Avocado oil can do the trick also. It has omegas in it. Use it as a moisturizer.
Now about this study. I think they’re correct. If those fish and nuts come from China, then yes, it won’t decrease heart disease.
I used to give my dog sardines. His coat was beautiful. Then for some reason I stopped till I noticed his coat was yuckie. I started giving him the sardines but his coat did not improve. I thought he was ill or something. Then I looked closely at the tin of sardines. Horrors!!! imported from China. I changed brands and my dog’s coat improved. I hope my dog forgives me for buying “cheap” sardines.
Avocados are my favorite. They are saying that we can do best by getting our bodily needs from the things we eat. Your dog proved it.