Well, you were worldly and you shouldn't avoid those things because of the health risks, you should avoid them because you love Jehovah. Self-preservation is a selfish motive that could lead to taking blood, or killing someone in self-defense.
What's that you say? The reason to avoid smoking is because it makes you dirty? Oh! So it is for health risks!
And serving for everlasting life is a form of service for self-preservation? Wow!
And you can take most parts of the blood, just the tiniest fractions are off limits? I didn't know!
And it is okay to kill someone in self-defense as long as they are not killing you because you serve Jehovah? Oh. Well, then obviously this religion is becoming more mainstream and reasonable ... why do you suppose it takes itself so seriously?
Sardonically,
OldSoul