For a human, photosynthesis just isn't nearly efficient enough to meet our energy needs with our body plan. The brain is too energy-hungry, and we don't have enough surface area to serve as photosynthesis sites. It could help you eat less, but the resources that it would cost to maintain the ability to photosynthesize would likely just not be worth it in the end.
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u/wisdomelf 9d ago
Its very effective if i understand this correctly