Brushing too much or aggressively causes gum and enamel loss. does this process usually take years, months or days if someone is brushing too hard?

Brush gently/ Floss: 23 year old male says, brushing too much or aggressively causes gum and enamel loss. asks if process usually takes years, months or days? Like every human action, Everything in moderation, that includes dental brushing. Adding Flossing helps to keep gum and enamel healthy. Damage can be done in days or weeks depending on how aggressively one brushes.