14 Foods to Avoid (or Limit) on a Low-Carb Diet
A low-carb diet can help you lose weight and control diabetes and other conditions.
Some high-carb foods obviously need to be avoided, such as sugar-sweetened beverages, cake and candy.
However, figuring out which staple foods to limit is more challenging.
Some of these foods are even relatively healthy, just not suitable on a low-carb diet because of their high amount of carbs.
Your total daily carb target will also determine if you need to limit some of these foods or avoid them altogether. Low-carb diets typically contain 20–100 grams of carbs per day, based on personal tolerance.
Here are 14 foods to avoid or limit on a low-carb diet.
1. Bread and Grains
Bread is a staple food in many cultures. It comes in many forms, including bread loaves, rolls, bagels and flatbreads, such as tortillas.
Unfortunately, all of these are high in carbs. This is true for whole-grain bread as well as bread made from refined flour.
Although carb counts vary based on ingredients and portion sizes, here are the average counts for popular breads:
- White bread (1 slice): 14 grams of carbs, 1 of which is fiber (1).
- Whole-wheat bread (1 slice): 17 grams of carbs, 2 of which are fiber (2).
- Flour tortilla (10-inch): 36 grams of carbs, 2 of which are fiber (3).
- Bagel (3-inch): 29 grams of carbs, 1 of which is fiber (4).
Depending on your personal carb tolerance, eating a sandwich, burrito or bagel could put you near or over your limit for the day.
To make your own low-carb bread at home, follow one of the recipes on this page.
Most grains are also high in carbs and need to be limited or avoided on a low-carb diet. This includes rice, wheat, oats and others.
2. Some Fruit
However, many fruits are high in carbs and may not be suitable for low-carb diets.
A typical serving of fruit is one cup or one small piece. For instance, a small apple contains 21 grams of carbs, 4 of which come from fiber (8).
On a very low-carb diet, it’s probably a good idea to avoid some fruits, especially sweet fruits and dried fruits, which have high carb counts:
- Banana (1 medium): 27 grams of carbs, 3 of which are fiber (9).
- Raisins (1 oz / 28 grams): 22 grams of carbs, 1 of which is fiber (10).
- Dates (2 large): 36 grams of carbs, 4 of which are fiber (11).
- Mango (1 cup, sliced): 28 grams of carbs, 3 of which are fiber (12).
- Pear (1 medium): 28 grams of carbs, 6 of which are fiber (13).
Berries are lower in sugar and higher in fiber than other fruits. Therefore, small amounts (such as half a cup) can be enjoyed even on very low-carb diets.
3. Starchy Vegetables
Most diets consider vegetables a “free food.”
However, some high-starch vegetables contain many more digestible carbs than fiber and should be limited on a low-carb diet.
And if you’re following a very low-carb diet, your best choice is to avoid these starchy vegetables altogether:
- Corn (1 cup): 41 grams of carbs, 5 of which are fiber (17).
- Potato (1 medium): 37 grams of carbs, 4 of which are fiber (18).
- Sweet potato/yam (1 medium): 24 grams of carbs, 4 of which are fiber (19).
- Beets (1 cup, cooked): 16 grams of carbs, 4 of which are fiber (20).
Here’s a list of several low-carb vegetables you can enjoy freely on a low-carb diet.
Pasta is a versatile and inexpensive staple food, but it’s also very high in carbs.
One cup of cooked pasta contains 43 grams of carbs, only 3 of which are fiber (21).
Whole-wheat pasta is only a slightly better option at 37 grams of carbs, including 6 grams of fiber (22).
On a low-carb diet, eating spaghetti or other types of pasta isn’t a good idea unless you consume a very small portion, which isn’t realistic for most people.
It’s well known that sugary breakfast cerealscontain a lot of carbs.
However, you may be surprised at the carb counts of healthy cereals.
Steel-cut oats are less processed than other types of oatmeal and generally considered healthier. However, a mere half cup of cooked steel-cut oats has 29 grams of carbs, including 5 grams of fiber (24).
Whole-grain cold cereals tend to be even higher in carbs. A half cup of granola cereal contains 37 grams of carbs with 7 grams of fiber. The same amount of Grape Nuts cereal packs a whopping 46 grams of carbs with 5 grams of fiber (25, 26).
Depending on your personal carb goal, a bowl of cereal could easily put you over your total carb limit for the day— even before milk is added.
Alcohol can be enjoyed in moderation on a low-carb diet. In fact, dry wine has very few carbs and hard liquor has none.
However, beer is fairly high in carbs.
What’s more, studies show that consuming carbs in liquid form tends to promote weight gain more than getting carbs from solid food.
That’s because you don’t compensate for those liquid carbs by eating less later (29).
