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New Scientist. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

Beyond tired: Why fatigue sets in and how to tackle it

Health

Beyond tired: Why fatigue sets in and how to tackle it

A renewed focus on fatigue in light of long covid means we now have a better understanding of the body-brain pathways that cause it, offering fresh targets for new treatments

Features

Health worker giving a vaccine

Health

Vaccinations and past infections reduce risk of spreading covid-19

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A sleeping man and woman in bed

Health

Some doses of blue light from screens may not affect your sleep

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2009 Margaret Williams, PhD; Claressa Lucas, PhD;Tatiana Travis, BS Under a moderately-high magnification of 6500X, this colorized scanning electron micrograph (SEM) depicted a grouping of Gram-negative Legionella pneumophila bacteria. Please see PHIL 11092 through 11140 for additional SEMs of these organisms, specifically PHIL 11121 for a black and white version of this image. You?ll note that a number of these bacteria seem to display an elongated-rod morphology. L. pneumophila are known to most frequently exhibit this configuration when grown in broth, however, they can also elongate when plate-grown cells age, as it was in this case, especially when they?ve been refrigerated. The usual L. pneumophila morphology consists of stout, ?fat? bacilli, which is the case for the vast majority of the organisms depicted here. These bacteria originated on a 1 week-old culture plate (+/- 1 day), which had incubated a single colony, at 37?C upon a buffered charcoal yeast extract (BCYE) medium with no antibiotics.

Health

Legionnaires’ disease may be cause of mystery pneumonia in Argentina

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In some parts of the world artificial trans fats are added to products like pastries to extend their shelf life at a low cost, but they have been linked to heart disease

Health

Denmark's ban of artificial trans fats saved 1200 lives over 16 years

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X-rays have diagnosed nine people with pneumonia of an unknown origin in the Tucumán province of northwestern Argentina

Health

What we know about the mysterious pneumonia in Argentina

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A vial of the Pfizer-BioNTech Covid-19 vaccine at a clinic inside Trinity Evangelic Lutheran Church in Lansdale, Pennsylvania, U.S, on Tuesday, Apr. 5, 2022. U.S. regulators cleared second booster??doses??of Covid-19 vaccine from??Moderna Inc.??and the partnership of??Pfizer Inc.??and??BioNTech SE for adults 50 and older, making millions more people eligible for the shots as concern grows about a potential new wave of infections. Photographer: Hannah Beier/Bloomberg via Getty Images

Health

US authorises the use of dual-variant covid-19 vaccine boosters

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An artificial intelligence could gauge how much pain a laboratory mouse is in based on its grimaces, potentially aiding the development of pain-relieving drugs

Health

AI that can see pain in a mouse's face could aid drug development

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NHS ambulances at a hospital in London

Health

There are thousands more UK deaths than usual and we don’t know why

Insight

^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

It's time to be clear about the evidence around hormone replacement therapy and let people make up their own minds

Leader

Health

��è��Ƶs home in on genetic causes of uncombable hair syndrome

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Health

Should you take HRT? Here's how to think clearly about the risks

Features

Health

Compression socks may prevent nausea and loose bowels during marathons

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Health

Soy-heavy vegan diet may reduce hot flushes in postmenopausal women

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