The Dangers of Sun Tanning

There is no such thing as a safe tan.

A suntan is an evolutionary adaptation where melanin builds up in skin cells to protect against DNA damage from sunlight.

For many Kiwis, a tan from outdoor exposure is common. UV radiation triggers inflammation, immuno suppression, and tanning, while also speeding up skin aging.

UV light causes DNA damage in cells, prompting the body to combat and repair the damage. Melanocytes protect the skin by producing more melanin which darkens or ‘tans’ the skin.

However, it’s important to remember tanning only occurs after this initial DNA damage, which can lead to cancer. This damage can cause basal cell carcinomas (the most common skin cancer), squamous cell carcinomas, or melanomas (the most dangerous).

While no tan is truly safe, it doesn't mean we have to avoid the sun entirely. Just be sure to take precautions to protect your skin from UV exposure.