Brazil nut tree (Bertholletia excelsa H.B.K., in Lecythidaceae family) is an Amazonia native majestic tree, whose trunk is up to 4 m (13,12 ft) diameter and 30 -50 m (98 - 164 ft) tall, exceptionally reaching 60 m (197 ft).
     Its fruit, the chestnut bur, has a very hard woody shell weighing from 700 to 1,500 g, which contains from 12 to 15 nuts still unshelled. Nuts are harvested from December (in some regions) through May.
     Brazil nut tree is known as the "Queen of the Forest".
     It propitiates a perfect social-ecological interaction, bringing great benefits to human beings, not harming the environment.
     It provides income and jobs for thousands of people: from the forest natives (caboclos), responsible for the harvest, to the people working in its transportation, and processing factories, where women prevail.
     Being an extractivism product, i. e., a product not causing destruction, it doesn't contribute to forest devastation, and the caboclo, who survives in the forest, is the first person to preserve it.
     Another highly positive ecological factor favoring the Brazil nut tree is that not needing chemicals or any other fertilizers but the forest itself, its products are 100% natural, condition preserved during the whole processing cycle.
     Worldwide magazines both specialized or not, such as the Spanish The Cracker and the Brazilian Veja and IstoÉ highlight the benefits of diet programs including Brazil nuts, important for heart disease and cancer prevention, bad cholesterol reduction and good cholesterol raise.