He recently wrote about studies showing that fish is not as healthy as once thought.
Researchers writing in JAMA Network Open revealed that a fish diet DOES NOT protect the heart.
Also; JAMA Network Open indicated that a fish diet does not protects the heart. Examining 500-year-old remains of Greenland Inuits, they found atherosclerosis—common heart disease—in individuals who were 30 years old or less at the time of death.
Here is the post from Dr. Barnard.