The legacy of the Song-era duotek method — β-glucan (lentinan), eritadenine, and UV-activated vitamin D2.
vitamin-d-source
The freshwater omega-3 source — low mercury, high vitamin D, and the wild/farmed conversation.
The wild vs. farmed debate — astaxanthin-rich pigment, omega-3 concentrate, and global aquaculture.
The Atlantic HRC bomb — EPA/DHA concentrate, low mercury, and the Bang–Dyerberg story.
The "smoky" omega-3 concentrate — high EPA/DHA, outstanding vitamin D, and the Japanese sushi tradition.