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A transmissible cancer is a cancer cell or cluster of cancer cells that can be transferred between individuals without the involvement of an infectious agent such as an oncovirus. [ 1 ] [ 2 ] The evolution of transmissible cancer has occurred naturally in other animal species, but human cancer transmission is rare. [ 2 ]
It may also cause complications during pregnancy. [1] Trichomoniasis is a sexually transmitted infection (STI) most often spread by vaginal, oral, or anal sex. [1] It can also spread through genital touching (manual sex). [1] Infected people may spread the disease even when symptoms are absent. [2]
Bacteria involved in causing and treating cancers. Cancer bacteria are bacteria infectious organisms that are known or suspected to cause cancer. [1] While cancer-associated bacteria have long been considered to be opportunistic (i.e., infecting healthy tissues after cancer has already established itself), there is some evidence that bacteria may be directly carcinogenic.
According to a new study, cancer risk may have more to do with lifestyle, not genetics, in as many as 90 percent of cases. %shareLinks-quote="Cancer risk may have more to do with lifestyle, not ...
Because chronic viral hepatitis is so common, and liver cancer so deadly, liver cancer is one of the most common causes of cancer-related deaths in the world, and is especially common in East Asia and parts of sub-Saharan Africa. [citation needed] Human papillomaviruses (HPV) also cause many cancers.
Risk factors such as a person's background; lifestyle and environment are known to increase the likelihood of certain non-communicable diseases. They include age, gender, genetics, exposure to air pollution, and behaviors such as smoking, unhealthy diet and physical inactivity which can lead to hypertension and obesity, in turn leading to increased risk of many NCDs.
Lung cancer has the highest mortality rate in comparison to other forms of cancer, with the leading cause of development due to smoking. [27] The number of smokers in China is rapidly increasing with tobacco killing approximately 3000 people each day. [27] The diagnosis of lung cancer is most common within the 50–59-year age bracket. [26]
The cells of those born male contain an X chromosome and a Y chromosome that make a pair and give instructions on which genes should be expressed in the body, the researchers said.