Omega-3 fatty acids could protect against Alzheimer’s disease in women. A new analysis of lipids — fat molecules in the blood — found a noticeable loss of unsaturated fats in the blood of women with Alzheimer’s disease. Scientists from King’s College London and Queen Mary University London found no significant difference in men, “which suggests that those lipids have a different role in the disease according to sex.” Those fatty acids are found in fish oil and many plant sources. Women account for about two-thirds of the more than 6 million people age 65 or older with Alzheimer’s disease in the U.S., partially because they live longer. “Our study suggests that women should make sure they are getting omega fatty acids in their diet through fatty fish or via supplements,” said King’s College group leader Dr. Cristina Legido-Quigley.