Pregnancy and humans in space antiemetics for chemotherapy

Radiation hazards exist here on Earth, too, as anyone who has taken a medical x-ray or who works in a high-radiation environment knows. It’s why both men and women are usually supplied with protective aprons when they get x-rays or other diagnostic work. The idea is to keep stray radiation from interfering with egg and sperm production. Once an embryo is created, it’s subject to the same radiation dangers as the mother. Conditions that Could Interfere with Pregnancy

Let’s say that conception happens after a couple gets together on the space station or during a trip to Mars or even after they land on the Red Planet. The radiation environment in space (or on Mars) is severe enough that it would prevent cells in the fetus from replicating. Thus, no baby would be brought to term.

In addition to the high radiation, astronauts live and work in very low-gravity environments.

The exact effects are still being studied in detail on lab animals (such as rats). However, it’s very clear that a gravity environment is needed for proper bone development and growth. When astronaut Scott Kelly (and others) spent long periods on the International Space Station, they showed significant changes in their health.

Astronauts taking extended trips into space will be on ships that are likely not to provide the heaviest radiation shielding. Once they get to Mars, for example, they’ll be subjected to a lot of radiation on the surface that is not stopped by the thin atmosphere. Also, the lower gravity on Mars (and on the Moon, for those who migrate there), will be an issue.

So if permanent residencies are ever going to exist on Mars or the Moon, like those proposed by Dr. Mae Jemison for the Hundred-year Starship, then better shielding technology would have to be developed. Since NASA is already thinking of solutions to these problems, it’s likely that radiation will cease to become as big a threat as it is now. Overcoming the Gravity Problem

The problem of a lower gravity environment may be more difficult to overcome if humans are to successfully reproduce in space. Life in low gravity affects a number of body systems, including muscular development and eyesight. So, it may be necessary to supply an artificial gravity environment in space to mimic what humans evolved to expect here on Earth.

The good news is there are some spacecraft designs in the pipeline, like the Nautilus-X, that employ artificial gravity designs. These use centrifuges that would allow for at least a partial gravity environment on part of the ship. Anyone who has ridden a ride such as the Mission Space experience at Disney World’s EPCOT center has felt the gravitational effects that a centrifuge can supply.

The problem with such designs is that they can’t yet replicate a full gravity environment, and even then occupants would be constrained to one part of the ship located in the centrifuge. This would be difficult to manage. Further exacerbating the problem is fact that the spacecraft needs to land. So what do people do once on the ground in a low-gravity environment on a place like Mars? The Future in Space: No Kids in Space Yet

Ultimately, the long-term solution to the problem is the development of anti-gravity technology. Such devices are still a long way off. However, if spaceship technology could somehow manipulate gravity then it would create an environment where a woman could carry a fetus to term. Until that is a possibility, humans going to space currently are very likely using birth control to prevent stillbirths and miscarriages. If they are having sex, it’s a well-kept secret. But there have been no known pregnancies in space.

Nonetheless, humans will have to face a future that includes space-born and Mars- or Moon-born children. These people will be perfectly adapted to their homes, and oddly enough—the Earth environment will be alien to them. It will certainly be a very brave and interesting new period in human history!