What does sabias que en los primeros 5 anos de vida means?

"Sabías que en los primeros 5 años de vida" translates to "Did you know that in the first 5 years of life" in English.

Here's a breakdown of the phrase:

* Sabías - means "Did you know" (informal)

* que - means "that"

* en los primeros - means "in the first"

* 5 años - means "5 years"

* de vida - means "of life"

Therefore, the full phrase is a question that introduces a fact about the first five years of life.