Women With Alzheimer’s Are Often Missing These Nutrients, Study Shows

Reported by MindBodyGreen.

Women make up nearly two-thirds of the 7 million Americans living with Alzheimer's disease. That number has driven researchers to dig into the biological reasons why — and a new study published in Alzheimer's & Dementia may have surfaced something significant: the fat in your blood.

According to MindBodyGreen, researchers analyzed blood samples from 841 participants, screening each for 700 different lipid markers and comparing people with Alzheimer's and mild cognitive impairment against healthy individuals. What they found was a clear sex-based divide. Women with Alzheimer's had notably lower levels of protective, highly unsaturated fats — including omega-3s — and higher levels of saturated fats. These shifts showed up as early as the mild cognitive impairment stage and grew more pronounced as the disease progressed. Men, by contrast, showed almost none of the same patterns. "We were able to detect biological differences in lipids between the sexes in a large cohort, and show the importance of lipids containing omegas in the blood, which has not been done before," said study first author Asger Wretlind, adding that researchers are now working to determine how early in life these changes begin.

What This Means for How You Eat

Critically, the lipid shifts in women weren't explained by cholesterol levels — which rules out the usual cardiovascular-risk narrative. This points to a more direct, independent relationship between omega-3 deficiency and Alzheimer's risk in women specifically. Study researcher Cristina Legido-Quigley put it plainly: "Women should make sure they are getting omega fatty acids in their diet — through fatty fish or via supplements." The problem is that close to 95% of Americans already fall short of omega-3 recommendations, making this less of a niche concern and more of a widespread gap.

The practical fix is straightforward, if not always easy: aim for at least two servings of fatty fish per week — salmon, mackerel, sardines, anchovies, halibut — and consider a high-quality supplement delivering 1,000 to 2,000 mg of combined EPA and DHA per serving, the threshold associated with actually raising blood omega-3 levels. On the saturated fat side, the levers are familiar but worth revisiting: cut back on fried foods and refined carbohydrates, stay physically active, limit alcohol, and maintain a healthy weight. Each of these helps the body process and store saturated fats more efficiently, keeping blood lipid profiles in a healthier range.

Your omega-3 status isn't just a heart health metric anymore — for women, it may be one of the earliest and most modifiable factors in long-term brain protection.

Read the original at MindBodyGreen.