protein supplement just as good as food?

[mxim]

this question has been asked numerous times,are protein powders just as good as food? can someone live(conceivably) off protein powders and a multi vitamin?

[Beefy]

You need carbs and fat to function properly. If you were drinking a good MRP several times a day you'd get the nutrition to stay alive, but over time your body would develp health problems due to not eating solid foods. Use it or lose it, right? If you don't eat solid real food, then over a long enough time span I believe you would run in to health complications with at least your digestive system.