Good vs. Bad Carbs: Which Ones to Avoid (2024)

Many of us have a love-hate relationship with carbohydrates. We love that bagel in the moment, but hate the dip in energy (or breakout!) that follows.

What exactly is a carb? Carbohydrates are all composed of sugar, which can be connected to various health conditions, but our bodies do need carbs (just as they need protein and fat) to get us through the day. However, not all carbs are created equal.

Keep scrolling to learn how to separate the good carbs from the bad ones.

Complex vs. refined carbohydrates

When it comes to carbohydrates, it’s all about quality. The body uses all carbohydrates to produce glucose (also known as blood sugar) to help our organs do their thing and energize us throughout the day. When considering the quality of carbohydrates, the magic lies in how quickly your carb of choice is broken down into glucose. Glucose itself isn’t a bad thing, but getting too much glucose too quickly is when we get into trouble.

Refined carbohydrates like white flour go through a process which removes the “bulk,” such as fiber and other nutrients, from a food. The “simplification” of this food is what causes it to have a sudden effect on your body.

Unlike complex carbs that have fiber to act as a buffer, refined carbohydrates are broken down much faster. The result? All of that glucose hits your bloodstream like a sugar bomb, leading to a burst of energy and soaring blood sugar. In response to this spike, the hormone insulin springs to work, helping the body to store fat and signaling your cells to “store that glucose!” Before you know it, your blood sugar levels have tanked, leading to an energy slump, a crappy mood, and a craving for more sugar.

When rollercoaster blood sugar levels become a part of your daily life, this puts stress on your body, contributes to inflammation, and is correlated to health conditions like diabetes. This stress and inflammation can signal bad things to your hair follicles, getting in the way of the hair growth cycle.

In contrast, complex carbohydrates like whole grains generally pack a higher amount of fiber and a lower amount of sugar. These “nutrient buffers” ensure thatthe breakdown of glucose is more prolonged, allowing your body a more steady flow of energy and avoiding an unpleasant crash.

Carbohydrates, ranked from worst to best

4. THE WORST: Refined or processed carbohydrates

These are carbohydrates like white bread, white sugar, white flour pasta, and white rice that have been stripped of their blood-sugar-buffering fiber, as well as vitamins, minerals, and antioxidants, things both your body and hair are big fans of.

Alternatives: Whole-grain choices like brown rice, whole-wheat pasta and bread (especially breads with nuts and seeds), and pastas made with lentil, chickpea, or other beans. Flour is also available in a variety of more complex-carb forms, such as those made from whole-wheat, amaranth, chickpea, and almond.

Simple carbohydrates have the simplest structure compared to other carbs, meaning they’re broken down quickly by the body. These kinds of carbs — which include white sugar, brown sugar, high fructose corn syrup, concentrated juices, and sodas — have little to no fiber and little to no nutritional value, leading to blood sugar dysregulation. However, simple carbs can also be found in fruits and vegetables, which pack components like antioxidants, vitamins, minerals, and fiber to help slow the breakdown of sugar.

Alternatives: Instead of store-bought juice, try making your own using whole fruits. Swap sugary soda for plain seltzer, water, or drinks made with low-carb, more natural sweeteners like stevia and monkfruit.

2. Starches (complex carb)

Starch is a complex carbohydrate that gets turned into glucose for energy. High-starch foods like pizza, baked goods, and french fries should be avoided or limited, as they have been processed and thus contain less nutrients

Alternatives: Parsnips, quinoa, beans, whole-wheat grains, sweet potatoes, lentils and legumes (like peas). Craving pizza instead of vegetables? Try making your own with whole-wheat dough or even sweet potatoes!

1. THE BEST: Fiber (complex carb)

When it comes to carbs, it pays to be complicated. Put simply, complex carbohydrates have a more complicated chemical structure than other carb forms —and they take more time for the body to break down. Their high fiber content, found in whole grains, beans, nuts, and veggies like broccoli, is also key. During the digestive process, soluble fiber combines with water and turns into a gel-like goop, supporting healthy digestion and in turn assisting your gut flora; a win/win for both you and your hair!

When in doubt, it’s always a good idea to choose whole food options and to add some “complexity” to your carbs by ensuring you’re eating them with fiber, protein, or a healthy fat, as this will help buffer how quickly they’re broken down into sugar.

Written by Dr. Kali Olsen, ND

Good vs. Bad Carbs: Which Ones to Avoid (2024)

FAQs

Good vs. Bad Carbs: Which Ones to Avoid? ›

Nutrition experts divide carbohydrates into “good” and “bad.” Good carbs, like whole grains, brown rice and legumes, don't raise blood glucose quickly. Bad carbs, like white bread, cookies and sugary sodas, cause blood glucose to rise quickly.

