by Kristina Moses
© January 2018

Please note that this is a relatively new field. Research is ongoing and there are new discoveries still being made. We try to keep this section as up-to-date as we can.

What are lectins?

Lectins are a group of proteins found in most plant foods. Because lectins transfer when eaten, even animals that eat high-lectin foods will have those lectins in their meat! It is believed that plants evolved to have lectins as a defense against being eaten – or in cases such as unripe fruit, simply being eaten at the wrong time.

Why should we avoid lectins?

Not all lectins are bad. One of the problems that we have today is that we are eating more lectins than ever before. Modern farming techniques give us year-round access to handfuls of foods we previously would have only had seasonally, or could only harvest a small amount of.

Today, we have far too much access to “bad lectins”, some of which can cause inflammation all over the body and may even trigger autoimmune disorders. Some lectins can also have toxic reactions in nerves and other cells, interfere with nutrient absorption in the gut, and affect blood pressure. They can even cause hormone disruption, pain and weight gain.

According to Dr. Gundry, author of The Plant Paradox, the type of lectins found in the seeds of the grass family induce heart disease in experimental animals. (The grass family includes wheat, corn, rice, oats, rye, teff, wild rice, etc..)

Because there are lectins in so many foods, it is impossible to completely avoid them; just do your best to reduce them wherever possible. The more symptoms and conditions you have, the more diligent you should be in avoiding them.

What foods contain lectins?

The following foods should be completely avoided as they have the highest lectin-levels: Corn, corn-fed meats and animal products, peanuts, cashews, red kidney beans, and soybeans (if they are not fermented). Casein A1 milk (which is most milk available today) is high in lectin-like proteins that are very damaging.

Other foods that are high in lectins are:

All legumes – nuts, beans, peas, lentils, etc.

Grains – barley, oats, rice (brown rice is even worse), spelt, rye, buckwheat, quinoa, wheat, etc.

Nightshades – all tomatoes, all potatoes (but not sweet potatoes), all peppers, eggplants, goji berries

Fruit (if it’s not local and picked at the peak of ripeness)

Members of the gourd family (squash, zucchini, pumpkin, etc.)

Are there ways to reduce lectins in foods that have high lectin content?

The lectin content of certain foods can be reduced by soaking, sprouting and cooking (particularly with a pressure cooker), or by removing the skins and seeds. See the below section on proper preparation and cooking for lectin-foods. If a person is struggling with very ill health, all high-lectin foods should be avoided completely, but if one is just having only mild symptoms then these can be properly prepared and eaten in small amounts.

Oddly, contrary to common practice in the holistic world, Dr. Gundry suggests that opting for white rice over brown will also reduce your exposure to lectins. This is because the hull of the grain contains most of the lectins.

Are there foods that don’t have lectins?

When it comes to lectins, the best foods to eat are asparagus, garlic, onions, celery, mushrooms, cooked root vegetables (like sweet potatoes, yucca and taro), leafy greens, cooked cruciferous vegetables (like bok choy, broccoli, Brussels sprouts, cabbage, cauliflower, collard greens, radishes, turnips, etc.), olives and high-quality extra-virgin olive oil, a small amount of local and ripe fruit (it has to be ripe at the time of picking). Grass-fed meats and pasture-raised corn-free chicken are good in moderation. If you like and tolerate dairy, casein A2 milk, goat’s milk and buffalo milk are all good, as is organic raw cheese from grass-fed cows.

Remember that not all lectins are bad. Avocados contain high amounts of lectins, but these lectins are safe and even healthy.

See the list of lectin-free foods at the bottom of this article.

Proper Preparation and Cooking For Lectin-Foods

Sprouting

The lectins in some seeds, grains and beans are primarily in the seed coat. Sprouting “eats” the coat which dramatically reduces the lectins.

In general, the longer the sprouting continues, the more lectins are deactivated. There are some exceptions to sprouting. For instance, sprouting actually increases the lectins in alfalfa, therefore we recommend always avoiding alfalfa and alfalfa sprouts.

