This 2017 comment, written by leaders in the fields of cancer and ketogenic diet research, responds to a review by Nicole Erickson et al. that claims evidence supporting the use of the diet for cancer treatment is lacking. The comment authors argue the ketogenic diet is an effective cancer therapy that functions through multiple mechanisms. They also note the diet has limited risk and is an effective adjuvant therapy to other treatments. They conclude the apparent lack of evidence in support of the diet merely results from the preliminary but rapidly advancing state of keto research.

To run group classes without compromising our hallmark laser focus and commitment to the athlete, the trainer has to learn to give each member of the group the impression that he is getting all the attention he could get in one-on-one training, and that requires tremendous training skill. … All the demands on the trainer skyrocket in this situation, however. Attention, enthusiasm, voice projection, and engagement all have to escalate. It is an acquired skill — an art, really.