I’m borderline prediabetic and have greatly reduced my sugar consumption, which wasn’t all that high anyway. I’m 59. A year or so ago, on Ash Wednesday, I think, I was observing the Lenten fast rules and for a moment felt dizzy sitting in my chair at work, so I ate a few crackers. (My doctor had told me to ordinarily have small carbohydrate snacks between meals.)
I had never had a problem like that when fasting, and I was concerned that if I felt dizzy for a moment while driving or crossing the street it would be more serious. Still, I felt bad about it, but my mom and my doctor set me straight: OK, I had a few crackers because I thought I needed them. It’s not like I had a bacon cheeseburger. And I can, and do, abstain from othe things, such as entertainment, on Ash Wednesday and Good Friday and on other days I choose for special prayer.
If fasting creates a hazard, we can take needed nourishment without having an enjoyable meal, and we can still lift our hearts and minds to God in prayer.