Another reason he said blackberries are increasing in popularity is their health benefits. Carin Booth, family and consumer sciences extension agent at the University of Georgia Extension Office in Hall County, said those benefits are something people are slowly starting to learn about, but aren’t widely known.
https://www.gainesvilletimes.com/life/blackberries-sweet-nutrient-filled-summer-treat/
Blackberries: The sweet, nutrient-filled summer treat