http://www.nestlenutritionstore.com/departments/therapeutic-...
For the truly hardcore, you can also buy complete sources of intravenous nutrition. Expect to pay hundreds of thousands a year for this extreme productivity boosting option.
> Soylent is not the first drink with calories in it, nor was Google the first search engine. There are many liquid diets. You'd probably be surprised how long you can survive on just cow's milk. No one says 'solid diets exist already' when someone makes a new food. I don't see how the viscosity makes up an entire category. I considered Ensure but found it much too expensive, low calorie, unpalatable, and an ingredient make up that was far from complete or optimal.
> The goal of soylent is to make something ideal, not just a quick shot that will get rid of hunger for a few hours. I need something that allows me to run and lift and think, not just survive, and something considerably cheaper than normal food. A big part of soylent is its personalization as well. There is no 2000 calorie human. If you want an ideal diet you have to personalize it.
http://discourse.soylent.me/t/comparing-soylent-to-existing-...
The bones holding your teeth get a 'workout' when you chew, helping to keep them strong. The saliva produced while chewing is also beneficial, helping to clear food particles from your mouth and wash away bacteria so there may be less plaque buildup and tooth decay.
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Note that saliva also contains enzymes to break down food, and if you only drink Soylent I doubt you produce much saliva for digestion.
I admit I don't know about the enzymatic action of saliva. I am not sure how important the loss would be if there's not large pieces of complex food to break down.