Problems emerging during or upon return from space flight

* Lightheadedness
* Deterioration of proprioception (ability to sense the movement and location of ones body)
* Slower wound healing
* Immune system suppression
* Muscle atrophy
* Reduction in bone density
* Facial swelling
* Height increase
* Low blood pressure
* Fainting
* Blurred vision
* Poor nutrition: weight loss, dehydration
* Disruption to sleep patterns
* Fatigue