What’s the first thing that comes to mind when you think about advice for lowering blood pressure?
It’s very likely to be the constant refrain to restrict salt intake. It’s hardly surprising; look at any health or medical website and the first tip you’re likely to see for reducing blood pressure is to “cut back on salt”. We’ve been lectured about this for so long, decades in fact, that salt (sodium) has become inextricably linked to hypertension (high blood pressure).
But is it true? Or could it be that like many things that we’ve heard over and over, it’s just a big fat myth? In other words…
Will cutting your salt intake really help in lowering blood pressure?
That’s a great question that many people (when they stop and think about it) would like to have answered: I mean, let’s say you follow a pretty good diet… do you need to worry about salt?
You see, this whole salt thing has been haunting us since back in the 1970’s, when Lewis Dahl did a study showing that higher salt intake raised the blood pressure of rats in a lab. Of course bad news gets attention and many people took the conclusions of that study at face value and ran with them. But there were serious flaws in the study that were widely overlooked in the zeal to identify a culprit for hypertension.
First of all, the rats were fed an amount of salt equivalent to a human consumption of five hundred GRAMS daily. By contrast, the average human salt intake is around 2500 mg (2.5 grams) per day.
And this wasn’t the only problem with Dahl’s study. Let’s just say it was basically flimsy. But despite this…