I have six dairy goats. Three are black and three are gold. Two of the black goats are producing milk, while only one of the gold ones is. There is a correlation between coat color and milk production in my herd: black goats are twice as likely as gold goats to produce milk.
Does this mean I should get rid of my gold goats and switch to black? No. Why? There is no causation. You also need to know that only three of my goats had kids this year: two black and one gold. That’s the difference between correlation and causation. Having a black coat does not cause a goat to produce milk, but we’re pretty sure giving birth to kids does.
It’s the same thing with the current brouhaha over Tylenol. Some studies may have suggested a correlation between Tylenol use in pregnancy and autism in children, but no one has found a causal link.
Just because two things happen together doesn’t mean one causes the other.