Do Neapolitan Mastiffs have a lot of health problems?

Do Neapolitan Mastiffs have a lot of health problems?
Yes, unfortunately, Neapolitan Mastiffs can suffer from a lot of health problems, especially if they aren’t carefully bred to have a stable body structure. 
Additionally, like many giant breeds, Neapolitan Mastiffs have a fairly short lifespan. On average, you can expect these big pups to live seven to nine years. This lifespan, while much shorter than smaller-sized dogs, is on par with other Mastiff breeds.