Soylent Powder (v1.6) Glycemic Index: 60
Soylent Powder (v1.6) Glycemic Load: 28.2
Soylent Powder (v1.5) Glycemic Index: 65
Soylent Powder (v1.5) Glycemic Load: 35
Soylent Drink (v2.0) Glycemic Index: 49
Soylent Drink (v2.0) Glycemic Load: 16.7
Soylent Bar Glycemic Index: 55
Soylent Bar Glycemic Load: 13.75
In the early 1980s, researchers published a paper that proposed a methodology for describing carbohydrates not by their structure, but by their impact on plasma glucose - blood sugar.
In order to determine the rate at which a carbohydrate is metabolized into blood sugar - the carbohydrate's glycemic index - a trial is conducted where participants have their blood sugar measured after consuming a mixture of glucose and water. On a later date, participants consume a quantity of a test substance (in this case, Soylent). Following consumption, participants' blood sugar levels are again recorded. The data from the two tests is graphed and the area under both curves (mmol/L x time) is evaluated. Glycemic index is the percentage difference between the area under the two curves.
Soylent Powder has a medium-level glycemic index of 60. Soylent Drink has a low-level glycemic index of 49. Soylent Bar has a low-level glycemic index of 55. Coffiest has not yet been tested for glycemic index, but we anticipate similar results to Soylent Drink.
In addition to glycemic index, it can also be useful to examine a food's glycemic load - a number which measures both the total quantity of carbohydrates as well as their glycemic index. One serving of Soylent Powder (40 grams of non-fiber carbohydrates, 500 calories) has a glycemic load of 28.2. One serving of Soylent Drink has a glycemic load of 16.7. One Soylent Bar has a glycemic load of 13.75.
All glycemic index and glycemic load data was generated through a third-party clinical trial conducted by GI Labs in Toronto, Canada.