Researchers at the Max Planck Institute have discovered that the hormone cortisol is vital for regulating circadian rhythms

"By shifting this cortisol peak to an earlier/later time one can alleviate jet lag in our mouse model and that strategy may also work in the case of humans," Dr Eichele said. "We would want to develop a pill that one would have to take a day or so before travelling."
Dr Eichele added that it was important to see that the pill did not have any side effects as jet lag already leads to loss of appetite and insomnia.
The findings of the study appear in the journal Neuron.
Source-Medindia