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Woman is standing on bathroom scales with happy smiling face on display, over colored background, top view of feet. Weight measurement and control. Concept of healthy lifestyle, dieting and fitness

Health

Weight loss advice isn't based on good evidence

The orthodoxy in most high income countries is that anyone with a body mass index (BMI) of 25 or more is overweight, but evidence suggests the cut-off point should be a fair bit higher, writes Clare Wilson

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^BHormone replacement therapy.^b Close-up of Hormone Replacement Therapy (HRT) pills in a circular dispenser. HRT pills are synthetic hormones used to treat menopausal women. They counteract the hormone deficiency that occurs at menopause. These pills contain oestrogen, and often progestogen, drugs. HRT helps to prevent ^Iosteoporosis,^i ^Iatherosclerosis^i and ^Iatrophic vaginitis^i (where the vagina becomes thin and dry). Pills are taken daily on a monthly basis to coincide with the menstrual cycle. Adverse effects include nausea, tenderness of the breasts, fluid retention and leg cramps.

Health

Outdated research on HRT is letting people down

Leader

FEATURE CROP ONLY Galileos watercolours of the moon 'By courtesy of the Ministry of Cultural Heritage and Activities (MiBACT), Central National Library of Florence, Ban of Reproduction

Humans

Scientific illustrations illuminate work by Galileo, Einstein and more

Regulars

3D models of the femur and ulnae of Sahelanthropus tchadensis

Humans

Human ancestors may have walked on two legs 7 million years ago

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Chewing gum

Humans

Chewing can increase your body's energy use by up to 15 per cent

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Unlike in other primates, the human voice box has lost small tissue structures called vocal membranes, which may have been involved in the evolution of speech

Humans

Losing parts of our voice box may have helped humans evolve to speak

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Digital restoration of fossil child and adult crania

Humans

Shape of human brain has barely changed in past 160,000 years

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DEWD0X Archaeological Site of Atapuerca. Archaeological Site: Gran Dolina. World Heritage Site. Burgos. Castilla-Leon. Spain.

Humans

Life As Told By a Sapiens to a Neanderthal review: Joyful curiosity

Culture

Illustration of a Neolithic farming village

Humans

Evolution of lactose tolerance probably driven by famine and disease

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Ai chipset with human brain on computer circuit board. Artificial intelligence, Data mining, and Deep learning modern computer technology. Ai CPU concept. 3D Rendering.; Shutterstock ID 1949704300; purchase_order: -; job: -; client: -; other: -

Humans

Mistakenly calling AIs 'sentient' is more dangerous than we think

A Google engineer recently claimed an AI was alive and that it had hired a lawyer. If judges were to accept these claims, it could lead to AIs being frozen in their biased states, writes Annalee Newitz

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Humans

When did humans start making art and were Neanderthals artists too?

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Mind

Why does time fly or drag? How emotions warp our temporal perceptions

Features

Health

Covid-19 news: Moderna’s omicron booster has promising immune response

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Health

Covid-19 news archive: May 2022

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