Companies are experimenting with replacing sodium chloride with potassium chloride, because most of the health problems come from sodium. It works for some products, but if you diminish the amount of sodium, people want sugar and fat instead.
Every time the good giants try to cut back on salt, sugar, fat calories, inevitably Wall Street raises its hand and is looking at the sales figures and the revenue and saying, 'Thou shalt not result in any loss of profit.' There's huge continuing pressure on the food companies.