Exactly
Those percentage increases are always a great way to feed scaremongering. And they are used precisely for that purpose.
Consider the cholesterol scare.
The headlines scream "A high cholesterol level increases your chance of suffering a heart attack by 50 percent!"
And a new profitable branch of business for Big P is born, as otherwise completely healthy people start taking pills to lower their cholesterol level. Daily, and long-term, of course. Never mind that those pills can kill you (
see here).
What those screaming - and often-repeated - articles fail to mention is that this oh-so-horrible and oh-so-life-threatening "50%" is
relative increase. The
absolute increase is
two. Thank you. I'll take that chance.
And this is how they arrive at the math:
Statistically,
Out of 100 persons with normal cholesterol level (age 50 and male), 4 will get a heart attack.
Out of 100 persons with elevated cholesterol level (age 50 and male), 6 will get a heart attack.
6 minus 4 = 2
The absolute increase is 2
Relative percentages are, of course, different.
6 minus 4 is 2
2 is 50% of 4
--> a 50% increase
And that is what is reported all over the media.
I will leave it to the reader to speculate on the "why"