Conflicts of Interest
A.R.J. and C.M.K. serve on the scientific advisory board for Alzchem. A.R.J. and C.M.K. have consulted with and received external funding from companies who sell certain dietary ingredients, and have received remuneration from companies for delivering scientific presentations at conferences. A.R.J. and C.M.K. also write for online and other media outlets on topics related to exercise and nutrition. The remaining authors declare no conflicts of interest. The companies had no role in the design of the study; in the collection, analysis, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results.