space

Inner ear keeps bones strong

Alterations of the vestibular system – the part of our inner ear that controls balance – may contribute to bone loss related to both aging and space travel.

Simulated Mars mission reveals body’s sodium rhythms

Clinical pharmacologist Jens Titze, M.D., and colleagues have discovered that – in contrast to the prevailing dogma – human sodium levels fluctuate rhythmically with 7-day and monthly cycles.