Is potassium chloride a win-win by reducing sodium consumption and growing potassium consumption?
Of all of the horrible issues about our diets, excessive dietary sodium consumption—excessive salt consumption—is the main threat. It’s estimated to be inflicting tens of millions of deaths yearly, killing primarily via opposed results on blood strain and elevated threat of stroke, coronary heart assault, and kidney injury. Hypertension (hypertension) continues to be referred to as the “silent and invisible killer” as a result of it not often causes signs, however it’s one of the vital highly effective unbiased predictors of a few of our main causes of dying.
We developed consuming a food plan very wealthy in potassium and low in sodium, however in the present day that sample has been fully reversed. This flip reflects a shift away from conventional plant-based diets excessive in potassium and low in sodium—a shift away from fruits, greens, roots, and tubers—and a transfer in direction of salty processed meals stripped of potassium, which is taken into account a “nutrient of public well being concern” as a result of 98% of the U.S. inhabitants doesn’t even attain the really useful minimal day by day consumption. As I’ve talked about beforehand, low potassium consumption itself is implicated in hypertension and heart problems. Nonetheless, few physicians really contemplate telling their sufferers to eat extra potassium-rich meals, like vegatables and fruits, to raised management blood strain, although a number of meta-analyses have confirmed that top potassium consumption seems to scale back stroke threat.
There may be even a discount in stroke threat unbiased of blood strain results, in keeping with different protecting results of potassium, similar to decreasing clot formation, decreasing arterial stiffening, and decreasing the era of free radicals. Larger sodium consumption is related to a 20% elevated threat of dying prematurely, whereas larger potassium consumption is related to a 20% lowered threat of dying prematurely. Since sodium is present in junky processed meals, whereas potassium is concentrated in wholesome meals like beans and greens, might having low sodium consumption and excessive potassium consumption simply be a marker for a more healthy food plan—which means extra plant meals and fewer junk? How do we all know sodium is cause-and-effect unhealthy? As a result of randomized managed trials present that sodium discount results in blood strain discount, similar to randomized managed trials present that if individuals are given additional potassium, their blood strain may be lowered as properly. So, what about utilizing potassium chloride to salt your meals, relatively than sodium chloride? That’s what’s present in these zero-sodium salt substitutes, which you’ll see under and at 2:28 in my video Are Potassium Chloride Salt Substitutes Efficient?.
Potassium chloride is taken into account a naturally occurring mineral salt, obtained in the identical means as common sodium salt. Since we get an excessive amount of sodium and never sufficient potassium, this would appear to make potassium chloride a win-win answer.
Entire wholesome plant meals could be one of the best ways to extend potassium consumption, particularly since vegatables and fruits have all types of different good issues in them. However we now have 10 research, comprised of 11 randomized managed trials, displaying that simply swapping in some potassium chloride for normal salt can result in vital reductions in blood strain in folks with hypertension, suggesting that salt substitutes could even assist stop hypertension as properly. We all know that salt substitutes can decrease blood strain, however does it really lower the incidence of hypertension, and extra importantly, illness endpoints like stroke and mortality? You don’t know till you set it to the take a look at.
In a randomized managed trial, households had their salt changed with only a quarter potassium chloride. At that stage, most individuals both couldn’t inform the distinction and even most well-liked the salt with the potassium blended in. However did it really do any good? Using even the quarter salt substitute was related to slicing the danger of growing hypertension in half.
However what about really following folks out to see if there’s any change within the threat of dying from heart problems? 5 kitchens in a veterans’ retirement house have been randomized into two teams for about two and a half years, salting meals with common salt or, unbeknownst to the cooks and the diners, a 50/50 mix of potassium chloride. These within the half potassium group lower their threat of dying from heart problems by about 40% and lived as much as almost a yr longer. The life expectancy distinction at age 70 was “equal to that which might have naturally occurred in 14 [years],” which means that simply switching to half potassium salt appeared to successfully make folks greater than a decade youthful when it got here to threat of dying. In a current large randomized managed trial in China involving 600 villages and greater than 20,000 folks over 5 years, contributors acquired both a salt substitute made from 1 / 4 potassium chloride, or they acquired common salt. Not solely did the salt substitute scale back strokes, and cardiovascular occasions basically, however it additionally lowered the danger of dying from all causes put collectively!
China is an ideal setting for this examine as a result of as much as 75% of the inhabitants’s sodium consumption comes from salt added within the house kitchen or eating room, whereas most sodium within the American food plan comes prepackaged within the meat and processed meals we purchase, although definitely the meals corporations might change over themselves. Why haven’t they? And why haven’t extra folks embraced these salt substitutes in the event that they work properly and may style simply nearly as good? We might be “Attaining the Benefits of a Excessive-Potassium, Paleolithic Eating regimen, With out the Toxicity,” says the title of a Mayo Clinic evaluate. So, “Is Salt Substitution Prepared for Prime Time?” a commentary asks. What about security? There are convincing arguments about the advantages, however what in regards to the dangers, just like the “inclusion of doubtless deadly salt substitutes within the meals provide”? Wait, what? We’ll speak in regards to the potential downsides subsequent.
Physician’s Word
That is the second in a three-part sequence on salt and potassium. In case you missed the primary video, see The Mineral Consumption Suggestions Just one in 6,000 U.S. Adults Meet. We end the sequence with Are Potassium Chloride Salt Substitutes Protected and Efficient?.
I speak in regards to the randomized managed trials for sodium in The Proof That Salt Raises Blood Stress.
