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rs762551(A;C)

From SNPedia

Carrier of one CYP1A2*1F allele; Slow Caffeine Metabolizer.
Is agenotype
ofrs762551
GeneCYP1A2
Chromosome15
Position74,749,576
mentionedby
Magnitude2.1
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.

One copy of the slow caffeine metaboliser SNP, and one copy of the fast version. This makes you more strongly affected by drinking coffee, as caffeine is broken down slower in the liver. Supposedly this increases the risk of heart attacks, although other studies show caffeine is generally good for the heart. It also makes caffeine more effective at preventing Breast Cancer, Alzheimer's Disease, and Parkinson's disease. Too much caffeine will shrink your breasts.