Sprague Dawley rats were supplemented with either fish oil, evening pr
imrose oil or-sunflower oil (control) for 12 weeks. Calcium balance an
d fatty acid analyses of plasma and intestinal membranes were performe
d at week 12. Fish oil decreased faecal calcium excretion significantl
y leading to an increased calcium balance (p < 0.051. Increased unsatu
ration of the intestinal membranes in the fish oil group may facilitat
e calcium absorption.