What the researchers can see, however, is that there are differences within the group given omega-3. There was an increase of two of the markers that are linked to damaged nerve cells.O3 caused an increase in damage markers???
No O3 did not cause increase in damage markers. They are saying that in a couple of the O3 people they found an increase in a couple of the markers associated with decline, but there was no decline in function.
Memory function gets worse over time. The “markers” increase over time too. If the O3 helped, they do not know why. Correlation is not causation, but if you have no idea of the cause, correlation is all there is to look at.