1). Trim your data prior to analysis, making it easier to focus on analysis.
2). Never perform analysis on the master
copy of your data.
3). Base your hypothesis in theory, not on a hunch (or on the data).
4). Accept that you may not find "significance".
5). Check assumptions BEFORE you analyze your data.
6). Carefully select your analysis.
Arteries and veins is right
You should try to compare some labels of products with the same origin, and then choose some specific products with the lowest elements.
Becoming addcited to drugs or alcohol can often be a sign that a person has problems with the neural wiring in his or her brain. Some people seem to be more susceptible than others. In no case is addiciton which involves these substances useful for the person on a daily basis.
Is this a personal question or is it for a test?