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Think twice before getting that tattoo: It can cause your body to overheat

Think twice before getting that tattoo: It can cause your body to overheat
Applying a tattoo typically requires puncturing the skin with needles 50 to 3,000 times per minute, at a depth of 1-5 millimetres which could result in sweat gland damage. @Shutterstock

A new study says that tattoos may impair natural sweating, potentially causing the body to overheat if the tattoos cover a large area of the body.

Written by Jahnavi Sarma |Updated : December 3, 2020 5:47 PM IST

Researchers from SMU (Southern Methodist University) in the US have found that tattoos may impair natural sweating, potentially causing the body to overheat if it covers a large area of the body. In the study, published in the Journal of Applied Physiology, the research team outlined the connection between tattoos and damage to sweat glands. Their study of tattooed skin and adjacent non-tattooed skin on the arms of an evenly-divided group of men and women found that the inked sections of skin had reduced sweat rates. That's a potential problem because sweating is how the body cools itself and regulates its temperature.

Tattoos impair function of sweat glands

According to researchers, any damage to eccrine (sweat) glands within the skin can impair sweating response and potentially increase the risk of overheating if the damage covers a large enough body surface area. Eccrine sweat glands, which are found in most skin across the body, produce sweat to cool the body. The human body must regulate its temperature for survival. In the study, the research team determined sweating rates in the upper and lower arms of people with tattoos by comparing at least 5.6 square centimetres of tattooed skin with adjacent non-tattooed skin. Ten people - both men and women - participated in the study.

Nerve signals to sweat glands are not affected by tattoos

All the volunteers wore a special tube-lined suit that circulated hot water in excess of 120 degrees Fahrenheit for 30 minutes to increase core temperatures and measure the level of sweating. Inked and non-inked areas of skin both began to sweat at around the same time. But inked areas ultimately produced less sweat than areas without tattoos. The findings suggest that even though nerve signals to sweat glands weren't affected in tattooed skin, the sweat glands themselves were likely damaged during tattooing.

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Collateral effects of tattooing

Tattoos are made permanent by injecting ink through the thin layer of outer skin into the middle layer of skin known as the dermis, which contains connective tissue, hair follicles and sweat glands. Applying a tattoo typically requires puncturing the skin with needles 50 to 3,000 times per minute, at a depth of 1-5 millimetres which could result in sweat gland damage. These data indicate that the collateral effects of the tattooing process negatively impact eccrine sweat gland function and could be considered a potential long-term complication or side effect of this cosmetic procedure.

Other health risks of getting a tattoo

If you decide to get a tattoo, you must be aware that you may get some skin infections and other complications. Allergic reactions are common as are formation of scar tissues. Sometimes, if you get your tattoo in unhygienic surrounding, you may be at risk of bloodborne diseases like tetanus, hepatitis B and hepatitis C. It may also cause swelling or burning in the affected areas if you get an MRI done and can also interfere with the quality of the image.

In most cases, proper treatment can help you overcome these problems. But it is better t be safe than sorry. Getting a tattoo is risky business and it may be best to avoid it.

(With inputs from IANS)