Results shall soon be published in the Alcoholism: Clinical & Experimental Research journal indicating that the expression of our circadian clock genes can be altered by chronic alcohol consumption. In particular, lower levels of messenger ribonucleic acid (mRNA) can be found in the circadian clock genes of individuals with alcohol dependence causing sleep problems and mood changes.The term circadian comes from two Latin terms, circa meaning around and diem or dies meaning day. Circadian rhythmicity is present in the sleeping and feeding patterns of animals and it regulates our core body temperature, brain wave activity, hormone production, cell regeneration and other biological activities. “The appropriate expression or regulation of these genes is necessary for any organism to efficiently “program” physiological and behavioral activities in order to