Black walnuts are higher in protein than English walnuts. 24.1 g per 100 g versus ~15 g. Total fat still runs 59.3 g and 619 kcal per 100 g. A 49-RCT meta-analysis (Morton et al., Br J Sports Med 2018) places protein benefits plateau at 1.6 g/kg/day; walnuts add protein alongside their fat calories. Weigh the ration; a handful is easily 200 kcal.
How should I track Walnuts, black, dried?
Walnuts, black, dried is high in magnesium. Nuts like Walnuts, black, dried are one of the easiest foods to overeat. Research on portion estimation (Almiron-Roig et al., Appetite 2013) found that people underestimate calorie-dense foods by 50–200% when eyeballing portions. A small handful can easily be 300+ calories. The best habit: pre-portion into 30 g bags or use a scale each time. Also check whether your nuts are raw, roasted, or roasted-in-oil — the roasted-in-oil versions add extra fat that is not in the raw nutrition values.