Well, it's absolutely not related to nutrition....assuming you are not on some kind of idiotic fad diet.
If the pain is up in the groin area, it could be the SI joint in the pelvis/lumbar spine connection. Could be a nerve being touched or pinched or just sensitive, like the sciatica or other running through the lower back.
If the pain is up in the groin area, it could be the SI joint in the pelvis/lumbar spine connection. Could be a nerve being touched or pinched or just sensitive, like the sciatica or other running through the lower back.