走査型電子顕微鏡観察により明らかになった毛髪の損傷形態と栄養状態との関連

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  • Morphological Study of Hair Damage Affected by Nutritional Conditions
  • ソウサガタ デンシ ケンビキョウ カンサツ ニ ヨリ アキラカ ニ ナッタ モウハツ ノ ソンショウ ケイタイ ト エイヨウ ジョウタイ ト ノ カンレン

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The relationship between food intake and the structure of hair cuticle were studied in healthy men and women of various ages. The food frequency questionnaire (FFQ) for weekdays was performed, and the ultrastructure of hair cuticle was also examined. With a scanning electron microscopy, various damages were revealed on the hair cuticle of healthy men and women. The abnormal structures of cuticle damage were classified into 7 categories; 1) peeling, 2) abrasion, 3) cracking, 4) hole formation, 5) dot staining, 6) destruction, and 7) cortex exposure. The abnormal structure of hair cuticle was observed mainly in obese people but not in lean people. Especially, the intake of more lipid, animal proteins, salt and less fiber, less mineral induced damage of cuticle structures. Among 7 categories abrasion and cracking were shown to be prominent hair damage induced by nutritional conditions.

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