YouTube will now attempt to determine users' ages, implementing age-appropriate experiences and potentially restricting access to content for those suspected of being under 18. Starting today, YouTube's systems will analyze user data to estimate age, which may impact video recommendations and availability. This change aims to enhance child safety and comply with regulations, but users may encounter limitations if YouTube's age estimation is inaccurate. Users should ensure their account information is up-to-date to avoid unintended restrictions.