Charak Samhita
देशानामामयानां च विपरीतगुणं गुणैः। सात्म्यमिच्छन्ति सात्म्यज्ञाश्चेष्टितं चाद्यमेव च ॥५०॥
Experts of the principles of satmya (adaptation) consider that diet and lifestyle opposite to the qualities of the habitat of the individual and of the causative factors of the diseases prevalent in the location, can be adapted to (preserve health).
english translation
dezAnAmAmayAnAM ca viparItaguNaM guNaiH। sAtmyamicchanti sAtmyajJAzceSTitaM cAdyameva ca ॥50॥
hk transliteration by Sanscript