{"id":15769,"date":"2026-02-26T12:30:58","date_gmt":"2026-02-26T11:30:58","guid":{"rendered":"https:\/\/leitelarsa.es\/?p=15769"},"modified":"2026-04-06T10:34:25","modified_gmt":"2026-04-06T08:34:25","slug":"que-e-a-lactase-a-encima-que-nos-axuda-a-dixerir-a-lactosa","status":"publish","type":"post","link":"https:\/\/leitelarsa.es\/gl\/blog\/que-e-a-lactase-a-encima-que-nos-axuda-a-dixerir-a-lactosa","title":{"rendered":"Que \u00e9 a lactase, a encima que nos axuda a dixerir a lactosa"},"content":{"rendered":"

Se es intolerante \u00e1 lactosa, seguro que\u00a0<\/span>escoitaches<\/span> falar da encima lactase. <\/span>Pero,\u00a0<\/span><\/span>que \u00e9 exactamente a lactase<\/span><\/span>?<\/span>\u00a0En esencia, \u00e9 a encima responsable de que\u00a0<\/span>unhas<\/span>\u00a0<\/span>persoas<\/span>\u00a0toleren a lactosa sen problemas e\u00a0<\/span>outras<\/span>\u00a0non.\u00a0<\/span>Neste<\/span>\u00a0artigo\u00a0<\/span>explic\u00e1mosche<\/span>\u00a0todo sobre\u00a0<\/span>a lactase<\/span>\u00a0de\u00a0<\/span>xeito<\/span>\u00a0<\/span>clar<\/span>o<\/span>\u00a0<\/span>e<\/span>\u00a0<\/span>f\u00e1cil<\/span>\u00a0de entender.\u00a0<\/span>Imos<\/span>\u00a0paso a paso.<\/span><\/span>\u00a0<\/span><\/p>\n

Que \u00e9 a lactase <\/span>e<\/span>\u00a0para que serve<\/span><\/h2>\n

Para entender\u00a0<\/span>que \u00e9 a lactase<\/span><\/b>\u00a0(con \u201ca\u201d),\u00a0hai\u00a0que\u00a0comezar\u00a0pola\u00a0<\/span>lactosa<\/span><\/b>, o\u00a0azucre\u00a0natural do\u00a0leite.<\/span>\u00a0<\/span><\/p>\n

A lactosa est\u00e1 formada pola uni\u00f3n de dous azucres simples: glicosa e galactosa. O noso intestino non pode absorbela directamente, as\u00ed que precisa descompo\u00f1ela previamente. Aqu\u00ed entra en xogo a encima lactase.<\/span>\u00a0<\/span><\/p>\n

A lactase \u00e9 unha encima (un tipo de prote\u00edna) localizada no intestino delgado. A s\u00faa funci\u00f3n \u00e9 sinxela: \u201ccortar\u201d a ligaz\u00f3n que une os dous azucres simples que forman a lactosa para permitir a s\u00faa absorci\u00f3n: a <\/span>glicosa<\/span><\/b>\u00a0e a\u00a0<\/span>galactosa<\/span><\/b>.<\/span>\u00a0<\/span><\/p>\n

Se\u00a0esta\u00a0encima non est\u00e1 presente en\u00a0cantidade\u00a0suficiente, a lactosa\u00a0chega\u00a0intacta\u00a0ao\u00a0colon, onde as bacterias\u00a0ferm\u00e9ntana\u00a0e poden aparecer\u00a0provocar\u00a0s\u00edntomas como\u00a0inchaz\u00f3n, gases\u00a0ou\u00a0diarrea; \u00e9\u00a0dicir, o que se\u00a0co\u00f1ece\u00a0como\u00a0<\/span>intolerancia \u00e1 lactosa<\/span><\/b>.<\/span>\u00a0<\/span><\/p>\n

Por que<\/span>\u00a0<\/span>algunhas<\/span>\u00a0<\/span>persoas<\/span>\u00a0<\/span>perden<\/span> a lactase<\/span><\/h2>\n

Cando falamos de\u00a0<\/span>lactase<\/span><\/b>,\u00a0tam\u00e9n\u00a0falamos de\u00a0xen\u00e9tica. Os\u00a0niveis\u00a0desta\u00a0encima son\u00a0moi\u00a0altos nos beb\u00e9s\u00a0e\u00a0nos\u00a0nenos\u00a0pequenos\u00a0en per\u00edodo de lactaci\u00f3n, pero\u00a0na\u00a0maior\u00eda\u00a0das\u00a0poboaci\u00f3ns\u00a0do mundo\u00a0dimin\u00faen\u00a0progresivamente coa\u00a0idade.\u00a0Isto\u00a0ch\u00e1mase\u00a0hipolactasia\u00a0do adulto\u00a0e\u00a0afecta a gran parte da\u00a0poboaci\u00f3n\u00a0a nivel global.<\/span>\u00a0<\/span><\/p>\n

