Two forms of vitamin A are available in the human diet: preformed vitamin A (retinol and its esterified form, retinyl ester) and provitamin A carotenoids [1-5]. Preformed vitamin A is found in foods from animal sources, including dairy products, fish, and meat (especially liver).
Rabbit tobacco can be used medicinally in several ways. Smoking the leaves is good for sinusitis, head colds, and congestion. In hot teas, it is used to treat sore throats, fevers, diarrhea, colds, flu, pneumonia, asthma, and coughs, as well as a mild nerve sedative, a diuretic, and an antispasmodic.
Chewing tobacco facts. 1  Smokeless, snuff, or chewing tobacco contains nicotine as well as many known carcinogens (cancer-causing substances). 2  More nicotine is absorbed by chewing tobacco use that by smoking a cigarette. 3  Chewing tobacco use is a risk factor for the development of oral cancers and precancers. Other health risks of chewing tobacco include gum disease, tooth decay and tooth loss, and possible links to other cancers and cardiovascular disease. 2  Products that are designed to help smokers quit can also be used to help quit chewing tobacco use.