Many liquid protein drinks are more nutritious than so called "real foods." I've done lots of research over the years on protein and cleansing, not just with the Isagenix products. So I was interested to see the ingredients of Soylent. Link to Soylent ingredients.
They use rice protein which is generally recognized to be inferior to whey protein. Of course, not all whey proteins are the same. Isagenix uses a superior undenatured whey from New Zealand. Learn more about Isagenix whey protein powder. It can be purchased in the form of a flavored shake (great tasting) or as pure protein powder. There are lots of athletes who use the products as well as people like me who want to loose weight and know that the shakes can pack a lot of nutrition for a moderate number of calories.
Isagenix athlete success stories.