Is cooking a whole turkey healthier than buying processed turkey?

Always buy food that has not been processed. It’s pretty hard to do sometimes but food, if we can call it that is so over processed that all it is, is a delivery system for fat, salt and sugar.

But, yes. It is MUCH healthier to buy food without additives.

Ignore the person who said turkeys always have additives etc. If you buy a turkey fresh (no easy to do this time of year but frozen ones without any additives can be found). It will be much better than say processed turkey lunch meat or sausage type meat which has plenty of added flavorings, preservatives, sodium etc.
Of course the Butterball brand and similar types do have added oil and salt (not butter) and are always gross and I never buy them.
Once in awhile I will buy a frozen turkey and cook it in my slow cooker. Even one on the small side say 8-10 pounds makes enough meat for sandwiches using the breast, the shredded meat from the thighs and drumsticks can be used in all kinds of things like casseroles, burritos, soups etc. I use the carcass to make stock with carrots, celery, onions and spices added. After a long simmer it’s strained and put into freezer bags for use later on.
That turkey costs me less than a dollar a pound in most cases.