A toy food would be something that tastes excellent or fun to consume but no real health benefit, e.g., you could run a toy car in your basement but not use for

A toy food would be something that tastes excellent or fun to consume but no real health benefit, e.g., you could run a toy car in your basement but not use for commuting. The worry with soylent or other food replacement is that it could outright harm you. Pfizer was developing Torcetrapib as a successor to multi-billion dollar Lipitor and it was on in Phase III that it was found to have adverse effect. It took 16 years of development, and close to $1B expense before the side-effects were discovered. The soylent effort is great but if there are any health issues, they may come to the surface much later.