YGBFKM, highway-driver edition

Picking your nose may raise the risk of dementia, a study suggests.

Damaging the inside of the nostrils creates a shortcut for bacteria to seep into the blood and travel directly to the brain.

Researchers looked at what happens when the nerve that connects the nose to the brain is exposed to Chlamydia pneumoniae, a normally harmless bug that causes sinus issues.

The study — on mice — found detectable levels of the bacteria in the brain within 72 hours.

Within a month, the rodents developed clumps of a protein plaque linked to Alzheimer’s.