Pistachios have 10.6 g fiber per 100 g – among the highest for tree nuts. The shells slow eating — an RCT (Kennedy-Hagan et al., Appetite 2011) found in-shell pistachios led to 41% fewer calories consumed. Pistachios contain gut-fermenting carbs, so large servings may cause bloating in sensitive individuals. Buy in-shell and weigh the shelled portion.
How should I track Pistachios?
Pistachios is high in fiber. Nuts like Pistachios 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.