Follow-up on Dietary "Grazing" Podcast

Hey docs,

I just listened to today’s Q&A podcast segment on why grazing is not an ideal eating pattern. A decent chunk of the discussion focused on the negative effects muscle protein synthesis, and there was some discussion about being in a constant post-prandial state and insulin resistance concerns. I wanted to clarify: are the downsides of frequent eating/grazing mostly applicable to protein intake?—that is, ensuring protein boluses are spread out ~3 hours? Do these concerns still apply if grazing simply meant, for example, having a banana or some strawberries 90 minutes between larger meals, or smaller carb doses pre-workout before an afternoon workout too late after lunch but too early for dinner?

I had never realized that grazing was suboptimal. It’s easier for me to stick to a regimented dietary pattern with more frequent eating (I’ll admit, this is probably to avoid that hunger feeling as the time between meals wanes on, which is its own topic to consider.) But if consolidating meals more insularly is best, even in terms of snacking, I’ll make the switch.

Hey Conor,

As mentioned in the response of that question in episode 371, it’s not just about protein synthesis (or protein intake). Rather, there’s concern for increased rates of insulin resistance with this type of eating strategy. While I don’t have any concerns about your fruit intake, or you as an individual at all, I do not think that people should be eating more frequently than every ~ 3 hours on average.

-Jordan

Dr Feigenbaum,

Would a workout alter these guidelines in any way? For example, having a workout and post-workout meal within 3 hours of finishing the previous meal, assuming all other meals are separated by 3+ hours. Perhaps this is too much nuance to matter for the average person?

Thanks!

I don’t think this matters at all, but if forced to give an answer related to muscle mass, health, etc., I would not recommend eating more frequently than every 3 hours even if you had a workout in the middle.

An exception would be if someone is “eating” while they’re working out/being active to fuel the activity (prolonged endurance or team sports).

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