Multiple articles on this site point toward better health from reducing intakes of sodium and refined sugar. They are well referenced and well supported by scientific data. Recently Consumer Reports, an outstanding purveyor of unbiased information to US consumers has summarized contemporary scientific opinion in a more fluent and convincing way than I or Jill Harris could achieve.
Even so, they have put their weight and reputation on the scale against salt and sugar. If our stuffy science has not convinced you, read their far more capable writing and make the changes you need to make.