Having A Tattoo Makes You Sweat Less

If you have tattoos you might get hotter in the summer compared to people without ink. Researchers from Alma College in Michigan collected sweat samples from 10 men, from a tatooed area of their skin, and a non-tattooed area. They found tattooed skin generated significantly less sweat than the non-tattooed skin. Sweat from the tattooed skin also had higher sodium concentration. It's not clear if the findings have any health implications, but study author Maurie Luetkemeier warns not producing enough sweat may cause people with tattoos to overheat.