In fact, American astronauts never said there was a special health care product. Chlorella is easy to cultivate in space, that is, the cultivation cost is extremely low. Therefore, NASA believes that Chlorella can be used as food for astronauts at critical moments, not because Chlorella is more nutritious.

In fact, the cost of Chlorella culture is surprisingly low. Most of them are sewage farming, and almost all heavy metals exceed the standard. Chlorella cannot be cultivated with clean water. If you go to see the Chlorella culture site, you will vomit on the spot. It is estimated that you will never buy that thing in your life.