What is Solanine and Why are Nightshade Vegetables Harmful?

Solanine is a poisonous substance that occurs naturally in potatoes and other members of the nightshade family,
such as tomatoes, peppers, tobacco, goji berries and eggplants. A very small amount of solanine can be toxic,
and in very large doses it can be fatal.

Most animals, including humans, have learned the lesson and learned to leave nightshades alone.
Leaves, roots, flowers, stems, and fruits can all contain solanine in varying levels.

It is now apparent that there are groups of people who cannot tolerate nightshades in their diets,
wish to avoid them anyway or find that eliminating them helps alleviate a variety of mental,
emotional and physical problems.

The following links will provide more information on these poisonous vegetables.