The diets react (see scores below)
Diet Ratings
Yam is a starchy root vegetable with ~20g net carbs per 100g cooked. Even small portions quickly exceed daily carb limits and will disrupt ketosis.
Yam is a starchy tuber vegetable that is entirely plant-based. It is a whole food with no animal products, derivatives, or processing aids involved in its cultivation or basic preparation.
Yams are tubers explicitly allowed in paleo diet. Nutrient-dense, lower glycemic index than white potatoes, rich in fiber and micronutrients. Unprocessed and available to hunter-gatherers.
Yam is a whole, unprocessed starchy vegetable rich in fiber, vitamins, and minerals. It aligns with Mediterranean emphasis on plant-based whole foods. However, yams are not traditionally Mediterranean; they are African/tropical. Modern Mediterranean diet principles support their inclusion as a healthy carbohydrate source.
Traditional Mediterranean diet relies on potatoes and other Mediterranean-origin starches; yams are not part of historical Mediterranean cuisine, though they fit modern interpretations of the diet's nutritional principles.
Yam is a plant-derived starchy tuber. All plant foods, including vegetables and tubers, are excluded from the carnivore diet. This is a foundational rule across all carnivore protocols.
Yam is a whole, unprocessed starchy vegetable with no excluded ingredients. It is a compliant carbohydrate source on Whole30.
Yam (Dioscorea species) is a starchy tuber tested by Monash University and rated low-FODMAP at standard servings (approximately 150g cooked). It is a safe carbohydrate source during the elimination phase, distinct from sweet potato.
Yam is a starchy vegetable rich in fiber, potassium, manganese, and vitamin C. DASH guidelines approve starchy vegetables as part of the 4-5 daily vegetable servings. Whole yam (not processed) provides sustained energy and micronutrients. Lower glycemic impact than refined grains due to fiber content.
Yam is a starchy vegetable with moderate glycemic index (approximately 54 GI) and higher carbohydrate density than preferred Zone vegetables. One medium yam (~100g) contains approximately 27g carbohydrates, requiring careful portioning to fit carb blocks. While lower-glycemic than white potato, it is classified as an 'unfavorable' carbohydrate in Zone terminology. Usable in small portions if balanced with lean protein and monounsaturated fat.
Some Zone practitioners treat yam more favorably than white potato due to lower glycemic index and micronutrient profile (vitamin A, potassium). However, Dr. Sears' published guidelines recommend prioritizing non-starchy vegetables and limiting starchy carbohydrates to 0-1 block per meal.
Yam is a starchy root vegetable rich in fiber, antioxidants (including diosgenin and polyphenols), vitamins (B6, C), and minerals (potassium, manganese). The fiber content moderates glycemic impact compared to refined starches. Yams contain anti-inflammatory compounds and support gut health through resistant starch (when cooked and cooled). They align with anti-inflammatory diet principles emphasizing whole plant foods. Yams are less inflammatory than refined grains and provide sustained energy without sharp blood sugar spikes.
Yam is a starchy vegetable with moderate fiber (3-4g per 100g cooked) and minimal protein. While nutrient-dense compared to refined starches, it is calorie-dense relative to protein content and may cause bloating or delayed gastric emptying in some GLP-1 patients due to its starch load. Portion control is essential; small servings paired with protein are recommended.
Some RDs view yams favorably for their resistant starch content and prebiotic properties, which support gut health; others recommend limiting starchy vegetables early in GLP-1 therapy to prioritize protein and non-starchy vegetables.
Nutritional profile
Six traits that cut across every diet.
Fiber & Plants
How much whole-plant food and fiber it delivers.
Healthy Fats
The quality of its fats (unsaturated, omega-3).
Whole / Unprocessed
How close it is to its natural, unprocessed form.
Gut Gentle
How easy it is on digestion (low FODMAP, few irritants).
Low Glycemic
How little it spikes your blood sugar.
Protein Density
How much protein it packs per calorie.
Controversy Index
Score range: 1–10/10. Higher controversy = more disagreement between diets.
Diet-Specific Tips for Yam
Vegan — 10/10- Whole plant food
- No animal products or derivatives
- Nutrient-dense carbohydrate source
- Minimal processing required
Paleo — 8/10- Tuber
- Unprocessed
- Lower anti-nutrients
- Nutrient-dense
Mediterranean — 8/10- Whole plant food
- Starchy vegetable
- High fiber
- Nutrient-dense
- Not traditionally Mediterranean
Whole30 — 10/10- Whole vegetable
- Starchy carbohydrate
- No excluded ingredients
Low-FODMAP — 8/10- Monash-tested and approved at standard servings
- Starchy tuber with low FODMAP content
- Safe carbohydrate alternative to wheat
DASH — 8/10- High fiber content
- Rich in potassium
- Starchy vegetable category
- Low sodium
- Whole food form
Zone — 4/10- Moderate glycemic index (54)
- Higher carbohydrate density
- Starchy vegetable classification
- Requires portion control
- Better than white potato but not preferred
Anti-Inflammatory — 7/10- High fiber (resistant starch when cooked and cooled)
- Antioxidants (diosgenin, polyphenols)
- Vitamins B6 and C
- Moderate glycemic impact
- Supports gut health
GLP-1 Friendly — 5/10- low protein
- moderate fiber
- starch-heavy
- calorie-dense relative to protein
- may cause bloating in sensitive patients