Any switch designed to be operated by a person is generally called a hand switch, and they are manufactured in several varieties: Toggle switches are actuated by a lever angled in one of two or more positions. The common light switch used in household wiring is an example of a toggle switch.
1 In 2008, the results of a clinical study showing the positive effects of dandelion were published in the International Journal of Oncology. 2  Dandelion tea was shown to decrease breast cancer cells. 3  Researchers tested dandelion tea on prostate cancer cells and found similar results. In 2008, the results of a clinical study showing the positive effects of dandelion were published in the International Journal of Oncology. 2  Dandelion tea was shown to decrease breast cancer cells. 3  Researchers tested dandelion tea on prostate cancer cells and found similar results.
A few studies suggest that decaffeinated teas do have potential anti-cancer effects. For instance, one study found that smokers who drank four cups of decaffeinated green tea daily for four months had significantly reduced DNA damage, as shown by urine tests.