A client told me, with real pride, that he was good with salt. He bought the low-sodium broth, the no-salt-added cans, the bread marketed as heart-healthy. He salted nothing at the table. He had cut it years ago, after a doctor mentioned his blood pressure was creeping and the internet did the rest.
He was also dizzy when he stood up too fast. He cramped on long rides. He craved salt so badly he would dream about chips. And he felt flat in a way no amount of sleep fixed. He had filed all of that under unrelated. It was not unrelated. He had spent years restricting something his body was openly asking for, and he had done it because a label told him salt was bad and being good felt like health.
That word again. Bad. Good. The same moral frame that ruins people’s relationship with food had been quietly wrapped around a mineral, and he obeyed it without ever checking whether the science underneath was as solid as the certainty on top.
It is not. Not even close.
The certainty is manufactured
Let me be precise, because this is contested territory and the sloppy version helps no one. One part of the salt story is real and not in dispute. Sodium raises blood pressure, and it does so most in people who are salt-sensitive or already hypertensive. If that is you, this matters, and I will come back to it.
The leap is what I want you to see. The leap from “sodium raises blood pressure” to “less salt means a longer life for everyone” is where the evidence stops keeping up with the confidence. Blood pressure is a number on the way to an outcome. The outcome is what actually matters, whether you live longer and avoid heart attacks and strokes. And when researchers followed large populations to see how sodium intake tracked with those real outcomes, the clean story fell apart.
The largest of these efforts followed more than a hundred thousand people across eighteen countries. It did not find a straight line where less is always better. It found a J-shaped curve. Risk went up at high sodium intake, as expected, but it also went up at low intake, below roughly three grams a day. And the harm at the high end showed up mainly in people who already had high blood pressure and were eating a lot of salt. In people without hypertension, high intake was not associated with more cardiovascular events at all. The picture was not a slope. It was a valley, with danger at both edges and a comfortable middle.
The honest part most people skip
Now here is where I have to be more honest than the people who usually write about this, in either direction. That J-curve is not settled. There is a genuine scientific fight here, and it has a nickname among researchers. The salt wars.
A serious opposing camp argues the J-curve is an illusion. They point to two real problems. The first is reverse causation. Sick people often eat less, and eat less salt, because they are sick, which can make low sodium look dangerous when it is the illness doing the harm, not the salt. The second is measurement. The cheap way to estimate someone’s sodium intake, a single spot urine sample run through a formula, distorts the low end and can manufacture a curve that the gold-standard method, multiple full-day urine collections, does not show. Using the better method, this camp finds something closer to a straight line, more sodium, more risk. One long study following people for over two decades reported exactly that.
So who is right? I do not know, and neither does anyone honest, which is the entire point of this post. The question of whether moderate salt restriction helps the average healthy person live longer is openly disputed by serious scientists using serious methods. That is a wildly different thing from what you were told, which was a flat, confident command to eat less, delivered as if it were arithmetic. The certainty was manufactured. The science is a fight.
Going too low is not free
There is one more piece the “lower is always better” message leaves out entirely, and it is not in dispute. Cutting sodium hard has a physiological cost.
Your body does not sit there passively while you starve it of an essential mineral. It defends itself. Drop sodium low enough and it activates a hormonal system called the renin-angiotensin-aldosterone system, the machinery that exists to claw sodium back and hold onto it. Renin rises. Aldosterone rises. That is not a neutral background event. It is your body raising the alarm. Short feeding studies that pushed sodium down have also reported rises in certain blood fats and stress markers. Whatever else is true, very low sodium is not a free lunch. It is a stress signal sent to a system that, in the burnt-out executive I usually work with, is already running hot.
What the bill looks like
Most men who have over-restricted salt never connect the symptoms to the cause, because nobody told them salt could be the cause. So here is what under-salting tends to feel like, especially in someone lean and active.
