In general in biology there is a simple criteria about the interest of an article: - If it is tested in vitro, not only those results do not translate to human

In general in biology there is a simple criteria about the interest of an article: - If it is tested in vitro, not only those results do not translate to human health issues (it is not in a living tissue which is a complex milieu, not simply the juxtaposition of cells), but commercial cell lines are not representative of normal cells, as they reproduce indefinitively. - If it is tested on a mammalian animal model, it better but obviously mammalian species are different from each other at the organe level (for example the tail is used for thermoregulation in mouses). - The best thing for evaluating any human impact, is a phase III of a clinical study.