It is not always easy to determine which foods can be eaten on the paleo diet. For the die hard followers of the diet, the rule is to eat only foods that our ancestors had at their disposal, however, we now have a larger advantage than our ancestors in that we have the ability to consume a greater variety of nutritious fruits and vegetables and use them to create a nutritionally rich diet.
It is important to note, however, that starchy tubers, usually not recommended for inclusion in the paleo diet, are toxic if not cooked, have a high glycemic index, are low in phytosterols, while also containing enzyme blockers and lectins. Sweet potatoes (yams) have a higher nutritional value than potatoes and some other tubers and are recommended as an alternative ‘power’ source for specific nutritional requirements high in carbohydrates - as for athletes.
Fruits are acceptable for inclusion in the paleo diet, but should be consumed in moderation to avoid high carbohydrate intake and provide the body with an overload of fructose sugar and excess carbohydrates.
Nuts and seeds should be consumed in moderation, as it would have been to our hunter-gatherer too.