The Manu Samhita highlights Pujitam Hyashanam Nityam,

The Manu Samhita highlights Pujitam Hyashanam Nityam, Balamurjam Cha Yachchhati |
Apujitam Tu Tad Bhuktam, Ubhayam Nashayedidam

Meaning: Purified and consecrated food provides energy and power whereas impure, unconsecrated food causes adverse effects. Here, by "consecrated" is meant sanctified by offering to the Deity and eaten gracefully with corresponding feelings; it is found to have health ful, ennobling effects on the gross and the subtle bodies.

The following Mantra from the "Chhandogya Upanishad " also elucidates the hidden effects of what we eat and further illustrates the majestic insights of the rishis of vedic times:

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