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</html><thumbnail_url>https://meic.cymru/wp-content/uploads/2025/07/woman-3275328_1920.jpg</thumbnail_url><thumbnail_width>1920</thumbnail_width><thumbnail_height>1440</thumbnail_height><description>Mae straen yn beth normal ond mae'n gallu bod yn broblem os nad wyt ti'n gallu ymdopi, ac mae'n cael effaith ar dy iechyd emosiynol neu gorfforol. Darganfod mwy am straen positif a negatif, sut i ymdopi ac awgrymiadau am sut i reoli straen yn yr erthygl arbennig yma ar gyfer Wythnos Ymwybyddiaeth Iechyd Meddwl</description></oembed>
