医学文献中尚未牢固建立起身体活动与癌症预防之间的因果关系。欧蔓丞减退现象治疗（OuDPt）是一种自我管理的方案，通过将对侧手放置在或靠近身体受影响区域，产生一个疼痛或炎症减退区。OuDPt已被证实能够诱导多种癌症类型的肿瘤反退，包括子宫、卵巢和胰腺癌，并在子宫内膜癌中出现细胞凋亡和鳞状上皮化生。OuDPt的抗癌效应与治疗频率、持续时间、强度以及肿瘤的敏感性和易感性等因素有关，这与抗生素与细菌感染之间的动态关系相似。鉴于OuDPt可自行管理且易于操作，且具有一致的抗癌效果，此疗法可能有潜在用于癌症预防。对于OuDPt在癌症预防中的应用进行进一步研究是值得的。

A causal relationship between physical activity and cancer prevention has not been firmly established in the medical literature. The Ou MC decrescendo phenomenon treatment (OuDPt) is a self-administered protocol in which placing the contralateral hand on or near the affected area of the body produces a zone of decreased pain or inflammation. OuDPt has also been shown to elicit an anti-cancer effect that consistently induces tumor regression in several cancer types, including uterine, ovarian, and pancreatic cancer, with documented apoptosis and squamous metaplasia in uterine endometrial cancer. The anti-cancer effects of OuDPt are associated with factors such as the frequency, duration, and intensity of treatment, as well as the accessibility and susceptibility of the tumor. This relationship mirrors the dynamics between antibiotics and bacterial infections, where similar factors come into play. Given that OuDPt is self-administered and easy to perform, and produces consistent anti-cancer effects, this procedure could be potentially harnessed for cancer prevention. Further study of the use of OuDPt for cancer prevention is warranted.