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rs762551(A;A)

From SNPedia

Fast Caffeine Metabolizer.
Is agenotype
ofrs762551
GeneCYP1A2
Chromosome15
Position74,749,576
mentionedby
Magnitude2
Geno Mag Summary
(A;A) 2 Fast Caffeine Metabolizer.
(A;C) 2.1 Carrier of one CYP1A2*1F allele; Slow Caffeine Metabolizer.
(C;C) 2.5 CYP1A2 slow caffeine metabolizer.

Unlike the majority of people, caffeine is broken down faster in your liver, so it has less effect on you. Supposedly this decreases heart attack risk, although other studies show caffeine is generally good for the heart. Caffeine will be less effective at preventing Breast Cancer, Alzheimer's Disease, and Parkinson's disease. Caffeine will not make your breasts smaller.