Crispy, mildly sweet root vegetable. Eaten raw — the crisp, apple-water chestnut texture is lost when cooked. One cup provides 6g dietary fiber (mostly inulin — the most powerful prebiotic fiber available), 40% DV vitamin C, and is very low in calories (49 cal/cup) and glycemic index. Inulin specifically feeds Bifidobacteria and Lactobacillus — the most beneficial probiotic families.
Available at Latin, Caribbean, and Asian markets. Whole Foods and some mainstream stores in diverse areas. Very affordable.
Inulin is the most selective prebiotic fiber for Bifidobacteria — the probiotic family most associated with immune function, reduced anxiety, and protection against colon cancer. A 2015 RCT found inulin supplementation significantly increased Bifidobacterium counts by 600-800% in participants — more than any probiotic supplement studied in the same paper. Jicama provides this inulin in a raw, crunchy, snack form that replaces chips. For calcium absorption: inulin fermentation in the colon produces short-chain fatty acids that lower intestinal pH, increasing calcium absorption by 20-25% — making jicama one of the only vegetables that increases the bioavailability of calcium from other foods in the same meal. Very low glycemic index — the inulin is fermented rather than digested, producing no glucose impact.
Peel the brown skin and fibrous layer beneath it (thick peeling required). Slice into sticks or cubes. Eat raw. Toss with lime juice + chili + salt (Mexican elote-style preparation). Add to salads for crunch. Use as a chip substitute for dipping.
Free, no account needed to ask.