University of Oxford researchers released a study indicating that drinking even light amounts of alcohol increases a person's risk of dementia as they age. File Photo by Bill Greenblatt/UPI | License Photo

Drinking any amount of alcohol likely increases a person's risk of dementia, a new study says.

Even light drinking -- once viewed as protective -- is unlikely to lower dementia risk, and that risk increases with the quantity of alcohol a person consumes, researchers reported Tuesday in the journal BMJ Evidence Based Medicine.

Every additional one to three drinks a week came with a 15% higher dementia risk, according to the study.

The results challenge earlier studies that found a potential protective effect for light drinking against dementia, researchers noted.