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Fertility

The patch, which collects sweat to give wearers' insight into their fertility

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Skin patch that collects sweat could predict ovulation

A patch that measures levels of two reproductive hormones in sweat has shown promise for predicting ovulation in a small study

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Paracetamol use in early pregnancy linked to smaller ovaries and testes

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Early-stage mice embryos developed in 2 per cent oxygen, including the cells' nuclei (blue) and cells that will go on to form the placenta (pink)

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IVF embryos may thrive when grown with less oxygen

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Fluorescence in situ hybridisation (FISH) micrograph of Down's syndrome chromosomes (red) in a foetus' cell nuclei (blue). The FISH technique enables individual chromosomes within the nuclei to be tagged with a fluorescent dye. Here, three copies of chromosome 21 are seen in each nucleus, the cause of Down's syndrome. In a healthy human, each nucleus contains only two copies of chromosome 21. Chromosomes are the parts of a nucleus responsible for carrying the genetic code. Down's syndrome is a genetic disease which causes mental retardation and typically flattened features. It affects around 1 in every 650 babies.

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Injection halves risk of chromosome error common in older human eggs

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Light micrograph of a section through follicles in an ovary. The immature eggs (orange) are surrounded by a fluid-filled cavities (light pink) and granulosa cells (dark pink), which provide immature eggs with nutrients and hormones

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Our fertility window could be extended by making ovaries softer

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Lambs born via IVF using highly immature eggs in major breakthrough

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Ovary identity shift after menopause may contribute to inflammation

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We鈥檝e uncovered a master gene that switches on human development

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D6H4GB Implanted blastocyst, artwork

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Embryos made without sperm or eggs reveal why many pregnancies fail

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Will lab-grown sperm let infertile men have children of their own?

Men who do not produce sperm can鈥檛 be helped by existing fertility treatments, but a start-up is now claiming it can grow their sperm in the lab. Columnist Michael Le Page suspects this technique will have to be combined with gene editing if it is to help many men

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PCOS has been officially renamed PMOS, and it鈥檚 a momentous move

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PCOS postpones perimenopause and allows pregnancies at older ages

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Society

The real reasons birth rates are declining worldwide

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Menstrual pad could give women insights into their changing fertility

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