Why do kids
turn picky just
as they grow?

The full narration of the video.

At one, they eat whatever you give them, even broccoli, bite after bite. By two or three, the moment something green hits the plate, a little hand pushes it away. They're in the middle of growing up. So why do they suddenly get so picky? First, it's not just your kid. A survey covered over fifty thousand three-to-seven-year-olds in nine Chinese cities. About one in three was a picky eater.

First guess: were they just spoiled? A British study looked at over five thousand pairs of twins. How much a child fears new foods comes mostly from birth, not from how they're raised. The second clue is hiding in how fast they grow.

The fastest growth is actually the first year, when weight triples. After that, it's only about two kilos a year. Slower growth means less hunger. The American Academy of Pediatrics says: a sudden drop in appetite after the first birthday is common. With a smaller appetite, foods they don't love get skipped even more. But why vegetables, of all things?

The third clue is on the tongue. Kids taste bitterness more sharply than adults. A US study had kids and their mothers taste the same faintly bitter water. About two in three kids noticed the bitterness. Fewer than half the mothers did. Lots of green vegetables are a little bitter. To an adult it's faint; to a kid, it's a mouthful of bitter.

And fruit? It's mostly sweet, and kids love sweet even more than adults. So what gets pushed away is mostly vegetables, not fruit. Less hungry, wary of new things, sensitive to bitter, all at once. So why is it strongest between two and six? Go back to that toddler who just learned to walk. Now they can run, and the second you turn around, whatever's in their hand goes in their mouth.

Long ago, some leaves and berries out in the wild were poisonous. And poison often tastes bitter. The leading idea among scientists: it's as if a little bodyguard moves in. Familiar and sweet? Let it through. New and bitter? Stop it at the door. It's still a hypothesis, and not the whole story. But it explains why this phase fades as they grow. In a Dutch study that followed kids for years, picky eating at three was twice as common as at six.

So you can't force your way past the bodyguard; let it get to know the food. No pushing, no bribing. Just put it on the table. Let them look, sniff, take a lick. Studies find a new food often takes eight to fifteen tastes before a child accepts it. Many parents give up after a few tries. That's only halfway there. Picky eating isn't spoiling; it's the bodyguard doing its job. Which food did your kid only accept after many, many tries?