I love the idea of Soylent, but I'm super wary of the risks. The wrong ingredient mix here could have significant impacts 10+ years down the line. The past 20 years of science is starting to show some very strong evidence that too many antioxidants prevent cancer cells that otherwise wouldn't proliferate from dying, and too much of many types of vitamins and nutrients feeds tumorigenesis -- leading to faster-growing and more aggressive cancers.

For references, look up the SELECT trial (vitamin E and omega-3 supplements significantly increased prostate cancer rates), the ATBC trial (beta-carotene, an antioxidant, significantly increased lung cancer rates), the CARET trial (Vitamin A and beta-carotene significantly increased lung cancer rates), the Cochrane Database trials reviews in 2004 (vitamin A, C, E and selenium supplements increased intestinal cancer mortality)...