Warren Taylor, Lennox Head
Mr Olsen (Letters, September 24) discusses a paper by Séralini et al which purports to discover that feeding rats GM food causes them to get cancer.
It is in fact a poorly done study and deeply flawed paper by a group that is prejudicially antithetical to GM foods.
With groups of only 10 per variable, complicated design and no statistical perception, along with cherry-picking of what results they did get while ignoring the results they did not like, they allowed themselves to make headlines while in fact distributing non-truth.
For a full discussion of the faults: http://scienceblogs.com/insolence/2012/09/24/bad-science-on-gmos-it-reminds-me-of-the-antivaccine-movement/ for a long version and http://news.discovery.com/earth/gm-corn-tumor-study-120920.html for a short version.
What this study and the monopoly of Monsanto that similarly distorts the science shows is we need a much strengthened public science sector that can do good studies without prejudice. Paying attention in science class and having a look around for various different views on the internet would not hurt either.