- October 23, 2026
【Flip the Fat-Burning Switch】Does 16-Hour Fasting Produce Ketones? How It Works, Tips to Boost Them, and Precautions
When you do a 16-hour fast, your body's fuel begins switching from sugar to fat, and ketones increase as a marker of that shift. This article explains in plain language what ketones are, why some people produce them more easily than others, how they work in the body and brain, tips for boosting them, and precautions such as how ketosis differs from ketoacidosis.