It is known that by through hereditary the mothers family side might be more influenced then the fathers side of the family.
Few Clues
1: Observe your maternal grandfather that might give you some clues or might tell you a little bit about your future.
2: Check your residing area for thinning signs usually men baldness start around that area and around temples follow by the crown area leaving horseshoe shape area of hair around the side of the head.
3: Some medication can help but consult with your doctor before taking any medications it is known that some man had experimented decreased of libido or ED.
4: 
Micro hair extensions or hair transplant might be a solution for some men that already have some bald or thinning areas.