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Ingredients to avoid on a low-carb or keto diet
, medical review by Dr. Andreas Eenfeldt, MD
If you can keep the bad ingredients out of your cart, you set yourself up for low-carb or keto success. Avoid these four key ingredients when buying packaged goods: sugar, starch, bad fats, and sugar replacements.
Print this list and bring it with you to the market.
1. Avoid sugar
Why are there so many names for sugar? This is one of the games that Big Food plays. If food manufacturers call sugar something else, you will be less likely to recognize it and more likely to buy.
Some food manufacturers will even use a couple of different kinds of sugar in a product so it will have less of each kind. That way, they can list the sugary ingredients farther down on the ingredient list, so buyers won’t know how much sugar is in there. Tricky, right?
What might sugar be called in the ingredient list on packaged foods?
Barbados sugar
Beet sugar
Brown sugar
Cane sugar
Castor sugar
Coconut sugar
Coconut palm sugar
Confectioner’s sugar
Corn Sugar
Date sugar
Demerara sugar
Golden sugar
Granulated sugar
Grape sugar
Icing sugar
Invert sugar
Muscovado sugar
Palm Sugar
Powdered sugar
Raw sugar
Turbinado sugar
Yellow sugar
Brown rice syrup
Buttered syrup
Carob syrup
Corn syrup
Corn syrup solids
Golden syrup
High fructose corn syrup
High maltose corn syrup
Malt syrup
Refiner’s syrup
Rice syrup
Sorghum syrup
Barley malt
Cane juice
Cane juice crystals
Caramel
Dehydrated cane juice
Evaporated cane juice
Diastatic malt
Florida crystals
HFCS
Malt
Muscovado
Panocha
Rapadura
Scant
Treacle
Sometimes special sugars (other than sucrose) are listed by their scientific name. And sometimes sugar finds it way into your food as a natural ingredient, like maple syrup. So watch for these possibilities, too:
Dextran
Dextrose
Diatase
Disaccharides
Ethyl maltol
Fructooligosaccharides
Fructose
Galactose
Glucitol
Glucose
Glucose solids
Isoglucose
Lactose
Levulose
Maltodextrin
Maltose
Saccharose
Agave nectar
Blackstrap molasses
Coconut nectar
Dates
Dried Fruit
Fruit juice
Fruit juice concentrate
Honey
Maple syrup
Molasses
2. Avoid starch
So watch for ingredients like these and keep products made with them out of your cart:
Amaranth
Barley
Buckwheat
Corn
Oats
Millet
Rice
Rye
Quinoa
Sorghum
Teff
Wheat
Wild Rice
Bulgar
Bran
Burghul
Couscous
Durum
Einkorn
Emmer
Farina
Farro
Flour
Graham flour
Kamut
Orzo
Semolina
Spelt
Triticale
Wheat berries
White flour
Arrowroot
Cornmeal
Cornstarch
Cassava
Chickpea flour or Gram
Cottonseed
Dal
Fava bean
Inulin
Lentil
Manioc
Modified starch
Powdered cellulose
Potato
Sago
Taro
Soy
Tapioca
Plantain or Banana
Mesquite
Starchy vegetables
Sweet potatoes & yams
Vegetable starch
Worried about baking without grains? Fear not. Low-carb baking is still possible with ingredients like almond flour, coconut flour, and psyllium husk powder. Check out our guide low-carb baking 101, to learn more.
For help finding low-carb nut flours and other specialty items, check out our guide on how to shop for low-carb extras online.
You might want to check out our low-carb bread recipes, too.
3. Avoid bad fats
All fats are not created equal. Reviewing the ingredient list on products at the supermarket — before you buy — can help you eat more healthy naturally-occurring fat and avoid artificial trans fats and processed vegetable oils.
We encourage you to completely avoid artificially produced trans fats, usually listed as “partially hydrogenated” oil or vegetable shortening. In addition, we suggest you minimize margarine and the highly processed vegetable oils listed below. These oils are produced in a factory with high heat, solvents, deodorizers, and bleach. They are products of food science and are particularly unstable when heated. Avoid them if you can.
Diglycerides
Hydrogenated anything
Interesterified oils
Margarine
Monoglycerides
Partially hydrogenated anything
Shortening
Vegetable shortening (like Crisco)
Canola
Corn
Cottonseed
Grapeseed
Rice Bran
Safflower
Soybean
Note that for avoiding trans fat, the ingredient list is a better guide than the nutrition facts label. Artificial trans fats may be present in small amounts, up to 0.49 grams per serving, and the nutrition facts label will still show 0g trans fat. Small amounts can add up, especially when serving sizes are small, so check the ingredients before assuming a product is trans fat free.
And don’t worry about the small amounts of naturally occurring trans fats in some whole foods like meat and butter. It is the artificial trans fats that we need to avoid. So, again, the ingredient list is more informative than the nutrition facts label when it comes to trans fat.
Read more about fats in our guide — Healthy fats on a keto or low-carb diet. And while you are at it, why not check out our guide to eating more of the right kinds of fat — The top 10 ways to eat more fat.
4. Avoid sugar replacements
Here are the names of sugar replacements you might see on an ingredient list:
Erythritol
Glycerol
Isomalt
Lactitol
Maltitol
Mannitol
Sorbitol
Xylitol
Acesulfame K
Alitame (Aclame)
Aspartame (NutraSweet)
Cyclamate (Sucaryl)
Neotame
Saccharin (Sweet ‘N Low)
Sucralose (Splenda)
Stevia
Monk Fruit (Luo Han Gul)
Want more information about the differences among these sugar replacements? Then check out this detailed listing with helpful information on dozens of products.
That’s it! Now you have better awareness of the names of ingredients that don’t fit your low-carb lifestyle. Print this list and take it along so you can hit the grocery aisles with resolve and confidence!
More
There are two companion guides with more information about navigating the grocery store and deciphering food labels. They are:
In addition, click through to our main keto foods guide, or our keto diet food list for real-food inspired grocery shopping!
For more basics, check out our simple but thorough beginner’s guide to the keto diet:
About the author
Jenni Calihan created the non-profit, Eat the Butter, to start a mother-to-mother conversation about diet and health. She advocates for real-food-more-fat eating, and has been feeding her family (four kids) for twenty years.
Dining out 
How to eat more fat 
Low-carb cheating 
No cooking
THANK YOU
https://www.dietdoctor.com/low-carb/sweeteners
And also one about the fats to use! Check out point 3.
https://www.dietdoctor.com/low-carb/how-to-eat-more-fat
It depends on the other ingredients, but flavor extracts in general are safe for keto.
Generally yes, as long as it's unsweetened. Make sure to read ingredient labels to make sure there aren't any undesirable ingredients.
In Ireland, the fiber is showed separately from the carbs. Just go with what is on the carbohydrate line as we would subtract the fiber out anyway.
Sucralose is an artificial sweetener that we recommend avoiding. It is listed in the Sweeteners section above, which also has a link to our full guide on sweeteners.