A new study finds indoor tanning significantly increases a person's risk for non-melanoma skin cancer.

Researchers found at least 170,000 cases of these types of skin cancer can be linked to tanning beds every year.

They say people who use indoor tanning are 67 percent more likely to develop a serious, non-melanoma form of skin cancer known as squamous-cell carcinoma.

That's compared to people who have never used a tanning bed.

Researchers say the risk of skin cancer was highest for people who started using indoor tanning before the age of 25.

Researchers say previous studies have linked indoor tanning to malignant melanomas.

But there is limited research on the link between non-melanoma skin cancer and indoor tanning.

Researchers say non-melanoma skin cancer is the most common of all human cancers.