British birth cohort studies

British Birth Cohort Studies are like a big game of "follow the lives of babies" that scientists play.

Basically, when a baby is born, the scientists keep track of them and all their friends who are born around the same time. They ask the babies and their parents all sorts of questions to learn about things like how the baby is growing and how their family is taking care of them.

Then, as the babies get bigger, the scientists keep following them and asking more questions. They also do special tests to learn more about things like their brains, their bodies, and how they learn.

And the scientists don't just follow one group of babies - they do this with lots of different groups of babies that are born in different years. That way, they can see how things have changed over time and learn more about what might affect people as they grow up.

All of this information helps scientists learn more about things like how we grow and develop as we get older, how our families and environments can affect us, and how we can help make sure that everyone has the best chance to be happy and healthy.