Plant hormones, also known as phytohormones, are chemicals that regulate plant cell processes. They are signal molecules produced within the plant functioning in extremely low concentrations.

Evidence started accumulating in the late 1980s that the GLP-1 hormone could be used to induce insulin secretion, hinting at a path to a new treatment for diabetes and attracting industry interest.

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So-called hormone-balancing diets aren’t exactly new: self-help books positing hormonal balance as the way to wellness began appearing in the early 2000s, marrying scientific-sounding claims ...