PMCH and Parkinson disease: The increase in dopaminergic neuron‐related genes by acupuncture and MCH neuronal activation was recapitulated by direct MCH application onto human induced pluripotent stem cell (hiPSC)‐derived dopaminergic (hDA) neurons which exhibits PD‐like phenotypes by 1‐Methyl‐4‐phenylpyridinium (MPP+) treatment (Figure 7d–g; Figure S9e–g, Supporting Information).