My friend Sarah called me from her bathroom floor, insulin pen in hand, crying.
She had the flu and no idea how much insulin to take.
Her doctor's advice: "It may need to increase or decrease."
That's it.
That's the whole instruction.
So I went looking for real numbers, and what I found should make every endocrinologist uncomfortable.
Why "It Depends" Isn't Medical Advice, It's a Cop-Out
Every diabetes pamphlet says the same vague thing about sick days.
Insulin needs "may increase" during illness.
Sometimes it says they "may decrease" too.
Nobody tells you which one, or by how much.
Meanwhile, your blood sugar is climbing while a stomach bug wrecks your appetite.
Stress hormones like cortisol spike during illness, raising blood sugar independently of food intake, according to the American Diabetes Association.
That means you often need more insulin, even while eating less.
But "more" isn't a dose.
It's a shrug in a lab coat.
Stop Guessing Sick-Day Doses With Steadier Blood Sugar Support
The Actual Percentages Buried in Clinical Literature
Here's what I dug up from actual endocrinology sick-day protocols.
Many hospital-based guidelines suggest increasing basal insulin by 10 to 20 percent during fever or infection.
Some protocols push higher, up to 25 percent, for persistent high fevers above 101°F.
If vomiting or diarrhea prevents eating, though, that number flips.
You may need to reduce bolus insulin by a similar 10 to 20 percent to avoid crashing.
The Joslin Diabetes Center publishes sick-day dosing charts, but almost nobody hands them to patients directly.
Why isn't this the first page of every prescription bag?
Get the Everyday Glucose Support Your Prescription Bag Left Out
The Malpractice Fear Behind the Vagueness
I asked a nurse practitioner friend why doctors won't just give numbers.
Her answer surprised me: liability.
If a doctor says "increase by 15 percent" and something goes wrong, that's a specific instruction they can be blamed for.
Vague language protects the prescriber, not the patient.
It's the medical equivalent of a shrug emoji.
You're left doing math with your life while they cover themselves legally.
That's not treatment, that's abandonment with a diploma on the wall.
Take Blood Sugar Control Into Your Own Hands Starting Today
What This Looks Like in Real Life
Picture Sarah again, this time with a stomach virus and a toddler asleep down the hall.
She can't keep food down, so she panics about lows.
But her fever is spiking her blood sugar anyway, fighting the drop.
Without percentages to anchor her, she's guessing in the dark at 2 a.m.
This scenario plays out in emergency rooms constantly.
Diabetic ketoacidosis hospitalizations spike during flu season, according to CDC surveillance data, partly from sick-day dosing confusion.
That's not a coincidence.
That's a systemic failure with a body count.
Give Yourself More Room Before the Next 2 A.M. Scare
Why Blood Sugar Chaos Isn't Only an Insulin Problem
Here's the thing nobody connects for you.
Sick days expose a fragility that already existed before you got sick.
If your baseline blood sugar control is shaky, illness just amplifies it.
Women managing PCOS or insulin resistance already fight unpredictable glucose swings on healthy days.
Add a fever, and the whole system wobbles harder.
This is why daily stability matters so much, not just crisis math during illness.
Building a steadier baseline gives you more room to breathe when things go sideways.
Build a Steadier Blood Sugar Baseline Before the Next Flare-Up
The Overlooked Role of Everyday Metabolic Support
Most sick-day advice focuses entirely on insulin adjustment, ignoring the bigger picture.
But what about the 350 other days you're not sick?
Curbing sugar cravings and steadying energy on normal days makes emergencies less volatile.
Ingredients like Gymnema sylvestre and berberine relatives have been studied for supporting healthy glucose metabolism, per research published in the Journal of Diabetes Research.
Turmeric and pine bark extract show anti-inflammatory properties that may support circulation too, according to multiple nutrition reviews.
None of this replaces insulin.
But a body with steadier baseline blood sugar has less distance to fall when illness hits.
Support Steady Glucose on Ordinary Days With This Natural Approach
What You Deserve to Know Going Forward
You deserve actual numbers, not medical hand-waving disguised as caution.
You deserve a sick-day plan written down before you're too feverish to think straight.
Ask your endocrinologist for specific percentage adjustments, in writing, today.
If they refuse, ask why.
You also deserve support on the ordinary days, so sick days aren't catastrophic.
Stability isn't built during a crisis.
It's built in the quiet, boring Tuesdays beforehand.
Start there, and the scary nights get a little less scary.
Start Building Blood Sugar Stability on Your Calm, Ordinary Days