xDarc said:
JazzJack2 said:
Also just so you know cancer rates are going because people are living longer (age is the biggest risk factor for cancer)
Life expectancy rose 1.5% between 1990 and 2000, rates of cancer rose 20% over the same period, so that's bunk.
A more useful statistic would be how cancer rates among age groups has changed.
From
http://www.cancerresearchuk.org/cancer-info/cancerstats/incidence/age/
Notice that there is very little change among groups less than 60. There is a slight upward trend for 40-59, and a more visible trend for older groups. However, the age groups here are rather large, and this still gives room for bias in the data. For example, in the 60-74 group, more people would have reached the high end of that interval in recent times, and since cancer risk goes up exponentially with age, it stands to reason that this would cause that trend to go higher.
If we could get a graph showing single-year intervals, the trend would be very small, though I wouldn't expect it to go away completely. The reason why is that there really is a slight technological increase in cancer rates simply because of the tiny amounts of additional radiation we receive, among other things. X-rays, plane flights, tanning booths, and many other sources all give us a very small additional dose of radiation. They aren't necessarily bad in and of themselves; some are less than you get from sleeping next to someone. It's just that the number of sources has increased, so the chance of one of those stray particles knocking out an important chunk of DNA has increased.
This risk is impossible to eliminate completely; as I said before, you get a higher dose just from sleeping next to someone, so even if veganism and naturopathy worked and you followed as cancer-free a lifestyle as possible, you could still get cancer from the particles emitted by your significant other, or from cosmic rays, or by the minerals in the rock you picked up on the beach. Having a genetic code means being vulnerable to corruption, and beyond a certain point, there's not much you can do about minimizing your risk.
So, are vaccines to blame? So far the research says no, which means that they either aren't, or that the increase they give is so small it's impossible to separate from other influences. Suppose they do represent an increased risk, as most things do. Are they worth it? YES. Part of the reason more people are dying of cancer in their 70s is because they're not dying of smallpox or polio in their 20s and 30s, and it's because of vaccines.