Can i drink coffee while fasting? The metabolic rules you need to know
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Nov 30, 2025 · 9 min read
For many intermittent fasters, the morning cup of joe is non-negotiable. But does that brew shut down fat burning or halt cellular repair? An endocrinologist breaks down the hormonal mechanics of caffeine during a fasted state. “From a hormonal perspective, the primary goal of fasting is to lower insulin levels to unlock fat stores. Black ...