What age do you have to be to fast?

The age at which a person can start fasting varies depending on cultural, religious, and health considerations. In many religious contexts, children are often encouraged to start fasting around puberty, typically between ages 12 to 14. However, it's important for individuals to consult with a healthcare professional, especially if they have any underlying health conditions or concerns. Ultimately, the decision should be made with consideration of the individual's physical and emotional readiness.