This is more that a flawed study, but a serious failing of comprehension. The assertion in more detail is that IGF-1 in meat causes illness at a predictable rat

This is more that a flawed study, but a serious failing of comprehension. The assertion in more detail is that IGF-1 in meat causes illness at a predictable rate, but exercise causes large spikes in IGF-1 while being associated with a drop in cancer risk. Clearly the correlation between IGF-1 is not as simple as this study asserts.