Soaking

This is probably the most traditional method of preparing beans, grains and other foods.

Beans – Soak the beans in water with baking soda for at least 12 hours. Change the water frequently, always adding more baking soda with each change of water. Rinse the bean really well before cooking. Bring the cooking water to a rapid boil and cook the beans for at least 15 minutes. The best cooking method for beans is a pressure cooker.

Cautions for beans: NEVER eat raw or undercooked beans. Never use water that beans have been soaking it; always discard it. Never eat beans that have been cooked at a low temperature (such as slow-cookers) as this can actually increase the toxicity of the beans. Do not use dry bean flour in recipes. Beans (and bean flour) have to be cooked with moisture to de-activate the lectins.

Acceptable Canned Beans: Eden Foods soaks, rinses and pressure-cooks their beans, so you can rinse, heat and eat them right out of the can. They also have traditionally fermented Miso, Shoyu and Tamari.

Grains, Potatoes and other foods – Put in a bowl of water and add baking soda. Soak overnight, and then rinse really well before cooking (preferably in a pressure-cooker).

Cooking

Dry heat (such as baking) will not reduce lectins. It has to be wet heat, such as boiling, steaming or pressure-cooking (which is the best of all cooking methods for lectin-removal). Pressure cooking will reduce the lectins in beans, tomatoes, potatoes, quinoa, and many other foods, but won’t be effective for wheat, rye, barley, spelt or oats. Avoid slow cookers for lectin-foods as the low temperature may actually increase some lectin content. Don’t use raw flours in baked goods unless they are sprouted.

Fermenting

When you ferment a food, the beneficial bacteria eat the lectins and other harmful substances. If you are going to eat soy products, eat only fermented soy like miso, tempeh, natto, etc. Traditional sourdough bread is an excellent example of fermented grains and is safest to eat (organic and gluten-free is best, such as Bread SRSLY which you can order online). Other health foods include many fermented vegetables like sauerkraut, kimchi, and fermented Brussels sprouts, beets, carrots, etc.

Peeling and De-seeding

For many foods, the seeds, skins and rinds are where the majority of the lectins are contained. Therefore, peeling and removing the seeds from foods like cucumbers, peppers, tomatoes and zucchinis may reduce the lectins sufficiently for you to eat them without suffering negative consequences. You can even remove the skin from almonds to decrease the lectin content. This is one of the reasons that white bread and white rice have fewer lectins than whole wheat bread and brown rice.

NOTE: These methods don’t completely remove all lectins, particularly in beans and nightshades, so if you are not experiencing relief from a reduced-lectin diet, try a completely lectin-free diet before giving up on this approach.

Click here for a printable version of the below food list.

Vegetables
Organic is best. Frozen is okay. Ideally more than half your vegetables should be cooked, and 70% of your diet should be vegetables. Eat a variety!

These vegetables should mostly be eaten cooked (occasionally raw is fine):
Arugula
Bok choy
Broccoli
Brussels sprouts
Cabbage (Green, Red, Napa and Chinese)
Cassava (in moderation)
Cauliflower
Collard greens
Daikon radishes
Kohlrabi
Mustard greens
Radishes
Rutabaga (in moderation)
Spinach
Sprouts (except alfalfa)
Sweet potatoes (in moderation) pressure-cooked only
Turnips (in moderation)
Turnip greens
Yams (in moderation) pressure-cooked only
Watercress

These vegetables can be eaten raw or cooked:
Artichokes
Asparagus
Basil
Beets
Beet greens
Carrot greens
Carrots
Celery
Celery root (in moderation)
Chicory
Chives
Cilantro
Dandelion greens
Endive
Escarole
Fennel
Garlic
Hearts of palm
Kimchi (raw)
Jicama (in moderation)
Leeks
Lettuce (Romaine, Butter, Red leaf and Green leaf)
Mesclun
Mint
Mizuna
Mushrooms
Nopales cactus
Okra
Onions
Parsley
Parsnips (in moderation)
Perilla
Purslane
Radicchio
Sauerkraut (raw)
Scallions
Swiss chard
Taro roots (in moderation)
Yucca (in moderation)


