Earlier social media use in pre-teens might lead to worse academic performance later in life, according to a new study published Monday in Nature. The grade impact was “smaller but still meaningful” when students opened a social media account in the 7th grade as well, and it became very little to non-significant when students joined social media in the 8th grade. The probability of repeating a grade was also higher for students who opened social media profiles in the 6th or 7th grade. Australia was the first to enact a landmark social media ban for minors back in December, and last month, France became the first European Union member to ban social media for teens, with the entire bloc likely not far behind. The age at which children will be allowed on social media differs with each ban: both the United Kingdom and Australia ban social media use for under-16s, France bans it for under-15s, while the European Union is debating an under-13 ban.