Helemet usage, for a major newspaper.

Patient: Hello. I is writing a story for a newspaper and i have a few questions about helmet usage. Do you think wearing a helmet is neccessary? What kinds of injuries can occur is you are not wearing a helmet? What you say to someone who says ‘I am too old for a helmet’? How long sould people wear a helmet (from what age to what age)? Thanks so much! If these questions could be answered in a timely factor that would be greatly appreciated.