Proteins

Meats – up to 8 oz daily: Other Proteins:
Grass-fed grass-finished Beef
Lamb
Bison
Wild game
Venison
Boar
Pork
Elk
Pasture-Raised Chicken,
Turkey
Ostrich
Duck
Goose
Quail
Sardines
Anchovies
Pasture-Raised eggs
Organic Tempeh (grain-free only)
Organic Natto


Dairy
Organic is best. For cow’s milk products, only eat grass-fed cow products.

Brie (goat’s milk)
Butter (goat’s milk)
Butter (grass-fed French or Italian, as these are from casein 2 dairy)
Cheese (cow’s milk – 1oz only)
Cheese (goat, sheep or buffalo)
Cheese (high-fat French, Italian or Swiss, such as triple-cream brie)
Cream cheese
Ghee
Heavy cream
Kefir (goat’s and sheep’s milk)
Milk (Casein A2 only)
Mozzarella (from buffalo milk)
Sour cream
Yogurt (coconut)
Yogurt (goat, sheep or buffalo)
Yogurt (cow’s milk – 4oz only)


Other Foods

 
Oils – The best oils for cooking are Rice Bran oil, Light/Refined Olive Oils and clarified butter/ghee. Try to cook on low heat – do not let oils smoke. For non-cooking oils, grass-fed butter, and expeller- or cold-pressed olive, coconut, avocado, Flaxseed, Hemp seed, Macadamia, MCT, Perilla, Red Palm, Rice Bran, Sesame Seed, and Walnut Oils are the best. Always store oils in the refrigerator so that they don’t go rancid.

Fruit – Avocado is very good and you can eat up to 2 per week. Coconut is acceptable, but easy to overeat, so be moderate. You can sparingly eat: in-season berries, baobab fruit, green bananas or plantains, persimmon, green mango or papaya.

Sweeteners – Stevia, Chicory Root, Inulin, Luo han guo (Monk fruit), and Yacon are the best. Sugar alcohols such as Xylitol, Erythritol, etc. can be used as well, but work up slowly. Do not use sugar alcohols if you have seizures or other neurological issues. If a different sweetener must be used, raw honey and pure maple syrup are acceptable, but only in small amounts.

Nuts, Seeds & Legumes – Up to ½ cup per serving, no more than three servings per week: Macadamia, Walnuts, Pecans, Pistachios, Pine nuts, Brazil nuts (do not overeat Brazil nuts – no more than 14 per week), Chestnuts, Flaxseeds, Hemp seeds, Pecans, Pine nuts, Sesame Seeds, Tiger nuts, Hemp protein powder, Psyllium.

Flours and Grains – Up to ½ cup per serving, no more than three servings per week: Almond flour (not meal), Arrowroot, Cassava, Chestnut, Coconut, Grape seed, Green Banana, Hazelnut, Millet, Sorghum, Sesame, Sweet potato, Tapioca from cassava, Tiger nut.

Breads, Cereals, Noodles, Etc. – Cappello’s fettuccine, Pasta Slim, Miracle Noodle Shirataki noodles, Miracle Noodle Kanten pasta, Miracle Rice, Siete brand tortillas, Bread and bagels made with coconut flour by Bakery Paleo Wraps, and Paleo coconut flakes cereal in moderation are good options.

Desserts – So Delicious No Sugar Added coconut ice cream, Lily’s Chocolate and other dark chocolates (72% or greater with less than 4g of sugar per serving) in moderation are good options.

Alcohol – It is better to abstain, but if you have to drink: Champagne (one 6 oz glass per day), Red (one 6 oz glass per day), Aged spirits (1 oz.). Do not mix fruit or other sugary things into it.

Miscellaneous – All olives, mustard (without added sugar), all herbs, all seasonings, and all vinegars (without added sugar) are allowed.

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