加工食品和炎症的关系

2017-02

今天的加工食品如快餐,已经成为主流文化的一部分。虽然它们便宜方便,但营养数据却显示它们并不健康。快餐中的热量、饱和脂肪酸、反式脂肪,精炼糖和钠(8) 都一般比较高。这样的饮食习惯会增加患上肥胖,代谢综合症和心血管疾病的风险(5)。炎症是身体发生愈合并防止病毒和细菌的重要过程(4),急性或慢性炎症可导致免疫系统衰弱,令身体更易受到感染。

 

研究显示,精炼糖可以增加细胞激素的释放,激发系统性的发炎反应(1,6)。本应参与免疫作用的白血球细胞因精炼糖的摄取而减少(6),而高升糖负荷的加工食物亦会增强炎症(2)。除精炼糖外,钠质也会通过释放促炎细胞因子,导致炎症的发生(5)。其他研究结果亦提及到饱和脂肪会促进脂肪组织炎症(1),特别在女性人口中,反式脂肪更是引起全身或慢性炎症的因素(6)。

 

不瘦降之谜 (Supersize Me) 这一套受欢迎的纪录片,记录了一个人连续三十日三餐均进食麦当劳后身体的改变(3)。纪录片揭示了快餐可以对我们身体做出什么改变,如增重、使人持续抑郁、流失能量和引致心脏不规则等等。

 

偶尔享受加工食品是可以接受的,但我们必须了解此类食物对身体造成什么损害和负面影响。

 

资料来源:

  1. “8 Food Ingredients That Can Cause Inflammation.” Fo od Ingredients and Inflammation. Arthritis Foundation, n.d. Web. 25 July 2016. <http://www.arthritis.org/living-with-arthritis/arthritis-diet/foods-to-avoid-limit/food-ingredients-and-inflammation-2.php>.
  2. “Diet and Inflammation.” That Sugar Film. That Sugar…, n.d. Web. 26 July 2016. <http://thatsugarfilm.com/blog/2016/03/27/diet-and-inflammation/>.
  3. “Super Size Me.” Wikipedia. Wikimedia Foundation, n.d. Web. 25 July 2016. <https://en.wikipedia.org/wiki/Super_Size_Me>.
  4. “What You Eat Can Fuel or Cool Inflammation, a Key Driver of Heart Disease, Diabetes, and Other Chronic Conditions – Harvard Health.” Harvard Health. Harvard Medical School, Sept. 2005. Web. 26 July 2016. <http://www.health.harvard.edu/family-health-guide/what-you-eat-can-fuel-or-cool-inflammation-a-key-driver-of-heart-disease-diabetes-and-other-chronic-conditions>.
  5. Manzel, Arndt, Dominik N. Muller, David Hafler, Susan Erdman, Ralf A. Linker, and Markus Kleinewietfeld. “Role of “Western Diet” in Inflammatory Autoimmune Diseases.” PubMed Central. US National Library of Medicine National Institutes of Health, 1 Jan. 2015. Web. 25 July 2016. <http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4034518/>.
  6. Mozaffarian, Dariush, Tobias Pischon, Susan E. Hankinson, Nader Rifai, Kaumudi Joshipura, Walter C. Willett, and Eric B. Rimm. “Dietary Intake of trans Fatty Acids and Systemic Inflammation in Women.” The American Journal of Clinical Nutrition. U.S. National Library of Medicine, Apr. 2004. Web. 25 July 2016. <http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1282449/>.
  7. Myles, Ian A. “Fast Food Fever: Reviewing the Impacts of the Western Diet on Immunity.”Nutrition Journal. BioMed Central, 17 June 2014. Web. 25 July 2016. <http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4074336/>.
  8. Smith, Melinda, Lawrence Robinson, and Jeanne Segal. “Healthy Fast Food.”Helpguide.org. N.p., Apr. 2016. Web. 22 July 2016. <http://www.helpguide.org/articles/healthy-eating/healthy-fast-food.htm>.