Which carbohydrate should be avoided? ›

Which foods are high in carbohydrates to avoid? You should be careful of foods that are high in carbs but have little nutritional value. Although they taste good, limit your helpings of cakes, pastries, full-sugar sodas, candy, and refined starches (like white pasta, white bread, and white rice).

What is the number one worst carb? ›

1. Sugary Foods. Most people already think of many of the foods in this category as unhealthy treats. Candy, soft drinks, and sweet desserts such as cake, chocolate, and ice cream are all expected entries on a list of carbs to avoid to lose weight.

What is the healthiest carb to eat? ›

Try these healthy carb foods
  • Whole grains: Farro, quinoa, whole-grain breads and pastas, bulgar wheat, and brown or wild rice.
  • Starchy vegetables: Potatoes (preferably with the skin), green peas, corn and winter squash like butternut or spaghetti squash.

Which carb is worse for a person? ›

Simple carbs, which are the so-called “bad” carbs, consist of short chains of sugar molecules. They include sugar, honey and other sweeteners, and are also found in dairy products, fruit and fruit juices, and in highly processed foods.

What are 4 bad carb foods? ›

Carbs to Avoid, Plus Better Bets
  • Sugary drinks, sodas, and fruit juices. These often have added sugar. ...
  • White bread. Simply substitute your normal sandwich bread for a whole grain or whole wheat option.
  • Pasta. ...
  • French fries and potato chips. ...
  • Cookies, cakes, and pastries. ...
  • Candy, chocolate, and ice cream.
Oct 8, 2023

Is oatmeal bad carb? ›

With so much talk about so-called 'bad carbs', oats have been written off and cut from many diets. But the truth is, whole grain oats are a complex carbohydrate with nutritional benefits. A bowl of cooked oatmeal breaks down to become energy that's slowly absorbed by your body.

Are potatoes bad carbs? ›

They're also chock full of starch, which is a carbohydrate. But even though a potato is considered a complex “healthy” carb, your body digests these carbs faster than other kinds of complex carbs. These broken-down carbs flood your blood with sugar. This makes your blood sugar spike quickly.

What carbs should you avoid for belly fat? ›

"Eating refined carbs like bread, rice, pasta and cookies [in excess] will increase our belly fat. If we want to lose it, we should focus on eating nutrient- and fiber-rich carbs such as vegetables and low-glycemic fruits," says Djordjevic.

What is the 5 to 1 rule for carbs? ›

Here's how the 5:1 rule works. Simply look at the ratio of grams of carbohydrates to grams of dietary fibre. Divide the carbohydrates by the dietary fibre. You want a 5:1 ratio or less.

What carbs should I eat daily? ›

So if you get 2,000 calories a day, between 900 and 1,300 calories should be from carbohydrates. That translates to between 225 and 325 grams of carbs a day. You can find the carbohydrate content of packaged foods on the Nutrition Facts label.

What is the cleanest form of carbs? ›

Healthful, whole-food carbohydrate sources include:
  • sweet potatoes.
  • beetroot.
  • corn.
  • quinoa.
  • brown rice.
  • oats.
  • bananas.
  • apples.
Jul 19, 2022

Are fruits bad carbs? ›

Fruit has natural sugars that add to your daily carb count. It also has vitamins and minerals your body needs. This makes it one of the healthiest sources of carbs you can eat. Every 15 grams of carbs counts as one serving.

Are eggs high in carbs? ›

Eggs actually contain very little carbohydrate. In fact, an average egg provides just 0.7 grams of carbs. To put that into context, Australians on average consume around 310 grams of carbs daily. (1) Eggs contribute a very small amount to our daily carb intake; barely a gram!

Is pasta a bad carb? ›

Pasta is high in carbs, which can be bad for you when consumed in large amounts. It also contains gluten, a type of protein that causes issues for those who are gluten-sensitive. On the other hand, pasta can provide some nutrients that are important to health.

Which carbs should I avoid to lose weight? ›

A low-carb diet generally limits grains, legumes, fruits, breads, sweets, pastas and starchy vegetables, and sometimes nuts and seeds.

What are the unhealthiest sources of carbohydrates? ›

Carbohydrates that people may consider unhealthy because they are less nutritious include:
  • refined carbohydrates, such as polished rice and flour.
  • sugar-sweetened beverages, such as sodas and juices.
  • highly processed snacks, including cookies and pastries.
Sep 19, 2021

Which carbohydrate can you not digest? ›

Fiber is a type of carbohydrate that the body can't digest. Though most carbohydrates are broken down into sugar molecules called glucose, fiber cannot be broken down into sugar molecules, and instead it passes through the body undigested.

What carbohydrates should diabetics avoid? ›

Try to eat less of these: refined, highly processed carbohydrate foods and those with added sugar. These include sugary drinks like soda, sweet tea and juice, refined grains like white bread, white rice and sugary cereal, and sweets and snack foods like cake, cookies, candy and chips.

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