Tobit was a righteous Jewish man. He is faithful to the requirements of the Law and refuses to worship idols. He recommends fasting and prayer.
Here is the key Bible verse:
Tobit 12:8. Good is prayer with fasting and alms and righteousness. A little with righteousness is better than much with unrighteousness. It is better to give alms than to lay up gold:
Good is prayer with fasting. Even though righteousness and almsgiving are better, fasting and prayer are also good.
This verse does not prohit fasting, nor does it look down upon it.
Fasting is only for those who are medically capable. Check with your health care provider. Experts say you need to be under the supervision of a doctor during the time of a fast.
Unless otherwise noted, all Bible quotations on this page are from the World English Bible and the World Messianic Edition. These translations have no copyright restrictions. They are in the Public Domain.