Why is there scientific uncertainty regarding the health claims of chlorophyll supplements?

Answer

Most research consists of preliminary studies or small-scale laboratory trials

While there is significant interest in the antioxidant and health-promoting capabilities of chlorophyll, current scientific backing remains thin regarding its efficacy in humans. A large portion of the existing evidence is based on in vitro research conducted in laboratory settings or small-scale studies. To confirm specific therapeutic benefits, dosages, and long-term efficacy, more large-scale, randomized, controlled human trials are required. Currently, much of the popular support for these supplements outpaces the availability of robust, definitive clinical data, leading many medical professionals to advise caution when interpreting health claims.

Why is there scientific uncertainty regarding the health claims of chlorophyll supplements?
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