Why Food Always Wins the Race (Unless You Pre-Bolus)
Carbs are fast. Insulin is… not. This episode breaks down the biology, and how pre-bolusing flips the script. Today, We’re Covering: How food vs. insulin timing actually works What causes that classic post-meal spike The first step to...
The episode, word for word
Ever feel like your insulin and your food are in a race, and the food is basically driving a Ferrari while your insulin's still tying its shoes?
That's not just a feeling. That's real.
Hey, I'm Neil, and this is Your Best T1D Year podcast. In exactly one week, my new book Type 1 Diabetes, True Stories launches. It's full of moments like this, funny, frustrating, true-to-life stories from 30+ years of figuring this out. I'll tell you more soon.
I've lived with type 1 since 1992, and even now, the timing game still catches me off guard. But understanding why food moves faster than insulin? That changed everything for me.
Okay, let's get nerdy for a second. When you eat a meal, especially one with fast-acting carbs, your body starts breaking that food down immediately. For a lot of people, blood glucose starts rising within 10 to 15 minutes.
But insulin? Even the "rapid-acting" stuff like Humalog or Novolog takes around 15 minutes just to start working. It peaks somewhere between 60 to 90 minutes and can linger for hours.
Why the delay? Well, unless you're using an insulin pump that doses directly into your bloodstream (spoiler: you're not), your insulin has to first get absorbed through the layers of your skin and fat. It has to get into your bloodstream before it can start lowering glucose.
So while your carbs are out there setting land-speed records, your insulin's still working on clearing TSA.
This is where things get frustrating. You bolus, you eat, and then... spike.
That post-meal spike isn't happening because you messed up. It's happening because your insulin just can't keep up with the carbs.
So what do most of us do? We panic-bolus an hour later. Then crash. Then rage at the CGM.
It's the same loop, over and over.
But here's the good news: when you shift the timing, even a little, everything changes.
When you take your insulin 10, 15, even 20 minutes before the first bite, you're giving it time to warm up, get into your bloodstream, and be ready before your food shows up.
That overlap, that little Venn diagram of "glucose rising" and "insulin working"? That's the sweet spot.
And no, it doesn't have to be perfect. For some people, 5 minutes helps. For others, 20 makes more sense. It depends on your meal, your body, and your day.
But here's the move: start paying attention. Notice when you spike. Think about when you bolused.
That's the first step in timing it better.
Today's challenge is simple: pick one meal. Just one.
Bolus before, even just a few minutes. Watch your CGM. Watch what changes.
Because when you start seeing why food wins the race, you can start giving insulin a fighting chance.
If this episode helped you, or made you feel a little more seen, would you send it to someone else living with T1D? Or hit subscribe so you don't miss what's coming next.
Oh, and one more thing.
If this episode stirred something in you, if you're tired of hearing 'we're out of network' or 'try calling back next month', please check out Blue Circle Health. They offer free care and support for people living with type 1, and they don't make you fight for it. We're talking about real help: CGM training, emotional support, diabetes education, medication access, and even help navigating insurance. They've helped people in 10 states lower their A1C, get better access to meds, and feel less alone. It shouldn't be this hard to stay alive. And Blue Circle Health is proving it doesn't have to be. Sign up for free at [ ](http://bluecirclehealth.org).
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49 - June 6
Friday, June 6
This is the script as read on the mic, lightly tidied for reading. Education, not medical advice. Talk to your care team before you change anything about your insulin.