Who’s taking fish oil supplements? People who are concerned for their health or people who are generally healthy? Observational studies like this seem much less useful than a dedicated study with properly allocated controls
Fish oil supplements come in a wide range of quality, and dose. And for the same reason that they are nutritionally beneficial, namely they are chemically labile, they also can go rancid readily.
Who’s taking fish oil supplements? People who are concerned for their health or people who are generally healthy? Observational studies like this seem much less useful than a dedicated study with properly allocated controls
Fish oil supplements come in a wide range of quality, and dose. And for the same reason that they are nutritionally beneficial, namely they are chemically labile, they also can go rancid readily.