The green cluster included keywords related to transient receptor potential channels activated by vanilloid chemicals and metabolism dysfunction in cells or the body, such as “TRPV1,” “capsaicin,” “obesity,” “diabetes,” “apoptosis,” “oxidative stress,” “TRPA1,” “cardiomyocytes,” and “metabolic syndrome.” This may suggest that TRPV1 affects metabolism through apoptosis. Here, TRPA1 is linked to metabolic syndrome.