The impact of space travel on the body

Over the past decades, space exploration has encountered significant breakthroughs from the discovery of new planets, new constituents in different worlds, a successful launch of the first person on the moon, and the development of various objects in the universe. Currently, the space industry seeks to explore other parts of the world and launch the first person on Mars. The plan is to first establish a base on the moon by which the spacecraft inhabiting the crew members can refuel before setting to Mars. NASA plans to launch its first crew members by 2025 to the moon and establish a base by which Mars explorations can then follow. However, a recent study showed that launching people into space can have dire effects on their body, which entails the brain and genetic makeup. 

Since the launch of humans to space, NASA researchers have monitored the health of the astronauts and the effect space explorations continuously has on their bodies. The famous Twin Study results displayed that indeed launching humans to space alters their normal body function and also their genetic makeup. Nevertheless, recent research showed that space exploration affects brain function. 

The brain is the control system of the body, and it translates and distributes information to the rest of the body, causing either voluntary or involuntary movements. The research conducted displayed that the brain is affected during space flights that resultantly causes impaired eyesight. The study is backed up by medical complaints submitted by astronauts as they arrived back on Earth. Likewise, the majority of the spacemen complained about the issue of impaired eyesight since the launch of space travel in the shuttle program. According to the medical results, spacemen experience swelling in the optic nerves, and others encounter retinal hemorrhage. Also, some astronauts experience a structural conformation on their eyes. 

According to a radiologist Larry Kramer, the optical defects are caused by a difference in intracranial pressure during the launch of the spacecraft, which consequently creates increased microgravity. The study initially took MRI scans of eleven astronauts before and after space travel, and the results were storming. Indeed, continuous exposure of microgravity causes swelling in the brain that results in an increased level of cerebrospinal fluid. The research, therefore, is in-line with the fundamental theory that space travel affects the brain cells. Also, Kramer noted that continuous exposure to microgravity caused compression in the pituitary gland, which links the problem to a brain malfunction. Also, after a year out of space travel, the effects of impaired eyesight decreased the pituitary gland, and swelled brain cells were still present hence confirming that the impact had a long-term result.