When you’re sick—cold, flu, infection, or even just run down—blood sugar often rises, sometimes dramatically.
Why?
Illness puts the body under stress. Stress hormones signal the liver to release extra glucose to help fight off infection. At the same time, insulin may work less effectively.
The Catch?
You might be eating less—or barely at all—and still see higher numbers. Medications like cough syrups or steroids can also push glucose up.
The Takeaway
High readings during illness aren’t failure—they’re part of the body’s defense system. Focus on hydration, gentle nourishment, rest, and monitoring until things settle.
Illness changes the rules temporarily.
→ Expect the shift.