Search results
Results from the WOW.Com Content Network
Heterothermy or heterothermia (from Greek ἕτερος heteros "other" and θέρμη thermē "heat") is a physiological term for animals that vary between self-regulating their body temperature, and allowing the surrounding environment to affect it.
HIV does not directly cause cancer, but it is associated with a number of malignancies, especially Kaposi's sarcoma, non-Hodgkin's lymphoma, anal cancer and cervical cancer. Kaposi's sarcoma is caused by human herpesvirus 8. AIDS-related cases of anal cancer and cervical cancer are commonly caused by human papillomavirus.
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.
Worldwide, approximately 18% of cancer cases are related to infectious diseases. [9] [60] This proportion varies in different regions of the world from a high of 25% in Africa to less than 10% in the developed world. [9] Viruses are the usual infectious agents that cause cancer but bacteria and parasites also contribute. Infectious organisms ...
Worldwide, approximately 18% of cancer deaths are related to infectious diseases. [3] This proportion ranges from a high of 25% in Africa to less than 10% in the developed world. [3] Viruses [66] are the usual infectious agents that cause cancer but bacteria and parasites may also play a role. Oncoviruses (viruses that can cause human cancer ...
Healthy individuals can be infected with the virus and show no signs or symptoms, due to the immune system's ability to keep the infection in check. Infection is of particular concern to the immunocompromised. Cancer patients receiving chemotherapy, AIDS patients, and organ transplant patients are all at a high risk of showing signs of infection.
The World Health Organization's International Agency for Research on Cancer estimated that in 2002, infection caused 17.8% of human cancers, with 11.9% caused by one of seven viruses. [7] A 2020 study of 2,658 samples from 38 different types of cancer found that 16% were associated with a virus. [ 8 ]
Since 1% to 3% of infected individuals are likely to develop gastric cancer, [109] H. pylori-induced gastric cancer is the third highest cause of worldwide cancer mortality as of 2018. [110] Infection by H. pylori causes no symptoms in about 80% of those infected. [111] About 75% of individuals infected with H. pylori develop gastritis. [112]