Human heart
Latest about Heart & Circulation
![Veins and arteries](https://cdn.mos.cms.futurecdn.net/cntqDrY3tkS4UJw7TotEog-320-80.jpg)
Veins and arteries: Facts about our blood vessels
By James Horton published
Reference Veins, arteries and capillaries make up a sophisticated circuit of blood vessels. This provides oxygen, removes waste, and maintains pressure so that our bodies can operate ceaselessly.
![a woman with a new spinal implant (left) walks with the help of a medical provider (right)](https://cdn.mos.cms.futurecdn.net/4CeTFzWCajd7rjo8tJQnCW-320-80.jpg)
A woman would faint whenever she tried to stand. New implant lets her walk.
By Nicoletta Lanese published
The patient has a condition called multiple system atrophy.
![An illustration of red blood cells in plasma](https://cdn.mos.cms.futurecdn.net/LQXPQLvLmSazuTouqsn87d-320-80.jpg)
Why do we have different blood types?
By Tyler Santora published
The disease malaria appears to have influenced blood type prevalence.
![Blood sugar finger prick.](https://cdn.mos.cms.futurecdn.net/khmSRp9EZHnhu3spMeZkrB-320-80.jpg)
Insulin resistance: Risk factor for heart disease and diabetes
By Tia Ghose, Natalie Grover published
Reference Insulin resistance is a condition where the body's cells don't properly respond to the hormone insulin, which tells cells to take in blood sugar and use it for fuel.
![Close up of drink can tops.](https://cdn.mos.cms.futurecdn.net/a8dymSPvoryVicrKSHXCuU-320-80.jpg)
Man's energy drink habit lands him in the hospital with heart failure
By Rachael Rettner published
The findings add to a growing body of evidence linking energy drink consumption with heart problems.
![close-up of a patch of psilocybin mushrooms](https://cdn.mos.cms.futurecdn.net/hiP2ud53Apg2xNB6uZbNe7-320-80.jpg)
'Magic mushrooms' grow in man's blood after injection with shroom tea
By Nicoletta Lanese published
The man spent 22 days in the hospital with a severe infection.
![AA battery on a white background.](https://cdn.mos.cms.futurecdn.net/b2b6PUbgtDcSYwSvf9nfuh-320-80.jpg)
Man's 'heart attack' was really side effect from swallowed battery
By Ashley P. Taylor published
Whether or not it affects the heart, eating batteries is dangerous.
![Man doing a forearm stretch.](https://cdn.mos.cms.futurecdn.net/zygkYDEsNWkb7xgcnPF5JY-320-80.jpg)
More humans are growing an extra blood vessel in our arm that 'feeds' our hands, study shows
By Mike McRae published
Scientists have found an artery that temporarily runs down the center of our forearms while we're still in the womb isn't vanishing as often as it used to.
Sign up for the Live Science daily newsletter now
Get the world’s most fascinating discoveries delivered straight to your inbox.