Intermittent fasting can be highly beneficial for many people, but those with thyroid conditions or hypoglycemia should not do a more extensive (16-hour) fast. Your digestive tract needs a minimum of 12 hours of fasting per day (overnight), just like your brain needs 7-8 hours of sleep, as that time frame is required to “clean house” from all the metabolic ‘debris’ accumulated in a given day. Most people can work up to a longer fast without difficulty, but start with 12 hours, and add one hour at a time. You always want the fast to be healing, not harmful, so if you feel unwell with fasting (lightheaded, headache, nauseous, foggy-brained) you have pushed it too far. Like so many things you have to find the right balance for your body.
Fasting blood glucose can increase for a variety of reasons, the number one reason being dietary intake of high sugar foods and refined flours, but it can also be due to inadequate proteins and healthy fats, vitamin/mineral deficiencies, low activity level, environmental toxins, and stress. If you feel like you have these areas dialed in, consider taking a supplement like BrainMD’s Craving Control, which contains several nutrients that help moderate blood sugar including alpha-lipoic-acid and chromium picolinate.
Best! -Zoe