genetics

LA police officer accused of 2 rapes in past 4 years

A Los Angeles police officer has been arrested on suspicion of committing two rapes over the past four years -- the oldest of which was linked to him through DNA records while he was being investigated in the other case, prosecutors say.

Lifestyle can lower dementia risk, study says

A good diet and ample exercise don't just help your waistline. Healthy lifestyle factors may also help lower your risk of dementia, even if you have a higher genetic risk, according to a study published Sunday in the medical journal JAMA.

CRISPR gene-edited babies may be at increased risk of early death

Our genomes contain two copies of the CCR5 gene. It is known that people who carry two defective copies of this gene are highly resistant to HIV. But this double mutation of the CCR5 gene, which a Chinese scientist intentionally edited into human embryos last year, is also associated with a 21% increased risk of dying early, a new study showed.

Genetically modified virus saves teen's life

Isabelle Carnell-Holdaway, 17, has faced not one but two unrelenting threats to her life. Diagnosed at 11 months of age with cystic fibrosis, the progressive genetic disease that causes lung infections and breathing impairment, Isabelle has also combated an on-again, off-again infection caused by antibiotic-resistant bacteria since age 8.

Dynamic duos: Why science loves twins

One of the broadest studies of twins in the United States suggests that our genes tend to influence the diseases that afflict us more than where we live, according to research published Monday in the journal Nature Genetics.