"The body doesn't care where it gets its chemicals from"
Sometimes it does, or maybe the supplements are not formulated quite right. E.g. I saw this at LessWrong: "turns out that fish oil pills suck, and you’d need to take approximately 9 times as much to have the same effect as eating fish, at which point they’d have dangerous blood thinning effects."
Link to the study: http://www.ncbi.nlm.nih.gov/pubmed/12848287
Sometimes it does, or maybe the supplements are not formulated quite right. E.g. I saw this at LessWrong: "turns out that fish oil pills suck, and you’d need to take approximately 9 times as much to have the same effect as eating fish, at which point they’d have dangerous blood thinning effects." Link to the study: http://www.ncbi.nlm.nih.gov/pubmed/12848287