@ryusei
I already dislike tomatoes, so learning about the solanine content in potatoes basically justified limiting nightshade intake in general.
(This probably helps my weight: I convince myself that eating potatoes has a risk of giving me instant neurological damage, and it keeps me from the very real eventual damage to my health that eating too many french fries will produce.)
Eggplant intake doesn't need to be managed because who eats a whole plate of that daily anyhow?