For today’s edition of Dear Mark, we’ve got four questions and four answers. First, I explain the merits and drawbacks of vegetable powders in the event of low produce availability. Next, I discuss whether there’s a perfect time to take your probiotics and prebiotics, or whether it doesn’t matter at all. After that, I answer a quick barrage of resistant starch-related questions, followed by a query regarding a monotonous eating regimen that by all accounts appears to be working very well. Is there a hidden danger in eating similar meals all the time?