DHA is researched as having numerous benefits. I particularly like the published cognitive as well as longevity benefits. Lets make new versions.
Well DHA is 22 carbon atoms long with 6 C=C links. (thus they call DHA a 22:6 lipid) I think I have read that the greater membrane fluidity from the C=C
links permits greater lability or movement ability of the lipid. Supporting that idea is that cool dwellers like ocean fish make more highly fluid lipids as adaptions to their environment.
More C=C gives greater flexibility thus a 22:7 or 22:8 lipid is a mild start, going further we can figure out where to desaturate (place the C=C links).
When you think about it, the 3' or OH part actually link to particular cytostructures. Visualize a receptor or lipid raft that always associates with the 3' area. Possibly a G coupled protein receptor is particularly receptive if it is supported with highly flexible lipids (kind of like a bouncy seat on springs)
That has a hypermotional part right where the lipid associates with the receptor giving the receptor greater responsiveness. This is still a 22:6 lipid, so we might prefer to give the hypermotional area lipid all of the orginal area flexibility along its length creating
which is just DHA with a hypermotionarea at the 3' side
Or we could just create a Littler hydrocarbon
Fewer carbons make hydrocarbons as well as lipids more flexible. Thus It is possible that the more flexible 21:6 version of DHA, D21HA that has one fewer carbons may be even more effective.
Now it would be awesome to find either of these at nature to see if they can be mass produced as natural beneficial oils. There is an algae Anadyomene stellata
that makes a 22:7 that is variably saturated rather than hypermotional C=C=C=C DHA.
Note that when thinking of this as an invention, any of the "About 26,600 results" that google patents lists at DHA may thus be notably improved as technologies