Pine is a Green food. Green foods are safe to eat as a regular part of a diet.
Guideline related quotes related to Nuts and Green throughout Geoff Bond's publications.
Around half the weight of a nut is oil, much of it omega-6 fatty acids. Nuts are therefore caloriedense and tend to upset the omega-3 to omega-6 balance. For these reasons, nuts should be consumed in moderation. ~Paleo in a Nutshell p.41
All tree nuts are acceptable sources of good protein, as well as products made from them ~Paleo in a Nutshell p.48
Nuts are a natural food for humans to be consuming. All tree nuts are generally fine. ~Paleo in a Nutshell p.72
Nuts should be raw and fresh. ~Paleo in a Nutshell p.72
For Green and Green-Green categories, All nuts must be fresh, raw, and unsalted. ~Paleo in a Nutshell p.73
Examples of one serving include 1/3 cup nuts; 2 tablespoons almond, cashew, etc. butter (not peanut butter). ~Paleo in a Nutshell p.95
For nuts group, Consume at least three servings of “Green” foods per week. ~Paleo in a Nutshell p.103
For nuts group, Restrict total nuts servings per session to one. ~Paleo in a Nutshell p.103
For nuts group, Restrict total nuts servings per day to two. ~Paleo in a Nutshell p.103
Nuts are often called "tree-nuts" to distinguish them from the peanut, which grows underground and is a legume. ~Deadly Harvest p.64