Helpful to those who are lactose intolerant. I am slightly lactose intolerant...but I am generally fine with yogurt and certain types of cheeses. This explains why...

Quoted: The longer a cheese is aged, the less lactose it contains. Therefore some lactose intolerant people will have no trouble (and some will have less trouble) eating aged cheeses.
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Commonly aged cheeses:
* asiago
* cheddar
* gruyere
* parmesan
* reggiano
* romano