What makes one person seek out the spiciest chillis, while another enjoys only bland foods?

People could perceive your post-surgery personality differently, too, new research suggests.

A new type of HIV treatment involving the transfusion of a synthetic antibody has shown startling trial results.

Men are up to five times more likely to commit a sex crime than the average male if their father or brothers have been convicted of a serious sexual offence.

Violet Pietrok is two minutes older than her twin sister. She was born with a Tessier Cleft, a rare condition that left a fissure in her skull, so the facial bones didn't fully come together.

Sexual behaviour is notoriously difficult to measure, and the findings often dubious. Rowan Pelling meets the Cambridge academic who is analysing our most intimate secrets.

Why do we laugh? The obvious answer is that something is funny. But if we look closer at when and how laughter occurs in ordinary social situations, we see that it's not so simple.

A hospital known for pioneering face transplant surgery has carried out its most complex operation yet, reconstructing a man's lower face and neck.

A new method that screens embryos for more than 200 disorders is already making dreams come true, reports Sarah Knapton from London.

Who volunteers to have sex in a laboratory? I was struck by this question when reading about an experimental study of ideal sexual positions for men with back pain.

On the quest to find true love, it is a well-used adage that one must kiss a few frogs before meeting a prince. And it would appear this theory is accurate.

"The matter is not as simple as plain stupidity. Some anti-vaxxers are not that stupid, and some stupid people are not anti-vaxxers. There is something more subtle going on."

Last year scientists declared we had reached a "peak beard" situation. Bearded hipsters, they said, would start picking up their razors in the realisation that their facial hair was no longer unique.

A small NZ beauty company has recorded a breakthrough in scientific tests.

Scientists believe the gene Plexin D1 tells fat to gather around the middle, rather than the bottom and thighs.

Dug out of a car park five centuries after his mutilated body was unceremoniously interred, England's Richard III will finally be given a burial fit for a king.

The genes linked with autism are thought to promote higher intelligence, scientists believe.

A bizarre experiment which saw scientists keep the brains of fruit flies alive in a dish for six days may hold the key to explaining - and eventually treating - jet lag.

Why all hipsters look the same - scientists reveal the maths behind beards, bicycles and man buns.

Just about everybody has one raging narcissist to deal with, sooner or later - on the job, in social situations or (God forbid) in the home. How did he get this way, we wonder?

Benevolent sexism makes men more smiley when they interact with women, and that's bad news.

The lives of tens of thousands of new mothers around the world could be saved by a simple, hand-held, British-made device.

The first case of a mother acting as a surrogate to help her son become a parent raises deep questions about the changing nature of families, says Cristina Odone.

New British research linking hormone replacement therapy to ovarian cancer has caused Australian women to become concerned about the treatment, health experts say.

With such opposing looks it's hard to believe this striking pair are sisters. But they are much more than that - they are twins.

Watching TV for more than two hours a day increases the risk of raised blood pressure in children, a study has found.

Italian surgeon Sergio Canavero wants to take the head from someone with an incurable illness and graft it on to a healthy body.

It may seem too good to be true, but a guilt-free chocolate that promises to combat wrinkles and sagging skin has been developed by scientists.