Hallo, my bloodtype is O
Can I eat marrowfats?

I'm assuming you mean marrow from bones and not vegetable marrows.

The short answer would be yes, in moderation, and from compliant meat sources.  If it is not listed, it is a neutral.  I wouldn't go heavy on marrow, since there is fat there.  But marrow bones from healthy, grass-fed beef or naturally raised lambs are delicious in soups.  :)

It appears that marrowfats are peas:
http://www.plantresearch.co.nz/marrowfats.php

I would use the pea rating from Typebase -
http://www.dadamo.com/typebase4/depictor5.pl?54 -which shows peas to be neutral for all blood types.

Thank you
cheers Jos ;D

welcome Jos!

ask away if you need help

and thanks to Joe for looking that one up!

Who would have known bone marrow was not the issue here! ;D