A new test can tell when you’ve been drinking by the chemicals in your hair:
Scientists have developed a range of hair, blood and urine tests which can show how much someone has drunk over the past days, weeks or even months.
Alcohol disappears from the body within hours, but drinking produces chemicals which stay in the body much longer.
…used together, researchers say the new tests could give a complete picture of a person’s drinking habits, showing when someone had last been drinking and whether they are heavy or light drinkers.
This is another solution looking for a problem. Do we really need twelve different ways to tell if someone’s drunk?
And what about personal benefits? Will I grow more hair if I drink more?