demonstrated how a shotgun could blow a small treetrunk in half with the right balances.
A small treetrunk does not have the same ballistic properties as human tissue. Humans are soft, and thus the majority of the bullets kinetic energy will pass though the tissue doing comparatively little damage (particularly if the bullet doesn't deform or break up), and exit the other side. A tree trunk is a hard massive target, which will absorb a much larger amount of kinetic energy. That's why you use different ammunition against people (Hollow Points) and against hard targets (like Saboted Light Armor Penetrator). but less people die from it than smoking for sure.
Except you don't die from smoking. You die from smoking attributed cancer (which for all anyone knows could be caused by hundreds of other chemicals we come into contact with every day). Basically if you're not predisposed to get cancer, you're going to be just fine (unfortunately the only way to find out, is to subject yourself to large amounts of carcinogens). Alcohol on the other hand will wreck havoc on your liver, eventually causing organ failure and death regardless of any outside factors. Lets make a list..
Bacteria isn't necessarily a bad thing. They strengthen our immune system. In fact the obsession with cleanness (in the words of George Carlin, "In prison, right before they give you a lethal injection, they swab your arm with alcohol") has made us susceptible to bacterial infections our ancestors would have just shrugged off. Actually the most hilarious part of that "scientific" article was the las (and only) figure, showing us "The relative strength of known public health threats".
Yeah. I don't get that at all. How is condom use a heath threat? Are the kids choking on them or what? Never mind the "H" score which is just bizarre. Ignoring that homework and academic achievement is only marginally related (never did any homework, always aced every test), how is academic achievement possibly a health risk?