7. Sweetened Yogurt
Yogurt is a tasty, healthy and versatile food. Although plain yogurt is fairly low in carbs, many people tend to eat fruit-flavored, sweetened low-fat or nonfat yogurt.
Unfortunately, sweetened yogurt often contains as many carbs as a dessert.
However, choosing a half cup of plain Greek yogurt topped with a half cup of blackberries or raspberries will keep digestible carbs under 10 grams.
Juice is one of the worst beverages you can drink on a low-carb diet.
Although it provides some nutrients, fruit juice is very high in fast-digesting carbs that cause your blood sugar to increase rapidly.
For instance, 12 ounces (368 grams) of unsweetened apple juice contain 48 grams of carbs. This is even more than soda, which has 39 grams. And unsweetened grape juice provides a whopping 60 grams of carbs per 12-oz serving (32, 33, 34).
Even though vegetable juice doesn’t contain nearly as many carbs as fruit juice, a 12-ounce serving still has 16 grams of carbs, only 2 of which come from fiber (35).
What’s more, juice is another example of liquid carbs that your brain’s appetite center doesn’t process in the same way as solid carbs. Drinking juice can lead to increased hunger and food intake later in the day (29).
9. Low-Fat and Fat-Free Salad Dressings
A wide variety of salads can be enjoyed regularly on a low-carb diet.
However, commercial dressings often end up adding more carbs than you might expect, especially low-fat and fat-free varieties.
Many people commonly use more than two tablespoons, particularly on a large entree salad. To minimize carbs, dress your salad with a creamy, full-fat dressing.
10. Beans and Legumes
Beans and legumes are nutritious foods.
Although they’re high in fiber, they also contain a fair amount of carbs. Depending on personal tolerance, you may be able to include small amounts on a low-carb diet.
Here are the carb counts for one cup (160–200 grams) of cooked beans and legumes:
- Lentils: 40 grams of carbs, 16 of which are fiber (44).
- Peas: 25 grams of carbs, 9 of which are fiber (45).
- Black beans: 41 grams of carbs, 15 of which are fiber (46).
- Pinto beans: 45 grams of carbs, 15 of which are fiber (47).
- Chickpeas: 45 grams of carbs, 12 of which are fiber (48).
- Kidney beans: 40 grams of carbs, 13 of which are fiber (49).
11. Honey or Sugar in Any Form
You’re probably well aware that foods high in sugar — such as cookies, candy and cake — are off-limits on a low-carb diet.
However, you may not realize that “natural” forms of sugar can have as many carbs as white sugar. In fact, many of them are even higher in carbs.
Here are the carb counts for one tablespoon of several types of sugar:
- White sugar: 12.6 grams of carbs (50).
- Maple syrup: 13 grams of carbs (51).
- Agave nectar: 16 grams of carbs (52).
- Honey: 17 grams of carbs (53).
What’s more, these sweeteners provide little to no nutritional value. When carb intake is limited, it’s especially important to choose nutritious, high-fiber carb sources.
To sweeten foods or beverages without adding carbs, choose one of these healthy sweeteners instead.Bottom Line: Avoid sugar, honey, maple syrup and other forms of sugar, which are high in carbs but low in nutrients.
12. Chips and Crackers
Chips and crackers are popular snack foods, but their carbs can add up quickly.
One ounce (28 grams) of tortilla chips contains 18 grams of carbs, only one of which is fiber. This is about 10–15 average-size chips (54).
Crackers vary in carb content, depending on processing. However, even whole-wheat crackers contain about 19 grams of carbs per ounce, including 3 grams of fiber (55).
Processed snack foods are typically consumed in large quantities within a short period of time. It’s best to avoid them, especially if you’re on a carb-restricted diet.
Milk is an excellent source of several nutrients, including calcium, potassium and several B vitamins.
If you’re only using a tablespoon or two in coffee once a day, you may be able to include small amounts of milk in your low-carb diet.
However, cream or half and half are better options if you consume coffee more frequently since these contain minimal amounts of carbs.
If you enjoy drinking milk by the glass or use it to make lattes or smoothies, consider trying unsweetened almond or coconut milk instead.
14. Gluten-Free Baked Goods
Gluten is a protein found in wheat, barley and rye.
Gluten-free diets have become very popular in recent years, and are required for people who have celiac disease.
Celiac disease is an autoimmune condition in which the gut becomes inflamed in response to gluten.
Because gluten may also be linked to a few other diseases and symptoms, some people without celiac disease may feel better if they avoid gluten (59).
That being said, gluten-free breads, muffins and other baked goods are not typically low in carbs. In fact, they often contain even more carbs than their gluten-containing counterparts.
What’s more, the flours used to make these foods are typically made from starches and grains that tend to raise blood sugar rapidly (60).
Sticking to whole foods or using almond or coconut flour to make your own low-carb baked goods is a better strategy than consuming processed gluten-free foods.
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