noone said it WILL cause that. Only that it increases the risk-which it does. There is empirical prove that it does increase that risk.
That doesn't mean it WILL or that it always does. It also doesn't mean it's a cause effect.
when ice cream sales rise, crime rates rise. But one doesn't cause the other. they are just related. The suspected cause is actually the rise in temperature.
If it was said it WOULD-then yes-I would totally see your point-but that isn't what was written.
"Love As Thou Wilt"