1. metabolism - Noun
2. Metabolism - Proper noun
The act or process, by which living tissues or cells take up and convert into their own proper substance the nutritive material brought to them by the blood, or by which they transform their cell protoplasm into simpler substances, which are fitted either for excretion or for some special purpose, as in the manufacture of the digestive ferments. Hence, metabolism may be either constructive (anabolism), or destructive (katabolism).
Source: Webster's dictionaryWhile weight loss is important, what's more important is the quality of food you put in your body - food is information that quickly changes your metabolism and genes. Mark Hyman, M.D.
I think I must have a super-fast metabolism. Katie Price
Antioxidants are chemicals that break down or neutralize the damaging effects of free radicals - chemicals produced as a byproduct of normal cellular metabolism. David Perlmutter
The excitement of vitamins, nutrition and metabolism permeated the environment. Paul D. Boyer
Around age 40 I put on twenty pounds. I had always had a perfect metabolism. But, my metabolism betrayed me as it does most people, except a very rare few who will always be thin. Suzanne Somers
I'm lucky I have good metabolism and I'm very grateful for that. Sienna Miller