Clean people are taller!

Well if you want your kid to be taller than you, to beat the genes that he inherited he must avoid infection & diseases until he reach the end of puberty.

From the Atlantic

"If Joe is taller than Jack, it’s probably because his parents are taller. But if the average Norwegian is taller than the average Nigerian it’s because Norwegians live healthier lives." ........

We eat food to keep our inner engines running. Our bodies then use those calories to lengthen our bones and multiply our cells until we reach the end of puberty. But when we’re ravaged by infections or deprived of nutrients, growth takes a back seat to keeping the heart and organs functioning. If we’re struck by too many diseases and deficiencies, we stop short (literally) of the height we might have achieved.

http://www.theatlantic.com/health/archive/2014/05/how-we-get-tall/361881/