Is It OK To Substitute Meals With Protein Shakes?

peace-love-couture
Is it OK to substitute breakfast,lunch and dinner with protein shakes?Like in the morning having a protein shake with whole wheat toast,take my accutane,daily muti-vitamin and fiber,then I'd have to skip lunch because the food is unhealthy and then for dinner have a protein shake with,idk an apple and toast?

Is it OK to do that?

And I'm not looking for love yourself crap,so save yourself a lecture
Is It OK To Substitute Meals With Protein Shakes?
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