No matter how we want to say it, chemicals are inevitable. The said plants and herbs people consume even contains more and higher dose of phytochemicals ranging from Alkaloids to others. If not for dosage, the dangerous effects can be devastating.
ANOVA is one statistical tool that most of my associates love using Especially in cases of disparity and variance in values. It's much more friendly in this regards.
Most of my research works are actually Published under open Access, except textbook versions - the Publishers would hardly let it out for free...lol.