The World Health Organization does not recommend them. According to studies, use of tanning beds caused a 20% increased risk of developing melanoma, the deadliest form of skin cancer.
A recent article by Maria Cheng of the Associated Press said that tanning beds and ultraviolet radiation are definite causes of cancer, alongside tobacco, the hepatitis B virus and chimney sweeping. Vincent Cogliano, a cancer researcher, hopes that culture changes so that teens, especially, don't think they need to use sunbeds to get a tan.
The American Cancer Society advises people to try bronzing or self-tanning creams instead of beds.