Cannabinoids (found in marijuana) are also are produced naturally by the body from omega-3 fatty acids where they fight inflammation.
A new study in animal tissue finds a series of metabolic reactions that convert omega-3 fatty acids into cannabinoids that have anti-inflammatory benefits but without the psychotropic high.
This is just one other mechanism by which omega-3 fatty acids produce anti-inflammatory benefits.
Endocannabinols have been known to be present in breastmilk for at least the past decade. It makes sense they would be present in other parts on the body.