Light-headedness when you stand up quickly, because sodium helps hold your blood volume and your blood pressure steady when you change position. Muscle cramps, particularly during or after training, because you sweat sodium out and never put it back. Salt cravings you keep treating as a failure of willpower, when they are closer to a smoke detector going off. A general flatness, low drive, dull headaches. None of these proves anything on its own. But in a man who has spent years proudly avoiding salt while training hard and eating clean, they form a pattern, and the pattern points straight at the mineral he was told to fear.
There is a quiet irony buried in the clean-eating advice here. The more you move toward whole, unprocessed food, the lower your sodium drops automatically, because the sodium in a modern diet lives overwhelmingly in processed and packaged products, not in the shaker. So the disciplined man doing everything right, cooking from scratch, avoiding anything from a box, often ends up with the least sodium of anyone in the room, all while believing he still needs to cut more. He has removed the salt twice over, once by abandoning processed food and again by refusing to season, and then he wonders why he feels wrung out by Thursday.
Who the rule was actually built for
This is where it lands, and it is the same lesson as everything else. Context over the rule.
Ask who the aggressive low-sodium guidance was built for. Older people. People with established high blood pressure. People who are salt-sensitive, sedentary, and eating a diet built largely from processed, pre-salted food, which is where most sodium in a modern diet actually comes from. For that person, cutting back is reasonable, sometimes important.
Now ask if that is you. If you are a lean, active man who sweats through training, eats mostly whole foods, which are naturally low in sodium before you ever pick up the shaker, drinks a lot of water, and maybe leans lower-carb, which makes your kidneys dump sodium even faster, you are in nearly the opposite context. You may have cut salt you genuinely need, on the authority of advice that was never pointed at you. The dizziness when you stand. The cramps. The cravings you keep overriding. The flatness. Your body has been sending you the bill, and you have been filing it under everything except the obvious.
Here is what I do, and what I tell people who do not have a blood-pressure problem.
If you have high blood pressure, kidney disease, or heart failure, none of this is your permission slip. For you, sodium can genuinely matter, and you manage it with your doctor, with real monitoring, like the medical issue it is. Stop reading this as license.
For everyone else, salt your whole-food meals to taste. When you are eating real food rather than processed food, your appetite for salt is a decent guide, far better than a round number on a guideline written for someone else’s body.
Prioritize potassium. This is the calmer, less contested half of the story. More potassium, from fruit, vegetables, and tubers, is consistently linked with lower risk, and most people get nowhere near enough. The balance between sodium and potassium matters more than sodium alone, and it is the part almost no one is actually working on.
If you train hard and sweat, you lose sodium in that sweat. Replace it. This is not radical. It is plumbing.
The calibration
Salt was never good or bad. It is contextual, like the rice and the dessert and everything else a label has ever tried to moralize for you. The confident rule you were handed took a genuinely disputed, deeply context-dependent question and flattened it into a slogan, and the slogan worked on you because it sounded like virtue. Being good with salt felt like being healthy. It was not the same thing.
So stop chasing a number, in either direction. I am not telling you to pour salt on everything any more than I would tell you to fear it. I am telling you the question is contextual and the answer lives in your actual body and your actual situation, not in a guideline built for a different man. Eat real food. Salt it to taste. Get your potassium up. And if you have a blood-pressure problem, treat it as the real thing it is, with a doctor, not with a reflex.
The slogan was never as solid as it sounded. Most of them aren’t.
This newsletter is where I take one of these apart every week. The rules you obeyed without checking, the certainty that turned out to be a fight, the virtue someone sold you and called health. Subscribe if that is useful to you. Don’t if it isn’t.
P.S. None of this is medical advice, and salt is the one topic here where that disclaimer has teeth. If you have hypertension, kidney disease, or heart failure, do not change your sodium intake based on an essay. Talk to your doctor, who can actually monitor your blood pressure and your bloodwork. The argument here is about manufactured certainty, not a prescription to salt your way out of a real condition.
Great post, thank you, and i have been wondering about your opinion on salt. Your insights and balanced views are reassuring