Snus is a type of smokeless tobacco originating from and popular in Sweden and other Scandinavian countries. It differs from moist snuff or chewing tobacco in that it is made from steam-cured tobacco leaves, rather than fire-cured ones, and its health effects are markedly different, with epidemiological studies showing lower rates of cancer and other tobacco-related health problems than cigarettes, American "chewing tobacco", Indian gutka or African-type tobacco products. Prominent Swedish brands are Swedish Match, General, Ettan, and Tre Ankare. In many Scandinavian countries, snus comes either in loose powder form, to be pressed into a small ball (called "baking" the snus) by hand or with the use of a special tool, or in small bags (called "portioned snus" form). Both are suitable for placing under one of the lips, most often the upper. Portioned snus is in particular a popular type because it keeps loose tobacco from becoming stuck between the user's teeth; they also produce less spittle when in contact with mucous membranes inside the mouth which extends the usage time of the tobacco product. However, loose form snus tends to deliver more nicotine than portioned form.