yam bean
Vegetables
Is yam bean high in nightshades?
Is yam bean high or low in nightshades? See its exact rating, how much counts as a portion, and its FODMAP, salicylate, oxalate and diet compatibility in one place.
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Compare yam bean across criteria
Sensitivity notes
Why nightshades food checker matters
Nightshades are a plant family including tomatoes, peppers, eggplants, and potatoes. Some people find that avoiding nightshades helps with joint pain, digestive issues, or inflammatory conditions, though research is limited.
- Complete elimination for 30 days gives the clearest picture
- Watch for hidden nightshades in spice blends and sauces
- Paprika and cayenne are nightshades often overlooked
- Sweet potatoes are NOT nightshades - they're safe
- Goji berries are nightshades
Sensitivities
What yam bean contains
FODMAPs
Histamine & Amines
Plant compounds
Irritants
Additives
Allergens
Diet fit
Where yam bean fits
Therapeutic diets
Lifestyle diets
Religious diets
What to know about yam bean
The yam bean is neither a yam nor a bean you eat, and both halves of that name mislead in ways that matter. It is Pachyrhizus erosus, a vine in the pea family whose swollen root is the only food part: crisp, wet, faintly sweet, eaten raw in Mexico and across Southeast Asia. The pods and mature seeds that give it the bean half of its name contain rotenone and are genuinely toxic, historically used as a fish poison and a garden insecticide. The root itself is clean on the sensitivity chemistry, grading A for galacto-oligosaccharides, lactose, gluten, dairy protein, caffeine, sulfites and nitrites, with histamine, salicylate, oxalate, tyramine and nickel all mild at B. The one real gut caveat is fructans, which grade D here, alongside a D for total FODMAPs, so the trigger to watch is fructan load rather than anything chemical.
Watch for
- Fructans grade D and total FODMAPs grade D, so the storage sugars in the root are the thing to log.Galacto-oligosaccharides, polyols and excess fructose are all clean, which is unusual for something in the pea family
- Only the root is food.The pods, the mature seeds and the vine carry rotenone, and eating the seeds is a real poisoning risk rather than a folk warning. If you buy it whole or grow it, discard everything except the tuber
- It travels under a confusing pile of names: yam bean, Mexican turnip, sengkuang, bengkoang, sa kot, jicama.Log it under one name consistently or your own history will not add up
- Nothing else scores high.Histamine, salicylate, oxalate, tyramine, nickel and free glutamate all sit at B, so if you react hard and fast to this root, suspect what it was dressed with, typically chilli, lime and salt
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Nightshades Guide
Everything you need to know about nightshades sensitivity and smart food choices.
Nightshades are a plant family including tomatoes, peppers, eggplants, and potatoes. Some people find that avoiding nightshades helps with joint pain, digestive issues, or inflammatory conditions, though research is limited.
Sensitivity varies widely. What triggers one person may be fine for another. Track your reactions to find your personal threshold.
These foods are generally well-tolerated for Nightshades sensitivity:
View all safe options
These foods have moderate levels and may be tolerated in small amounts:
These foods are high in nightshades and may trigger symptoms:
View full list
If you're sensitive to Nightshades, consider these strategies:
- 1Complete elimination for 30 days gives the clearest picture
- 2Watch for hidden nightshades in spice blends and sauces
- 3Paprika and cayenne are nightshades often overlooked
- 4Sweet potatoes are NOT nightshades - they're safe
- 5Goji berries are nightshades
Pro tip: Keep a food diary to track your reactions. The Triggerbites app makes this easy with automatic pattern detection.
Want personalized tracking?
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Get the AppFAQ
Is yam bean high in Nightshades?
Nightshades: low signal for most people.
Can I still eat yam bean if I'm sensitive to Nightshades?
Usually fine in normal portions.
What else should I check?
Check Jain, FODMAPs, and Fructans next for a fuller picture.