But I am kind of confused about your statement about most dogs endeding up with lumps with old age and not being able to fend them off... isn't that kind of like most doctors saying well with old age you get heart disease and diabetes and cancer etc. and youc an't fend off old age... shouldn't we know better, at least for the most part?
We're all going to die of something eventually! And we (humans/dogs) are all exposed to MANY carcinogenic substances every minute of every day, which is impossible to avoid. Plenty of people and animals who eat a species-appropriate diet still get cancer; their organs still wear out. There is no beating that.
I mean maybe your right, maybe we ca't stop them from getting lumps... but if not... then my dogs health seems fine on the kibble, as the lumps are the main reason I am wanting to switch.
Since you don't even know what these "lumps" are, I really don't get what you're asking. There is cancer, benign tumors, lipomas, abscesses, and many other possible causes for "lumps" in dogs. Some of them may be preventable (for a while at least) with diet--some of them may not. But you are asking an extremely vague question and expecting a specific answer.
My animals did just great, for the most part, on kibble as well. My kibble-fed Greta and Ellie made it to age 17. Emma made it to 18. Sophie (larger dog) to 14. I've had cats make it to 18 and 19.
I've had some problems that were directly attributable to feeding commercial food (the IBD in the cats, lymphoma in one cat, kidney disease in old age in dogs and cats, and possibly Cushing's). But with only a few exceptions all my animal have lived long lives.
My goal is to provide a higher quality
of life for my animals, a goal I believe is assisted by their going to raw feeding. They are more likely to be robust and healthy longer and they are happier b/c they are able to rip and chew their food.
If your goal is only to avoid nebulous, undiagnosed "lumps," I guess I would say either switch to raw or just stick w/ grain-free kibble.