Indica buds for cancer and sickness. Sativa is used mostly for people who need energy and that will make them high rather than sleepy. It's dependent on what result you want from the oil. The information is all in Rick's book. Keep in mind that the different strain types are for different illnesses. I know people who have taken Sativas for anxiety and it helped tremendously. Indica buds for cancers, however. Thanks to the user who pointed this out.
Never mind what the stupid UDP GOVERNMENT say. You want to be an entrepreneur and export to millions of HOMEOPATHIC HEALTH FOOD STORES around the world, or online, HEMP OIL for fighting and killing cancer cells. Rick Simpson's U TUBE video will teach you how to start. http://www.youtube.com/watch?v=KZXGH6mYr3Y