Guide

Yes, you can follow a fasting-mimicking style plan at home, but it should stay short, plant based, and shaped with medical input for your needs.

Yes, some Jehovah’s Witnesses fast as a personal choice, but their worship does not include required regular fasting.

Most Jewish people do not fast during Passover itself, though a special fast for firstborns takes place just before the festival.

No, traditional practice treats this new year festival as a time for prayer, festive meals, and reflection instead of regular fasting.

Yes, fasting before some liver panel blood tests is common, but many basic liver enzyme checks do not need fasting when ordered alone.

No, most hCG blood tests do not require fasting, though you should still follow any special instructions your clinic or lab gives you.

No, most hemoglobin A1C tests are done without fasting, since they measure average blood sugar over the past two to three months.

No, fasting is usually not required before an iron infusion, though your clinic may give specific instructions about food, drink, or medicines.

Most hormone checks do not need fasting, but some specific tests do, so always follow the exact instructions from your clinic or lab.

No, fasting is not always needed before a liver function test, though some doctors request 8–12 hours without food for clearer results.