23/02/2026
If you’re getting headaches in the first days of fasting — it’s very likely caffeine withdrawal.
Here’s what most people don’t realize:
If you cut coffee cold turkey, even as a light-to-moderate drinker, headaches can be intense but usually peak and resolve within 2–5 days.
But if you continue having small amounts at iftar… the withdrawal drags out.
You’re not fully off caffeine. You’re tapering unknowingly.
That can stretch headaches closer to 5–10 days because your brain is still adjusting to fluctuating adenosine receptor sensitivity.
Short and sharp vs prolonged and lingering.
This isn’t “low blood sugar.” It’s neurochemical recalibration.
Hydrate. Sleep. Magnesium can help.
And if you’re stopping — stop properly.
Your brain will adapt.
