One gene will not reveal all life's secrets

[ukhudshanskiy]

In other words, our chances of being born with a predisposition to a common illness such as diabetes or heart disease are not represented by the roll of a single die, but a gamble involving huge numbers of cards. Some people are dealt a poor mix and suffer as a result. Rather than drawing one fatal error, they lose life's poker game in complicated and unpredictable ways. So many small cards can be shuffled that everyone fails in their own private fashion. Most individual genes say very little about the real risk of illness. As a result, the thousands of people who are paying for tests for susceptibility to particular diseases are wasting their money.