Why are tobacco alcohol and ultraviolet radiation listed as carcinogens in the table?

Tobacco, alcohol, and ultraviolet (UV) radiation are all listed as carcinogens in the table because they have been shown to cause cancer in humans.

Tobacco

Tobacco smoke contains over 7,000 chemicals, many of which are known carcinogens. These chemicals include tar, arsenic, formaldehyde, and benzene. Tobacco smoke damages the DNA in cells, which can lead to mutations that cause cancer.

Alcohol

Alcohol consumption has been linked to an increased risk of several types of cancer, including liver cancer, esophageal cancer, and head and neck cancer. Alcohol damages the cells in the liver and esophagus, making them more susceptible to cancer. Alcohol also stimulates the production of estrogen, which can increase the risk of breast cancer.

Ultraviolet (UV) radiation

UV radiation from the sun or tanning beds can damage the DNA in skin cells, which can lead to skin cancer. UV radiation can also cause premature aging of the skin.

The World Health Organization (WHO) has classified tobacco, alcohol, and UV radiation as Group 1 carcinogens, which means that they are known to cause cancer in humans.