Health News - Science and Medicine Articles

How does caffeine affect sleep?

By Louise Bond published 2 February 23

It may boost alertness and concentration, but how does caffeine affect sleep?

DNA molecular structure with sequencing data of human genome analysis on black background

Dozens of genes linked to thyroid disease risk in largest study of its kind

By Carissa Wong published 2 February 23

112 genes were linked to thyroid conditions in a large genomic study.

Tired woman is trying to drink coffee, but misses pouring it into her cup and is sleeping with her head on the counter

Does coffee really give you an 'energy boost'?

By Emma Beckett published 1 February 23

Coffee may make you less drowsy, but it doesn't really "energize" the body.

illustration of a bacterial cell, resmembling the fuzzy top of a cattail with thin filaments extending from one end

Eye drop product may be tied to cluster of drug-resistant bacterial infections, CDC says

By Nicoletta Lanese published 1 February 23

A specific brand of eye drops may potentially be linked to a cluster of serious bacterial infections in the U.S.

man walking his dog in a snow blizzard at dusk

Why are heart attacks more common in winter? A cardiologist explains

By Lou Mudge published 1 February 23

Colder weather can trigger a number of physiological changes that may increase the risk of a cardiac event.

10 surprising facts about the 'mind-control' parasite Toxoplasma gondii

By Harry Baker published 1 February 23

T. gondii is one of the most common infectious parasites on Earth, but it is also one of the most interesting to learn about.

woman laying on her bed with restless legs syndrome

Restless legs syndrome: Causes, symptoms and treatment

By Anna Gora last updated 1 February 23

Restless legs syndrome is a nervous system condition that causes an intense urge to move the legs.

MRIs showing various cross sections of a human brain

Similar brain 'thinning' seen in older adults with obesity and people with Alzheimer's

By Nicoletta Lanese published 31 January 23

A new study links obesity to patterns of brain tissue loss that overlap with those seen in Alzheimer's disease.

young child sits at a dining table surrounded by adults who laugh and clap for her as she blows out birthday candles on a cake.

What is the key to happiness? We look at the science behind it.

By Anna Gora published 31 January 23

From social connection to physical activity, is science any closer to finding the key to happiness?

A close-up of a human eye. Seeing is one of the human senses

The five (and more) human senses

By Alina Bradford, Ailsa Harvey last updated 31 January 23

Reference There are five basic human senses: touch, sight, hearing, smell and taste. Other senses also help us understand and perceive the world around us.

Reference

Close-up of a man sitting in a circle during group therapy with his hands clasped.

Social anxiety disorder: Causes, symptoms and treatment

By Kim Ann Zimmermann last updated 31 January 23

Social anxiety disorder causes significant discomfort about social interactions.

photo shows a saline drip in the foreground and a blurred out image of a child in a hospital bed in the background

COVID-19 is a leading cause of death among US children and teens, study shows

By Nicoletta Lanese published 30 January 23

An analysis of mortality data shows that COVID-19 ranks as a leading cause of death among children and teens.

illustration of a human arm with the palmaris longus muscle highlighted in red

10 body parts that are useless in humans (or maybe not)

By Nicoletta Lanese published 27 January 23

There's some debate around which human body parts are useless and which aren't.

Illustration of neurons depicted in grey-blue with red light to signify action potentials

Brain cells gone haywire during sleep may lead to chronic pain, mouse study suggests

By Nicoletta Lanese published 26 January 23

A mouse study hints at why chronic pain and poor sleep are linked.

woman using one of the best electric toothbrushes

The 10 best electric toothbrushes 2023 for a deeper clean

By Joanne Lewsley last updated 26 January 23

Buying Guide The Live Science team has tested a number of the best electric toothbrushes, from budget-friendly options to AI-integrated technology.

Buying Guide

Insomnia: Causes, symptoms and treatment

By Rachael Rettner last updated 26 January 23

Insomnia is a sleep disorder that makes it difficult to fall or stay asleep.

An ant drinking water pooling on a leaf.

Ants can detect the scent of cancer in urine

By Jennifer Nalewicki published 25 January 23

Ants use their antennae to sniff out cancer

a scientist's hand, covered by a purple glove, holds a petri dish with visible e. coli colonies growing on it

Antidepressants could fuel the rise of superbugs, lab dish study suggests

By Nicoletta Lanese published 25 January 23

A lab study suggests that antidepressants may push bacteria to become superbugs.

Choline: Sources, benefits and deficiency

By Lou Mudge published 25 January 23

Choline is an essential nutrient that plays a role in metabolism and brain development.

Can't sleep? An expert reveals why anxiety may be worse at night

By Louise Bond published 25 January 23

Experiencing anxiety at night can interfere with sleep.

Health

Browse Categories

Latest