流行病学调查发现β-胡萝卜素能降低一些人类肿瘤的发生率。实验研究结果表明,β-胡萝卜素能预防放射线和化学物质的致癌作用;增强放疗和化疗对肿瘤的疗效,并减低它们时机体的毒副作用,提高宿主的免疫功能。因此,β-胡萝卜素对人类肿瘤可望有防治作用。 Epidemiological investigations have found that β-carotene can reduce the incidence of some human tumors. Experimental results show that β-carotene can prevent the carcinogenic effects of radiation and chemicals; enhance the efficacy of radiotherapy and chemotherapy on tumors, and reduce their toxic side effects, improve the host’s immune function. Therefore, β-carotene is expected to have a preventive effect on human tumors.