it caused a huge stir when scientists discovered in 2016 that there is another species in the menstruation club: the common spiny mouse,and which, a bit like a lizard, can lose its skin to escape predators. This little rodent has periods, too. Temple-Smith believes that the spiny mouse is overall the best model of human menstruation. “It’s getting harder and harder to justify work on primates, and the cost is phenomenal,” he says. Instead researchers use the, where a regular mouse has its ovaries removed, and is subjected to hormones that make it bleed from the womb. “I think if you’re honest about it, you need to have a natural model that works without the need to pump [it] up with progesterone and oestrogen.”.
But so far organoids only include one endometrial cell type. “Organoids are a good start,” says Hapangama, “but the endometrium is a multicellular organ.” Turco and Vankelecom are now trying to incorporate more cell types, while Hapangama is working on a complete system that even includes blood vessels.”, an organoid combined with layers of another endometrial cell type, first reported last year by a team including Jan Brosens, a clinician and scientist based at the University of Warwick.
Fix periods? Why can't some women just get on with life in their bodies? We're animals, take what you got and respect what your natural bodies do for the human existence. The softest of women in history exist today and it's embarrassing to their grandmother's mothers.
Will we soon be able to fix erections because those things can get out of control sometimes and go entering places they don’t have permission for
What? IS It Men's Turn? 🤣😂🤣
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