The following study seems to indicate that children born, I surmise, to mothers that live in green, leafy neighbourhoods come in at about an ounce and a half bigger than babies born in less green and leafy neighbourhoods.
Bigger, Greener Babies
The study was done in Vancouver.
This would seem to make some sense, but we have to be careful to distinguish cause from correlation.
Are families in leafy neighbourhoods more wealthy and therefore have better diets? Is there an ethnic bias; are we comparing Anglo-Saxon babies to Asian babies? What about cities that are entirely green (say Abbotsford) compared to cities with very little foliage?
And does size matter?