Leaves that fall off Brussels Sprouts, any reason not to cook? A lot of recipes recommend removing the outer leaves from Brussels Sprouts.

I understand why'd you remove brown or damaged leaves but I've always thought the leaves that just fall off are perfectly fine to eat.  

Any advice appreciated.
The ones that fall off because you've accidentally trimmed off too much stem are fine to cook, although likely to overcook when treated the same as full size sprouts.