It's a public health thing, no? If they tell 10,000 people to decrease their salt intake, they've saved (made up figure) 10 lives. So they say everyone decrease salt, rather than the more nuanced message which is "Salt might be dangerous for some people."
> ...the less sodium that study subjects excreted in their urine—an excellent measure of prior consumption—the greater their risk was of dying from heart disease
When you have no idea about the consequences of an act, the right thing to do is not to go out and tell everyone to do it.
How many of the 10,000 are you endangering by cutting their sodium intake? Worse yet, you are not cutting their potassium intake. What long term consequences will it have on their muscular and nervous systems? Nobody seems to know.
And the point is moot anyway. It's not like we can't detect sodium sensitivity. In fact, it's almost certainly easier to discover who those 10 people are than to get the population to reduce their sodium intake.
