No. Alternators are maintenance free. The failure of alternators isn't related to mileage. Outside of extreme conditions, the only cause for alternator failure.
In general, there is no fixed interval for replacing your brakes, as the duration of the brake components much depends upon the vehicle as well as upon driving.
So if you're running 20 miles per week, you'll probably need to replace your running shoes after around 4 - 6 months of wear. However, where you fit in that.
It's thus recommended that you replace tires older than ten years old, even if they seem perfectly serviceable. As they get stiff and get brittle, tiny cracks.
Don't delay changing the transmission fluid according to the vehicle's maintenance schedule. Keeping up with the task every 50,000-60,000 miles, if that's what.
People with breast implants can experience complications associated with the surgery to insert them (eg infection or bleeding) or with the breast implant.