The research is published in a recent issue of the Journal of Bone and Mineral Research.
The observational study did not measure cause and effect, so the researchers say the findings are not definitive enough to suggest that taking omega-3 supplements would prevent hip fractures in postmenopausal women.
"We don't yet know whether omega-3 supplementation would affect results for bone health or other outcomes," said Tonya Orchard, assistant professor of human nutrition at Ohio State and first author of the study. "Though it's premature to make a nutrition recommendation based on this work, I do think this study adds a little more strength to current recommendations to include more omega-3s in the diet in the form of fish, and suggests that plant sources of omega-3 may be just as important for preventing hip fractures in women."
Omega-3 and omega-6 fatty acids are both polyunsaturated fatty acids and essential fatty acids, meaning they contribute to biological processes but must be consumed because the body does not produce them on its own. Previous research has suggested that while both types of fatty acids are linked to health benefits, omega-3 fatty acids have anti-inflammatory properties and omega-6 fatty acids seem to have both anti- and pro-inflammatory effects.
The researchers used blood samples and hip fracture records from the Women's Health Initiative (WHI), a large national prospective study of postmenopausal women that enrolled participants between 1993 and 1998 and followed them for 15 years. For this new work, the sample consisted of red blood cell samples and records from 324 pairs of WHI participants, half of whom had broken their hips before Aug. 15, 2008, and the other half composed of age-matched controls who had never broken a hip.
The analysis showed that higher levels of total omega-3 fatty acids and two other specific kinds of omega-3s alone were associated with a lo
|Contact: Tonya Orchard|
Ohio State University