To stop this either use a faster film and no flash, or if you have to use a flash bounce or angle the the light from the ceiling or wall. It is usually best to take photos of people in the shade, because you won't get such harsh shadows, and people squinting. Shade is more flattering to skin tones. Shoot several pictures, because you rarely get it right on the first try. Have plenty film handy.
Freezing film can extend shelf life by up to a year .
If you are worried about the damage done to your brain by Microwave energy from the antenna then use a hands free kit. Most of the devices that claim to shield your brain are worse than useless, some even focus the energy into your head. The power used by your phone can vary by as much as sixteen times depending on whether you are getting good signals from the local transmitter. Your battery will last much longer if you are in a good reception area. Most of us are unable to do this every time so try to make sure that it happens at least once a week.