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Using an intervention in addition to usual care, a highly self-selected population - 5% of the original cohort and likely to be the most highly motivated - did not achieve a statistically significant reduction in Cardiovascular Risk. The parameters which did show improvement would likely be those attributable to inclusion bias, and not due to the intervention itself.
I think that no effect has been shown here and I don't think even the "marginal clinical benefits" in the authors' conclusion can be justified.