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.
The health effects of tobacco are the effects that use of tobacco has on human health. Research has focused primarily on cigarette tobacco smoking. Tobacco use is the single greatest cause of preventable death globally.he health effects of tobacco are the effects that use of tobacco has on human health. Research has focused primarily on cigarette tobacco smoking. Tobacco use is the single greatest cause of preventable death globally.