Could allergies prevent someone from becoming an astronaut?

circuit, highly controlled environmental system such as aboard most manned spacecraft flown to date tends to be allergen-free, hence a hay-fever sufferer has no worries. At least one of the so-called "Mercury Seven" was a hay-fever patient with an allergy to ragweed pollen. read more

circuit, highly controlled environmental system such as aboard most manned spacecraft flown to date tends to be allergen-free, hence a hay-fever sufferer has no worries. read more

If you can't swim. Claustrophobia. High Blood Pressure. Most things you really need prescription medicine for, and any problems with organs will disqualify you. If you can't work under pressure. If you have unfixable eye problems (you can still be an astronaut if you wear glasses) If you can't pass a physical. read more

Well it directly wouldn't have any affect on your goal to become an astronaut. But there is more to it. If you want to be an astronaut, you need to be in tip top condition. If you aren't perfect in every way (physically, mentally, academically and socially) you will possibly be placed out of the selection criteria. read more

Update: I don't understand why they'll allow people who were smokers but not allow (or make it harder on) people with food allergies. Smoking is seriously damaging, plus time spent in space heightens the risk of cancer.. nuts can easily be avoided, they aren't ever necessary. read more