Hypoglycemia from intermittent fasting??

I am an anesthesiologist so I’m looking for insight from my IM colleagues, especially endocrine. My golf buddy claims that he occasionally gets hypoglycemia late in the morning when intermittent fasting. Totally healthy, non overweight 45 year old. No meds. Fasts from 6 pm to 10 am. Says he gets visual disturbances that sound like scotoma, maybe some lightheadedness. Reverses with food. Worse if exercise before food. Seems like healthy pancreas/glucogon would prevent this, am I wrong?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Internal Medicine and IM Subspecialties Source Type: forums