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91色情片

Discover the latest health news, scientific discoveries and big ideas about the human body and treating diseases, covid-19, diet, fitness, exercise, wellness and how to live a healthy life.

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

Decreasing the amount of oxygen that IVF-conceived embryos are developed in could improve outcomes, such as reducing the risk of low birth weight

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The breathalyser, which detects a molecule called acetone

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Phone breathalyser can detect when your body switches to burning fat

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Inhaling high-dose CO2 clears Alzheimer’s proteins from the brain

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Supplement that binds to microplastics may remove them from our body

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Transmission electron micrograph of human neutrophils, immune cells that can turn rogue with age

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Restoring ability to remove zombie cells may keep us sharp as we age

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Coloured diffusion tensor imaging (DTI) magnetic resonance imaging (MRI) scan showing white matter fibres in the brain of a patient with Alzheimer's disease. Alzheimer's is a neurodegenerative disease where atrophy (shrinking) of the brain leads to memory loss, confusion, personality changes and ultimately death. Diffusion tensor imaging measures the direction of water diffusion, which in the brain reveals the orientation of nerve fibres. Red fibres have a left to right orientation, green a front to back orientation and blue an up and down orientation.

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Next-generation Alzheimer’s drug reduces risk of serious brain bleeds

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Mandatory Credit: Photo by Jasper Jacobs/Belga/Shutterstock (16985880bv) Norwegian Soren Waerenskjold of Uno-X Mobility sprints to the finish of the stage 7 of the 2026 Tour de France cycling race, a stage of 175km from Hagetmau to Bordeaux, on Friday 10 July 2026. The 113th edition of the Tour de France starts on Saturday 4 July in Barcelona, Spain, and will finish in Paris, France on the 26th of July. Cycling Tour De France 2026 Stage 7, Hagetmau, France - 10 Jul 2026

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How elite athletes have started training to compete in extreme heat

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A scanning electron micrograph of immune cells called microglial cells (round) ingesting specialised cells called oligodendrocytes (branched) that maintain the myelin sheath around nerves, which is thought to occur in multiple sclerosis

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Best treatment for multiple sclerosis may be antivirals

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Nicotine pouches may cause receding gums

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Alzheimer’s, stroke, depression: The preventative power of sauna

Sustained heat stress is bad for our health and can be deadly. But we鈥檙e discovering that heat therapies like sauna, when used in the right way, have surprisingly wide-reaching benefits for health

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Game that reduces dementia risk may clear amyloid from men’s brains

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Four children with terminal brain cancer saved by new cell therapy

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Resuscitated retinas respond to light 10 hours after death

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Injection halves risk of chromosome error common in older human eggs

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