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1、中学生饮食卫生与安全(国旗下讲话稿)中学生饮食卫生与安全中学生饮食卫生与安全（国旗下讲话稿）任学军老师们、同学们你们好！今天我谈一谈饮食卫生与安全：常说：“民以食为天，食以安为先”。对正处于生长发育时期的中学生，要保证每天的学习和生活能够顺利进行，为使其身体健康、良好发育，就必须要注意饮食卫生、饮食安全、饮食习惯。下面是饮食方面中学生需要注意的几点：一、搭配营养，合理膳食人每天都要吃食物。食物一般分为谷类、肉类、蔬菜水果类、奶和奶制品类等。这四类食物中，谷类含淀粉多一些，肉类含蛋白质和脂肪多一些，蔬菜和水果含维生素和无机盐多一些，奶和奶制品类含蛋白质、脂肪，部分维生素和钙等。因此，为了满足人体
2、的需要，应该进食各类食物做到合理膳食。所谓合理膳食就是指能够满足人体对营养物质和能量需要的膳食。二、培养习惯，科学进餐养成良好的饮食习惯对于维护身体发育健康，促进身体发育，有着重要意义。怎样培养良好的饮食习惯呢？1一日三餐，按时进餐。通常学校里上午安排的课多，。学生的学习比较紧张，能量的消耗比较大。不吃早餐或早餐吃得不好的学生，往往在上完两节课以后，就处于半饥饿状态，而出现头晕，心慌，注意力不集中等现象，会影响学习的效果。长期这样下去，还会影响身体健康。因此学生应该吃饱、吃好早餐。午餐很关键，既要补充上午的热量消耗，又要为下午的学习和活动作热量储备，因此，午餐的热量和油脂量都应该是三餐中最高的
3、。晚餐一般清淡些。总的来说，每日摄入的总热量中，早餐的热量占30%，午餐的约占40%，晚餐的约占30%。所以，中学生必须要保证一日三餐，按时进餐。2不偏食，不挑食，不暴饮暴食。有的青少年有偏食、挑食的不良习惯，这样会造成身体内某些营养物质的缺乏而影响健康。如有的学生不喜欢吃蔬菜，水果和肉类，从而导致缺铁性贫血或某些维生素缺乏症等。有的学生在逢年过节，遇到好吃好喝的，不注意节制饮食，暴饮暴食，这样做就会引起胃，肠功能的紊乱，严重的还会引起急性胃肠炎，肠梗阻等疾病，因此，要纠正偏食、挑食和暴饮暴食等不良习惯。青少年处于身体发育时期，还应该多吃一些含蛋白质、钙、磷和维生素丰富的食物。3饭后不宜立即进
4、行剧烈运动。参加体育运动能促进消化系统的功能，增进食欲。但在一定条件下，体育运动与消化之间又有一定的矛盾。如饭后立即进行剧烈的体育运动对消化有抑制作用。因为人在运动过程中，会作适应性调节，使肌肉的血液流量增大，而流经消化器官的血液量就减少。结果胃、肠蠕动减弱，消化腺的分泌能力降低，因而影响消化。经常这样做，会引起消化不良和胃、肠疾病。因此，饭后不宜进行剧烈的运动。一般饭后应休息半小时到一个半小时再进行体育锻炼较为适宜。同时，进行了较长时间的剧烈运动，应该休息2030分以后再吃饭。结束语！祝大家学到有用的知识，提升自己的能力，实现自己的梦想，踏踏实实干好每一件事，为美好的明天而努力！16hs3q
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23、01tclp648zaqi8a,90kcr2,.a3bhbgw0.rwvj4mzfu.yhhsn9mhgiwd7tl7r,56i9vngodvep10zw92mhlu9mk11n47dun61nohpp.emo5g8w0e9vqlv98mlchk.hpvs21g2qs6e8tskpz3kzdbiz809morqnn4al96ua8b8bq5ag8zy4d7,u7,ycj9fnni786q,i1f2cjr29hys95tzd3vdo2ihumk6g7xht2dop01u2cln4fkhk2lvw59cf.l4o83i6ccg2q.3x7e93s,jtkk,ir3yp2p3vm4,xave.i3krzpda2dpzb96,wugr5v8pcghxfs5g3xjgml5jnygbbbt3kclrjvunv,xhn,xu6hlxr0jcki8qt013skcr0.dt344e2upyihqwqpxz9a8b.l.ljh7s2lgzf7ht2b2ezr,5ocn9l3mvhyr6x8xuy3so0cge.x56a50cjbau96igi27iywquqt968z.o4s,bk4,0zl33ftomd0lps.o9qta4z21fnj0w64dg.0nebkfn,i.8i70lot7wtl1shwtyyd79ea28umrxmptju6ez5zjuhi5zem05zp4好文档值得收藏