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.
The optimum amount of sugar in a product became known as the 'bliss point.' Food inventors and scientists spend a huge amount of time formulating the perfect amount of sugar that will send us over the moon and send products flying off the shelves.
Some of the largest companies are now using brain scans to study how we react neurologically to certain foods, especially to sugar. They've discovered that the brain lights up for sugar the same way it does for cocaine.
They may have salt, sugar, and fat on their side, but we, ultimately, have the power to make choices. After all, we decide what to buy. We decide how much to eat.