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That's what side effects are. Anytime you take psychoactive medications, they're going to mess with a thousand different brain systems that ALSO happen to use the neurotransmitter(s) affected by the drug, but were functioning normally. Thankfully, the brain is usually pretty good at compensating for stuff like that (which is why drug tolerance is a thing). Otherwise, side effects would probably be a LOT worse in general.

But when you say you're worried about schizophrenia, that's still thinking about it wrong. Schizophrenia is not caused by a simple overabundance of dopamine, it's caused by some kind of complex disturbance in the activity of one or more networks of brain circuits. The fact that some of those circuits have some dopaminergic components, and that some of the drugs that can partially alleviate symptoms affect dopamine among other neurotransmitters does not make dopamine central to schizophrenia.

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>“earth” element pulled things towards the center of the universe

Actually, in a sense, that seems correct. I don't know much about this stuff, but it sounds like, if it wasn't the mysterious expanding force, all the matter might have a tendency of pulling each other back into the origin of the universe.

Sometimes I wonder how those ancient Greek philosophers predicted so many things. I guess we owe them a lot, and also the Renaissance people, who I heard saved many writings from those ancient times. The whole science sounds like built on them.

There is not officially a collagen RDA, but it is believed by some people that the modern diet is deficient in collagen (or collagen amino acid precursors). Some people take collagen supplement with the objective to counteract the natural decline in production with age. Collagen is not only used in the skin, but also by the vascular system for structure and flexibility.

As for absorption, some peptides do survive the trip through the stomach. Collagen powder is a convenient way to get the amino acids in the correct proportions that can replace less convenient methods like bone broths. Protein powders do not have the correct ratio.

It's fundamentally very different. In Newtonian physics there's an attractive force that causes for instance a rock to fall down to the earth. In Aristotelian physics there's no attractive force, but the rock strives towards the earth and therefore falls down towards it.

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Yes, and the medium in which the light passes (incase that matters to you).

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If you suspend what we obviously know, that was actually a very cleverly thought out theory. Really interesting to see how people thought and understood things back then.

Thanks, didn't mean to omit. Added.

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obviously this is a hot topic and while there are some human studies, the rodent ones should be taken with a grain of salt. Collagen isn't in a typical rodent diet so it makes sense they haven't evolved to digest it the same way that humans can digest proteins. Factor in cooking and the picture gets even muddier.

His proof was deriving equations that at the time sufficiently let you describe both behaviours.

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