Basically, because we are eating better and have better medical care.
Human growth depends a lot on nutrients we get between birth and around 16-19 or so. As weve learned what our bodies need for optimum growth, we have enriched foods, like bread, with vitamins and minerals we need, but don’t get often in our diet.
With our availability of food, and things like antibiotics and vaccines, we are able to provide our bodies all we need, and protect it from disease
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