Por\u00e9n,\u00a0algunhas\u00a0poboaci\u00f3ns\u00a0(sobre todo en Europa) que\u00a0consumiron\u00a0leite\u00a0durante miles de\u00a0anos\u00a0desenvolveron\u00a0unha\u00a0variante\u00a0xen\u00e9tica\u00a0que permite<\/span> manter a produci\u00f3n de lactase durante toda a vida<\/span><\/b>.\u00a0Isto\u00a0\u00e9 o que se\u00a0co\u00f1ece\u00a0como\u00a0<\/span>persistencia da lactase<\/span><\/b>.<\/span>\u00a0<\/span><\/p>\n

Como saber se\u00a0<\/span>te\u00f1o<\/span> suficiente lactase<\/span><\/h2>\n

Sospeitalo\u00a0\u00e9\u00a0doado: cando\u00a0<\/span>non<\/span><\/b>\u00a0producimos\u00a0<\/span>suficiente encima lactase<\/span><\/b>, aparecen s\u00edntomas como gases,\u00a0dor\u00a0abdominal,\u00a0inchaz\u00f3n\u00a0ou\u00a0diarrea\u00a0despois\u00a0de consumir\u00a0leite\u00a0ou\u00a0produtos\u00a0l\u00e1cteos. Se estes s\u00edntomas desaparecen\u00a0ao\u00a0reducir\u00a0ou\u00a0retirar a lactosa durante\u00a0uns\u00a0d\u00edas, \u00e9\u00a0unha\u00a0pista importante.<\/span>\u00a0<\/span><\/p>\n

A\u00ednda\u00a0as\u00ed, a \u00fanica forma de\u00a0comprobalo\u00a0\u00e9 mediante probas espec\u00edficas, como o\u00a0<\/span>test de\u00a0hidr\u00f3xeno\u00a0espirado<\/span><\/b>, pautado por un profesional sanitario.\u00a0S\u00f3\u00a0as\u00ed\u00a0poder\u00e1s\u00a0saber se efectivamente tes\u00a0<\/span>intolerancia \u00e1 lactosa<\/span><\/b>.<\/span>\u00a0<\/span><\/p>\n

Podo seguir tomando\u00a0<\/span>leite<\/span>\u00a0se son intolerante \u00e1 lactosa?<\/span><\/h2>\n

Ser intolerante \u00e1 lactosa\u00a0<\/span>non significa\u00a0deixar\u00a0de tomar l\u00e1cteos<\/span><\/b>. De\u00a0feito, os l\u00e1cteos son un grupo de alimentos indispensable,\u00a0xa\u00a0que nos\u00a0achegan\u00a0prote\u00ednas de\u00a0calidade, calcio de f\u00e1cil absorci\u00f3n, vitaminas (A, D, B2, B12) e\u00a0outros\u00a0minerais\u00a0beneficiosos para a\u00a0nosa\u00a0sa\u00fade. Consumir as\u00a0<\/span>3\u00a0raci\u00f3ns\u00a0de l\u00e1cteos<\/span><\/b>\u00a0recomendadas\u00a0ao\u00a0d\u00eda \u00e9\u00a0unha\u00a0forma\u00a0doada\u00a0e deliciosa de cubrir os\u00a0requirimentos\u00a0de\u00a0moitos\u00a0nutrientes\u00a0esenciais.<\/span>\u00a0<\/span><\/p>\n

Agora\u00a0ben,\u00a0Larseiro, se es\u00a0<\/span>intolerante \u00e1 lactosa<\/span><\/b>,\u00a0\u00e9\u00a0importante elixir ben o tipo de l\u00e1cteo. En Larsa\u00a0temos\u00a0unha\u00a0ampla gama de\u00a0<\/span>produtos\u00a0sen lactosa<\/span><\/a>, pero con todo o sabor do\u00a0noso\u00a0Leite\u00a0de Pastoreo.\u00a0<\/span>\ud83d\ude09<\/span>\u00a0<\/span><\/p>\n

Son\u00a0unha\u00a0opci\u00f3n pr\u00e1ctica\u00a0e\u00a0deliciosa: a lactosa\u00a0xa\u00a0est\u00e1\u00a0descomposta\u00a0grazas\u00a0\u00e1\u00a0<\/span>encima lactase engadida<\/span><\/b>\u00a0durante a\u00a0s\u00faa\u00a0elaboraci\u00f3n, polo que podes\u00a0consumilos\u00a0sen medo a presentar s\u00edntomas\u00a0e\u00a0gozar de todo o\u00a0seu\u00a0sabor.<\/span>\u00a0<\/span><\/p>\n