How are they similar? Kenneth Anderson at The Volokh Conspiracy writes:
I have shaved my head completely, as I have discovered from long experience that even if it doesn’t help me discover my spiritual side, it weirdly helps me concentrate. I highly recommend it. I have much coffee, good stuff from Antigua Guatemala. Yerba mate from Paraguay. I have my extralight olive oil re the Seth Roberts diet – to which, although I realize I’m just bragging here – I sincerely credit the loss of 25 pounds [emphasis added] and a wholly unmedicated cholesterol score last week of 128 total and 66 good (!).
All three help you concentrate. (SLD helps you not be distracted by hunger.)
Unfortunately, Mr. Anderson isn’t quite up to speed on what constitutes a healthy cholesterol level. His is in the range of increased mortality. Low cholesterol kills: https://mangans.blogspot.com/2008/10/low-cholesterol-kills.html
Everything in moderation.