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Alien life may not be carbon-based, new study suggests::Self-sustaining chemical reactions that could support biology radically different from life as we know it might exist on many different planets, a new study finds.
Both of those questions will depend on what kind of environment they need to survive. They might need pressures higher than we can or a pH that would be corrosive to us, or exposure to an chemical that is toxic to us like oxygen was to most life that was around when photosynthesis started producing it.
If we can make physical contact with it, we’ll be able to eat it. But if it is based on a different chemistry, I doubt there will be much nutritional value for us as our proteins and vitamins are all based on our chemistry. Hell, there’s a good chance we won’t get much nutrition from alien life based on the same chemistry because they might have evolved with a completely different set of proteins that might do things similarly but connect with each other a bit differently. There’s a symmetrical set of proteins that look like mirror images of ours and would behave exactly the same, but aren’t compatible with ours.
Opposite sugar would be the best “sugar free”/zero calorie alternative. If we had some alien vegetation that grew this. Obesity, diabetes and tooth decay would be a thing of the past. Real sugar, completely indigestible to humans.
We can all ready do that L glucose tastes like sugar (D glucose) but can not be broken down
If it even binds to our taste receptors.