《日本经济新闻》报道，东京药科大学工藤佳久教授发现，体内副甲状腺激素为油量增加，会杀死脑神经细胞，并可能因此而导致痴呆症。工藤使用白鼠作实验，在其胞组织中加入副甲状腺激素后，发现白鼠脑组织中主管记忆功能的部分细胞已经死亡。只要这种激素在血液中的浓厦比平常 Nihon Keizai Shimbun reported that Professor Kudo Kudo of Tokyo Pharmaceutical University found that parathyroid hormone in the body increases the amount of paraquat, which kills brain cells and may cause dementia. Kudo used mice for experiments, after adding parathyroid hormone to his cell tissue, found that some cells in the mouse brain tissue responsible for memory function had died. As long as the hormone in the blood of the building is higher than usual