I feel the title might be somewhat misleading. But the fuller article goes on to explain.

Thank you again.

"Other providers had considered adjusting Ms. K.’s diabetes medications or ordering extensive lab work without fully realizing the reasons for her recurrent hypoglycemia."

If all those providers wanted to order all those tests, they must have had no idea at all that she was fasting. It occurred to none of them to, you know, TALK with Ms. K and ASK her how much, how often, and what she has been eating and drinking since the episodes began?

Despite claims and years of tradition, fasting is dangerous when unsupervised.

The Doctors are not alone in the blame, and imp they bear the lesser aspect of it.

Conversely "religious literacy" would have helped her to know that not everyone performs fasts, so wouldn't know it was time.

Doctors, however, do know that, and also that fasting is particularly dangerous for diabetics on medication. They should have asked her about her food intake, regardless of her religious persuasion.

Good grief, my diabetic cat's veterinarian would ask all that if I called her and told her his blood sugar was low. "How much has he been eating? How often? What are you feeding him? Is he drinking plenty of water? Has any of that changed recently?" If all that was the same, THEN she'd think about adjusting his insulin dose and/or running tests.

because, as you said, that's the first thing a doctor would ask. Religion doesn't even come into it.