Nuts are defined as dry, single-seeded fruits with a high oil
content, enclosed in a tough outer layer. Many seeds also fall
into this category (such as sunflower and safflower). Some, like
peanuts, fit more than one description (both a legume and seed).
For the purpose of simplicity, in this article we will include
all species commonly referred to as "nuts" and "seeds,"
regardless of their specific category. Nuts and seeds were an
important energy and nutrient source throughout history. Almonds
and pistachio nuts are mentioned as far back as biblical times,
and references to other nuts and seeds abound in the literature.
Historians hypothesize that ancient societies (about 10,000
years ago) centered on the harvesting of nuts, which may then
have fostered agriculture. Predictable growth (nuts grow on
trees), long storage life (especially during winter), and
generous nutrient profiles are all advantages of nuts to ancient
cultures. Interestingly, ancient Romans gave sugared almonds as
gifts at weddings, and th