Srimad-Bhagavatam: Canto 11 - Chapter 1 - Verse 28

Sanskrit:

पथ्यं पूतमनायस्तमाहार्यं सात्त्विकं स्मृतम् ।राजसं चेन्द्रियप्रेष्ठं तामसं चार्तिदाशुचि ॥ २८ ॥

ITRANS:

pathyaṁ pūtam anāyastamāhāryaṁ sāttvikaṁ smṛtamrājasaṁ cendriya-preṣṭhaṁtāmasaṁ cārti-dāśuci

Translation:

Food that is wholesome, pure and obtained without difficulty is in the mode of goodness, food that gives immediate pleasure to the senses is in the mode of passion, and food that is unclean and causes distress is in the mode of ignorance.

Purport:

Food in the mode of ignorance causes painful disease and ultimately premature death.