Can you chew gum while fasting? What it means for ketosis and autophagy
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Jan 08, 2026 · 9 min read
A stick of gum feels like “nothing,” but it still contains calories in many cases. Whether gum is a fasting-friendly tool or a fast-breaker depends on your goal: fat loss and ketosis, or a stricter fast aimed at cellular cleanup. “In fasting, the question isn’t just ‘does gum break a fast.’ It’s ‘which benefit are ...