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assumed 'tags' in /websites/forum2008/viewthread.php(601) : regexp code on line 2 Notice: Use of undefined constant tags - assumed 'tags' in /websites/forum2008/viewthread.php(601) : regexp code on line 2 Notice: Use of undefined constant tags - assumed 'tags' in /websites/forum2008/viewthread.php(601) : regexp code on line 1 Notice: Use of undefined constant tags - assumed 'tags' in /websites/forum2008/viewthread.php(601) : regexp code on line 2 Notice: Use of undefined constant tags - assumed 'tags' in /websites/forum2008/viewthread.php(601) : regexp code on line 2 Notice: Use of undefined constant tags - assumed 'tags' in /websites/forum2008/viewthread.php(601) : regexp code on line 2 Notice: Use of undefined constant tags - assumed 'tags' in /websites/forum2008/viewthread.php(601) : regexp code on line 2 Notice: Use of undefined constant tags - assumed 'tags' in /websites/forum2008/viewthread.php(601) : regexp code on line 2 堅果,有益大腦和視力發育 - 親子 - 噓!論壇 _ 無忌的論壇 ~ 歡迎芝麻小事,別聊國家大事 ~

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堅果,有益大腦和視力發育

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堅果,有益大腦和視力發育

  [B][color="Blue"]瞭解堅果[/B]
  高熱量高脂肪是堅果的特性,但是堅果含有的油脂雖多,卻多以不飽和脂肪酸為主,它富含亞油酸、亞麻酸。亞油酸、亞麻酸可是DHA和AA的前體哦,有了它們,人體就可以合成 DHA和AA。

  眾所周知,DHA又稱腦黃金,它是具有重要生理功能的長鏈多元不飽和脂肪酸,大量存在於視網膜及大腦皮質細胞中,是神經及視網膜正常發育所需。

  AA屬Omega6族長鏈多元不飽和脂肪酸,廣泛存在體內細胞,是細胞膜的重要組成物質。

  1—3歲是你家寶寶腦部和視力發育的黃金時期。孕後期到1歲是寶寶腦部發育的快速時期,除了細胞數目及重量的累積外,腦神經細胞的增生及髓鞘化也不斷的進行。1歲左右,寶寶腦的重量達到成人的80% ,而腦神經細胞的增生及髓鞘化則持續進行至3歲左右。

  大腦約有1/4的固體物質是由磷脂質形成。大腦皮質區的磷脂質主要由DHA及AA組成。大腦皮質區與視網膜及神經的發展又有密切相關。為此,常吃堅果對寶寶的大腦和視力的發育都很有好處。

  [B][color="blue"]對大腦發育的作用 [/B]
  脂肪在發揮腦的複雜、精巧功能方面具有重要作用。給腦提供優良豐富的脂肪,可促進腦細胞發育和神經纖維髓鞘的形成,並保證它們的良好功能。最佳食物有芝麻、核桃仁、自然狀態下飼養的動物及其他堅果類產品。核桃仁富含豐富蛋白質、脂肪、鈣、磷、鋅等微量元素,特別是所含的多不飽和脂肪酸對寶寶的大腦發育極為有益。

  [B][color="blue"]對視力發育的作用[/B]
  堅果除了其內含的亞油酸、亞麻酸能合成的DHA和AA對視網膜的完善有著促進作用外,其維生素及鈣、鋅等礦物質對視力的正常發育也有直接的影響。

  另外,最近科學家還發現,適當的咀嚼也有利於視力的提高。因為眼睛的脈絡膜對眼球晶體具有調節作用,而脈絡膜的調節功能有賴於面部的肌力,面部肌力的增強則得益於咀嚼強度。然而,1歲以內寶寶的食物較成人軟爛,甚至汁化,進食時咀嚼很少或根本不需要咀嚼。為此,給1—3歲的寶寶食用一些堅果,為他們的咀嚼技能提供必要的物質保證就顯得尤為重要了。咀嚼堅果,讓寶寶的眼睛更明亮!

  [B][color="blue"]溫馨提醒:[/B]
  1、一歲以下的嬰兒可以將杏仁、核桃、松籽、榛子等用磨碎機磨成粉狀,拌入沙拉、菜中或是灑在飯上,這樣不但可以增加口感,還可以充分吸收堅果的營養。

  2、1—3歲的幼兒每天可以吃20—30g左右的堅果。堅果類食物油性大,孩子消化功能弱,如果食用過多的堅果,就會“敗胃”,引起消化不良,甚至出現“脂肪瀉”。

  [B][color="blue"]生活中常見有益的堅果[/B]
  核桃:核桃含有豐富的磷脂,它能補腦、健腦,促進大腦皮質的發育。
  杏仁:杏仁是維生素E的最佳天然來源之一,它富含磷脂,但是中醫認為杏仁有小毒,不宜多食。
  瓜籽:常見的有葵花籽、南瓜籽和西瓜子。葵花籽富含不飽和脂肪酸及胡蘿蔔素,西瓜子含有豐富的鋅,同時有健胃功效。吃瓜籽應盡可能選擇原味的瓜籽,因為外裹的各種香料不但會增加熱量,還會使人口乾舌燥。
  松籽:含有豐富的維生素A和E,以及人體必須的脂肪酸、油酸、亞油酸和亞麻酸。
  榛子:含有大量不飽和脂肪酸,以及維生素A、B1、B2、煙酸等,經常吃可以明目、健腦。
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