Bilbren
What about sardines?
This Silicon Valley boffin eats 5 tins a day. Cheaper than salmon and not filled with red dye like some fish farms use.
https://www.cnbc.com/2016/10/11/why-...every-day.html
An interesting one is if you google Dr Brownstein USA followed by iodine treatment and most medical condition. From 1820 till antibiotics came on scene Lugols iodine receipe was used to treat everything. Topical iodine with isopropyl alcohol base can't be bought in UK pharmacies but can be bought at agricultural stores and horse shops no problem.