Black coffee (1 piece) and Black coffee (1 piece)

Avoid drinking black coffee on an empty stomach; have it after a balanced meal instead.

Pair coffee with protein, healthy fat, or fiber, such as plain Greek yogurt, eggs, nuts, or chia pudding without added sugar.

Try a smaller serving, dilute it with water, or switch to half-caffeinated or decaffeinated coffee to see whether caffeine is the trigger.

Avoid having multiple coffees close together, especially when you have not eaten or after strenuous exercise.

Stay hydrated and avoid adding sugary syrups or sweetened creamers, which can make glucose fluctuations less predictable.

If you develop shakiness, sweating, dizziness, confusion, or repeated low readings, treat it promptly according to your clinician’s plan and discuss the pattern with a healthcare professional.