Your DNA Could Affect How Well Your Birth Control Works

New research suggests that people with an uncommon genetic variant break down the hormones in birth control too quickly—which could put them at risk of unintended pregnancy.


This Chinese Researcher Says the First CRISPR Babies Are Here

But the validity of the claim is up for debate.


The Science Behind Why People Have Different Pain Tolerances

Everything from our genes to our psychological makeup can affect our sensitivity to physical pain.


How Fast Can You Expect to Build Muscle Naturally?

An expert trainer explains the role of genetics, muscle memory, and lifestyle when you're trying to gain as much strength as possible—without turning to supplements or steroids.


Scientists Are Starting to Understand Thousands of Rare Diseases That Affect Children

Seventeen years since the first draft of the human genome, our genes are giving up their secrets and bringing hope to parents around the world.


What Are GMOs and Are They Bad for Me?

The question of what a genetically modified organism (GMO) is and whether it’s bad for your health is an especially persistent one.


Carl Zimmer Wants Us To Be Generous About Our Definition of Heredity

But don't shell out any money on epigenetic yoga just yet.


What It Takes for Night People to Become Morning People

A few small lifestyle tweaks can make the shift easier for aspiring early risers.


If Your Cells Continue to Function, What Does it Mean to Die?

"Am I my liver, my stomach, my kidney? All these things still work when I am dead."


The Family That Doesn't Feel Pain

Their genes could lead to treatment options for people with chronic pain.


Why Are We Searching for a 'Gay Gene'?

Some question whether the benefits are overshadowed by the potential risks.