Yeah, Goldens are very prone to cancer in general. We've just been following our vet's advice for each dog, as it evolves. It used to be spay early to avoid mammary cancers, now it's shifted to spay later to avoid bone cancer.
We had one dog who died at 13 from liver disease. She was probably a puppy mill dog (from a mall pet store), but it was the early 90s and we didn't know any better. She had the worst teeth.
Our next two were mutts. Elke made it to 16+, until a broken hip and suspected tumor on her leg bone. Dexter lived to 17+, no major issues. We just had to put him to sleep last week, but it was old age and arthritis. Both were 60-70lb dogs, so impressively old for their size.