Do not worry about this railway. Everything with him will be normal, so it happens: at fifteen years, it seems that at twenty-seven you will hang yourself, so that the old do not live further, at thirty you understand that thirty is still youth, but fifty is terrible-terrible, sickness is somewhat increased... but even to fifty they live - and also realize that this is not old age at all, if there are diseases, then obviously not such to live not wanted... now fifty is a normal mature age, and terribly eighty... and so on to infinity.