Category: Space travel

According to research published by the National Institutes of Health, unicellular algae like spirulina and chlorella have been used by astronauts for decades due to their impressive nutritional density. These and other nutritional aids are part of a carefully managed regimen of what food supplements do space travellers use to maintain health and performance in a harsh extraterrestrial environment.

While space itself has no calories, the human body needs a precise energy intake to survive and function in microgravity. The average astronaut consumes between 2,500 and 3,500 calories daily, depending on their workload, to address the unique physiological challenges of space travel.