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很多人有这样的误解，认为免疫力强，就是好事。其实对免疫系统来说，最重要的是——

平 衡

免疫力太强、太弱都不是好事，太弱时对病原体的抵抗力下降，容易感染；太强则会更容易过敏，或引起自身免疫性疾病。

以下是无意识中给免疫系统带来伤害、影响平衡性的事，看看你中了几个？

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参考文献

[ 1 ] Round JL, Mazmanian SK. The gut microbiota shapes intestinal immune responses during health and disease. Nat Rev Immunol. 2009;9 ( 5 ) :313-323.

[ 2 ] Irwin MR, Wang M, Campomayor CO, et al. Sleep deprivation and activation of morning levels of cellular and genomic markers of inflammation. Arch Intern Med. 2008;168 ( 16 ) :1752-1754.

[ 3 ] Spiegel K, Leproult R, Van Cauter E. Impact of sleep debt on metabolic and endocrine function. Lancet. 1999;354 ( 9188 ) :1435-1439.

[ 4 ] Dinges DF, Douglas SD, Zaugg L, et al. Sleep deprivation and human immune function. Adv Neuroimmunol. 1995;5 ( 2 ) :97-105. doi:10.1159/000140488

[ 5 ] Segerstrom SC, Miller GE. Psychological stress and the human immune system: a meta-analytic study of 30 years of inquiry. Psychol Bull. 2004;130 ( 4 ) :601-630.

[ 6 ] Pedersen BK, Saltin B. Exercise and the immune system: effects, mechanisms, and recommendations. J Physiol. 2015;593 ( 3 ) :2827-2832.

[ 7 ] Chandra RK. Nutrition and the immune system: an introduction. Am J Clin Nutr. 1997;66 ( 2 ) :460S-463S.

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[ 8 ] Taylor CB, Sheron N, Keating J, et al. Moderate alcohol consumption and immune function. Alcohol Clin Exp Res. 1999;23 ( 5 ) :730-736.

[ 9 ] US Department of Health and Human Services. The Health Consequences of Smoking — 50 Years of Progress: A Report of the Surgeon General. Atlanta, GA: US Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Office on Smoking and Health; 2014.

[ 10 ] Walker, E., Ploubidis, G., & Fancourt, D. ( 2019 ) . Social engagement and loneliness are differentially associated with neuro-immune markers in older age: Time-varying associations from the English Longitudinal Study of Ageing. Brain, Behavior, and Immunity 82; 224-229.

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