By simulating an area mission to Mars, a global crew of researchers famous that consuming salty food led to better hunger than thirst, at the least in the long run. The motive appears to be a protecting mechanism that conserves water within the kidneys.
Researchers from the Max Delbrûck Center for Molecular Medicine in Germany and Vanderbilt University within the metropolis of Nashville within the United States studied the hyperlink between salt consumption and consuming habits on a simulated house mission to Mars.
You could also be considering what’s the connection between Mars and salt? There isn’t one actually, besides maybe that on a protracted journey, holding on to each drop of water is vital. In truth, the benefit of this setting was that the scientists may simply monitor and measure all elements of food, salt and water consumption.
The crew chosen ten male volunteers who have been sealed right into a “spaceship” for 2 simulated flights to Mars. They noticed the primary group for 105 days and the second for 205 days. They have been all given the identical food, besides that over intervals of weeks their food had three completely different ranges of salt content material (6, 9 and 12 grams).
Unsurprisingly, they confirmed that consuming more salt led to urine with a better salt content material and a better amount of urine. But this enhance was not as a result of the truth that the volunteers have been consuming more.
The researchers discovered that the volunteers who went from a 6-gram to 12-gram salt consumption drank much less, and mechanism conserving water of their kidneys or producing more water was triggered.
The authentic speculation—that charged sodium and chloride ions in salt took maintain of water molecules and dragged them into the urine—had been ripped aside. The experiment confirmed that salt remained within the urine whereas water moved again to the kidneys and the remaining of the physique.
The scientists needed to revise their view of urea, a product shaped in muscle mass and the liver as a means of shedding nitrogen. Experiments on mice confirmed that urea accumulates within the kidneys the place it neutralizes the pull of the sodium and chloride ions. But making urea requires vitality, which explains why the mice on a high-salt food regimen had an even bigger urge for food. Eating salty food didn’t enhance their thirst, it elevated their hunger. The researchers clarify on this study that urea is due to this fact not merely a waste product, however is a compound which binds to water and helps to maintain water within the physique when it will get rid of salt.
Mother Nature has discovered a means of holding on to water which might in any other case be carried away into the urine by salt. JB
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