*
Does see this make you thirsty? Credit: Pixabay.

You are watching: Why do salty foods make you thirsty

Some world can’t gain a meal without salt. Indeed, ancient Romans assumed it was indispensable and used it as a trading medium on par v coins. The warriors offer the realm were in reality paid with a grasp of salt every day. Roman historian Pliny the Elder, declared as an next in his Natural History’s discussion of sea water, that “In Rome…the soldier’s salary was initially salt and the word salary derives indigenous it.” now salt is therefore cheap, you could literally stock tens of loads it with an average San Francisco monthly wage.

But in spite of all its very nice one going back millennia and also its common nature, we sure gained a many things wrong around salt. A braided meal, it is in it fries and chicken or tortilla chips will certainly warrant a drink or 2 to wash off all that saltiness. Follow to American and German researchers, salt actually makes you less thirsty. No immediately, however within 24 hours, the salt intake will cause our body to create water, a process akin just how the camel draws water native its hump!

Dr. Jens Titze, now a kidney professional at Vanderbilt University, has been studying person physiology in extreme settings for much more than a 4 minutes 1 century. In 1991, he to be attending a European space program course as soon as data from a simulated 28-day mission recorded his eye. He saw just how the urine quantities went up and down in a seven-day cycle, something which went against what he was taught in med school since such a bike shouldn’t exist.


Sodium — which develops an irresistible pair through chlorine which we all know and also love together salt — is an essential mineral in living things for a range of functions. In the human being body, salt levels have to be kept at a particular level otherwise all kind of health troubles can happen. Drinking excessive quantities of water, for instance, can drastically lower blood sodium, causing a condition called hyponatremia. Numerous athletes have passed away from it. 

The consensus amongst doctors is that when we eat salt, we acquire thirsty, and the excess water dilutes the salt in the blood to agree levels. This thinking is intuitive and straightforward to grasp. That might likewise be really much wrong.

When Russia do a 135-day simulation of life top top the Mir an are station in 1994, Titze uncovered himself in Moscow studying the crew members’ pee patterns and also these were influenced by salt consumption. Again, that came throughout something striking: an inexplicable 28-day valuation in the lot of salt the bodies of the crew preserved that didn’t seem come be attached to the amount of urine they produced. What should have actually happened was a predictable rise and also fall the the salt level in line with the volume that urine. Instead, the sodium appeared to be retained in the body.


*
Crew members shot out their spacesuits throughout a simulated mission to Mars in ~ the Russian Academy of Sciences’ institute of Biomedical problems (IBMP) in Moscow. Their training consisted of a regulated feeding research led by Vanderbilt University’s Jens Titze, M.D., to measure up the long-term results of a high-salt diet. (Photo courtesy the the IBMP and also the German Aerospace Center)

A decade later, between 2009 and also 2011, his team studied 4 men throughout a 105-day pre-flight phase and six others during the first 205 days of a 520-day phase that simulated a full-length manned mission come Mars and back. In the 105-day simulation, the cosmonauts ate a diet consists of 12 grams the salt daily, which was gradually cut down to ripe grams daily, then six grams daily, each over a period of 28 days. In the 520-day simulation, the cosmonauts ate an additional cycle of 12 grams the salt daily. This time, the researchers were cautious to measure up every crumb of food the crew ate and measured daily urine to the last drop.

Again the look at erroneous sample in urine volumes persisted however the other markers it seems ~ to follow the textbook: eating an ext salt led to an ext salt excretion; the lot of sodium in the blood stayed constant and the volume of to pee increased.

But then, on a closer watch at liquid intake, there was the genuine shocker: the an ext salt the crew consumed, the much less water castle drank. Additionally, the crew complained they were constantly hungry ~ above the high-salt diet despite the meals matched every crew members nutritious needs exactly. The ‘hunger games’ were gone ~ above the low-salt diet.

When Titze’s team experimented v mice top top salt diets, he found the animals drank less water the much more salt to be introduced right into their diets.

The only judicious explanation is the human body compensated by producing water once salt input creased. The person body isn’t a spring or spring however we execute retain a the majority of water in our tissue. Salt root cause the production of glucocorticoid hormone which influence metabolism and immune function. When the hormones were in high concentration, these breakdown fat and also muscle in the body to cost-free up water. The course, this come at a cost: energy, which explains why the mice on a high-salt diet ate 25 percent more food.

Of course, doctors have constantly known that a body deprived the water will resource it from the human body itself by breaking it under from the tissue. Lot in the very same way, a camel traveling through the desert that has actually no water will breakdown the fat in that is hump. But the truth that this happens from salt input alone is a huge revelation.


Get more science news like this...

sign up with the ZME news for remarkable science news, features, and exclusive scoops. Much more than 40,000 subscribers can"t be wrong.

day-to-day     Weekly

I have read and agree come the terms & conditions.


By this point, girlfriend might speak to this ‘fake news’ seeing exactly how we all know chips or pretzels do us very thirsty. In reality, Dr. Mark Zeidel, a nephrologist at Harvard medical School who wrote an editorial accompanying the published paper, says we get thirsty since salt-detecting neurons in the mouth wake up an urge to drink. This urge can have nothing to do with the body’s actual require for water.

In irradiate of these recent findings, a high-salt diet might make civilization vulnerable come diabetes, obesity, osteoporosis, and cardiovascular disease, all problems linked to high glucocorticoid levels.

“We have always focused on the duty of salt in arterial hypertension. Ours findings indicate that over there is much an ext to recognize — a high salt intake might predispose to metabolic syndrome,” Titze stated in a statement.

Whatever’s the instance the findings released in The journal of Clinical Investigation topple plenty of established notions around how salt interacts through the human being body. The consequences could be far reaching and, as is constantly the situation with controversial research, the results will have to be replicated before academics are ready to accept them.

See more: How Many Gallons In 24 X 52 Pool ? How Many Gallons Of Water Are In My Swimming Pool


*

Tibi Puiu

Tibi is a science journalist and also co-founder that ZME Science. He writes mainly about emerging tech, physics, climate, and space. In his preventive time, Tibi likes to do weird music top top his computer and also groom felines.