The major form of thyroid hormone in the blood is thyroxine (T4), which has a longer half-life than T3. In humans, the ratio of T4 to T3 released into the blood is between 14:1 and 20:1. T4 is converted to the active T3 (three to four times more potent than T4) within cells by deiodinases (5'-iodinase).
Solanine is the toxin (Glycoalkaloid Poison) contained in all nightshade plants such as tomatoes, potatoes, and goji berries. It can occur naturally in any part of the plant, including the leaves, fruit, and tubers. Solanine has fungicidal and pesticidal properties. Again, it is one of the plantâs natural defenses.
(above: Cladogram showing the relationship between the three genera of the Solanaceae family) Hereâs the list that Iâve been gathering of foods that are nightshades or contain Solanine. I keep the list in an app on my phone so that I have it with me at the grocery store. Let me know if Iâm wrong about any of these. When youâre first starting the diet, looking at this huge list may be a bit overwhelming.