Some sort of consent implementation to ask the user's consent to use the data when they add or edit profile data. So maybe a language file for each profile field with the consent text, and a link that shows it when they edit/modify their profile. It needs to be different for every field because not all fields are used the same. Such as birthday which is personal information collected and displayed as years in the age of the user. Gender will be displayed to every member and shared with the public. So they need to be separate concent reasons.
This to comply with new Canadian laws. Very possible other nations will introduce similar laws.