I found this article with links to some interesting papers:
- Chewing is somehow connected with memory, and not chewing causes decreased memory performance. Soylent has no chewing; therefore a diet solely of Soylent could lead to decreased memory performance.
- Soylent is so finely powdered that it hits the body all at once, instead of being absorbed slowly. Thus it has a relatively high glycemic load. So Soylent consumption could lead to type 2 diabetes.
Not mentioned (probably because the article’s author didn’t buy Soylent) is how hard the powder is to measure out; I often end up making Soylent clouds, which in the worst case could make a dust explosion.
I’m not qualified to judge these claims, but it would be nice to a crunchy-bar form of Soylent, both for convenience in measuring (i.e. - no measurement needed) and these possible health reasons.