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Natalia Rakova of Charite and MDC and her colleagues carried out research on how salty diet triggers hunger, two groups of male volunteers were sealed into a mock spaceship for two simulated flights to Mars.
The two groups in Mars had the same diet initially and later three different levels of salt in their food, the first group was examined for 105 days and the second group over 205 days.
They complained that they are hungry and have appetite for food more than before.
Excess consumption of salt led to a higher salt content in urine, experiment in mice shows that mice on salty diet were eating more, salty diet did not increase their thirst.
This result change the scientists thought about how body achieves water homoeostasis.