There’s no single rule carved in stone. Most Orthodox families begin introducing fasting to children around age three, when they’re weaned and eating regular food. But this isn’t about flipping a switch on their third birthday.
Think of it more like teaching a kid to swim. You don’t throw them in the deep end. You start in the shallow water, let them get comfortable, show them what you’re doing. Fasting works the same way.
The ancient fathers said children could start learning to fast once they stopped nursing. That’s around three years old for most kids. But “learning to fast” at that age doesn’t mean a toddler keeps the full Wednesday and Friday fast. It means they start learning that sometimes we say no to food for a reason. Maybe you skip the goldfish crackers between meals on a fast day. Maybe you don’t have chicken nuggets at dinner. Small things.
How It Actually Works
Around age seven or eight, expectations usually increase. By then most children are preparing for confession or have started going regularly. They can understand why we fast. They’re capable of more self-control. So the fasting gets a bit stricter. Not adult-level strict, but more than when they were three.
Some parishes use age seven as a benchmark. Others say eight. A few say twelve. These are guidelines, not commandments. Your priest knows your family. He knows if your daughter has health issues or if your son is going through a growth spurt. Talk to him.
The Eucharistic fast is different. That’s the fast before receiving Communion. Even young children can learn not to eat breakfast before Liturgy. It’s concrete and it’s short. A five-year-old can do that, especially if the service starts at 9:30 and you’re all fasting together as a family.
But here’s what matters more than any specific age: you can’t teach your kids to fast if you don’t fast. They watch you. If you’re sneaking cheese on Friday or complaining about Lent, they’ll learn that fasting is a burden we endure, not a gift we embrace. If they see you peaceful and prayerful during a fast, they’ll want that too.
What We’re Actually Teaching
Fasting isn’t about rules for the sake of rules. We’re not trying to make childhood miserable or turn dinner into a legalistic minefield. We’re teaching our children that their bodies don’t run the show. That they can say no to their appetites. That hunger offered to God becomes prayer.
This matters in Southeast Texas, where food is love and hospitality and every church event involves a potluck. Your kids need to learn young that it’s okay to say “No thank you, we’re fasting” at Mamaw’s house, even when she made her famous brisket. It’s a kindness to teach them this early, before they’re teenagers navigating youth group pizza parties and football tailgates on their own.
Start simple. Maybe during Lent your six-year-old gives up candy. Maybe your four-year-old learns to wait until after church to eat. Maybe your nine-year-old tries keeping the Wednesday fast with you, and if she’s starving by bedtime, you give her some toast and try again next week. This isn’t boot camp.
Some children take to fasting easily. Others struggle. Some have medical conditions that make fasting dangerous. Some are just wired to need more food more often. That’s fine. The goal isn’t perfect compliance. The goal is forming a human being who knows how to offer something to God, who understands that we don’t always get what we want when we want it, who can sit with a little discomfort without falling apart.
By the time your child is twelve or thirteen, they should be working toward the regular fasting discipline of the Church. Not there yet, maybe, but working toward it. And if you’ve been teaching them gently since they were small, it won’t feel like some impossible burden dropped on them in middle school. It’ll feel normal. It’ll feel like what Christians do.
If your kids are older and you’re just now coming into the Church, don’t panic. Start where you are. Fast together as a family. Let them see you struggle with it sometimes. Let them see you keep going anyway. They’ll learn.
