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10 ‘Low-Fat’ Foods That Should Not Be Part of a Healthy Diet

Health + Wellness

By Franziska Spritzler

Many people associate the term "low-fat" with health or healthy foods. Some nutritious foods, such as fruits and vegetables, are naturally low in fat.

However, processed low-fat foods often contain a lot of sugar and other unhealthy ingredients.

Low-fat muffins are high in sugar and have a high glycemic index that may lead to hunger, overeating and weight gain.

Here are 10 low-fat foods that are bad for you:

1. Low-Fat Sweetened Breakfast Cereal

In some ways, breakfast cereal appears to be a healthy way to start your day.

For example, it's low in fat and fortified with vitamins and minerals. The packaging also lists health claims such as "contains whole grains."

However, most cereals are loaded with sugar. In the ingredients section, sugar is usually the second or third item listed, meaning it's present in large amounts.

In fact, a 2014 report by the Environmental Working Group found that the average cold breakfast cereal contains nearly 25 percent sugar by weight.

What's more, it's not just white table sugar that you should worry about. White sugar, brown sugar, high-fructose corn syrup and honey all contain fructose.

Excess amounts of fructose have been linked to an increased risk of obesity, heart disease, kidney disease, type 2 diabetes and other health problems (1).

Additionally, the "healthiest" low-fat cereals may be some of the worst offenders.

For example, half a cup (49 grams) of low-fat granola contains 14 grams of sugar. This means 29 percent of the total calories are sugar (2).

Bottom Line: Low-fat, sweetened breakfast cereals are high in sugar, including "healthy" varieties such as granola.

2. Low-Fat Flavored Coffee Drinks

Coffee is one of the healthiest beverages you can drink.

It contains antioxidants that protect heart health and is associated with a decreased risk of type 2 diabetes (3, 4).

Coffee also contains caffeine, which can improve mental and physical performance while increasing metabolic rate (5, 6).

On the other hand, the high sugar content of flavored low-fat coffee drinks can negatively affect health.

For example, a 16-oz (450-gram) nonfat mocha drink has only 2 grams of fat but a whopping 33 grams of sugar. That's 57 percent of total calories (7).

Not only does this beverage provide a hefty serving of fructose, but it's in liquid form, which seems to be especially harmful to health (8).

Liquid calories aren't as satisfying as calories from solid food. They promote a higher daily calorie intake that may lead to weight gain (9, 10).

Bottom Line: Adding sugar to coffee transforms a healthy beverage into one that may lead to weight gain and disease.

3. Low-Fat Flavored Yogurt

Yogurt has a long-standing reputation as a healthy food.

Studies show that plain yogurt may help with weight loss and improve body composition, in part by increasing levels of the fullness hormones GLP-1 and PYY (11).

However, low-fat, sugar-sweetened yogurt contains too much sugar to qualify as a nutritious choice.

In fact, many types of low-fat and nonfat yogurt are as high in sugar as desserts.

For example, 8 ounces (240 grams) of fruit-flavored, nonfat yogurt contains 47 grams of sugar, which is nearly 12 teaspoons. In comparison, an equivalent serving of chocolate pudding has 38 grams of sugar (12, 13).

Nonfat and low-fat yogurts also contain minimal conjugated linoleic acid (CLA), a compound found in dairy fat that may cause fat loss (14, 15).

Bottom Line: Plain yogurt made from whole milk is healthy, but sweetened low-fat yogurt can be as high in sugar as desserts.

4. Low-Fat Salad Dressing

Salad dressing enhances the flavor of raw vegetables and may improve a salad's nutritional value.

Traditional salad dressings are high in fat, which helps your body absorb the fat-soluble vitamins A, D, E and K.

In addition, fat helps you absorb antioxidants from foods such as leafy greens, carrots andtomatoes (16, 17).

In contrast, low-fat and fat-free salad dressings don't contribute any health benefits to your meal.

Most of them also contain sugar and preservatives.

While it's no surprise that sweet dressings such as honey mustard and Thousand Island are high in sugar, many others are also loaded with sugar or high-fructose corn syrup. This includes fat-free Italian dressing.

The healthiest salad dressings are made without sugar and contain natural fats such as olive oil, which provides benefits for heart health (18, 19, 20).

Bottom Line: Low-fat and fat-free salad dressings contain sugar and additives but lack the benefits of healthy fats like olive oil.

5. Reduced-Fat Peanut Butter

Peanut butter is a delicious and popular food.

Studies suggest that peanuts and peanut butter may have benefits for appetite control, body weight, blood sugar and heart health (21, 22, 23, 24).

It's high in monounsaturated fat, including oleic acid, which may be responsible for many of the benefits.

However, note that natural peanut butter contains only peanuts and perhaps salt.

By contrast, reduced-fat peanut butter contains sugar and high-fructose corn syrup.

What's more, although the total fat has been reduced from 16 grams to 12, some of the healthy monounsaturated fat has been replaced by processed vegetable oil.

The calorie content of natural peanut butter and reduced-fat peanut butter is the same: 190 calories in 2 tablespoons. However, natural peanut butter is far healthier.

Bottom Line: Reduced-fat peanut butter contains sugars and processed oils yet provides the same number of calories as natural peanut butter, which is much healthier.

6. Low-Fat Muffins

Low-fat muffins may seem like a healthier option than other baked goods, but they're really not any better.

A small, 71-gram, low-fat blueberry muffin contains 19 grams of sugar. This is 42 percent of the calorie content (25).

However, this is a much smaller muffin than you'd find in a coffee shop or convenience store.

One group of researchers reported that the average commercial muffin is more than 300 percent larger than the U.S. Department of Agriculture standard size (26).

With the exception of bran muffins, low-fat muffins contain little fiber and often have a high glycemic index (GI). High-GI foods raise blood sugar quickly, which may increase the hunger that drives overeating and leads to weight gain (27).

Bottom Line: Low-fat muffins are high in sugar and have a high glycemic index that may lead to hunger, overeating and weight gain.

7. Low-Fat Frozen Yogurt

Low-fat or nonfat frozen yogurt is considered a healthier choice than ice cream because it's much lower in fat.

However, it contains just as much sugar as ice cream, if not more.

100 grams (3.5 oz) of nonfat frozen yogurt contains 24 grams of sugar, while that amount of ice cream contains 21 grams (28, 29).

What's more, portion sizes for frozen yogurt are typically much larger than those for ice cream.

Bottom Line: Frozen yogurt contains as much or more sugar than ice cream and it's typically consumed in larger quantities.

8. Low-Fat Cookies

Low-fat cookies aren't any healthier than other cookies. They're also not as tasty.

When the low-fat trend was at its peak in the 1990s, many low-fat cookies filled grocery store shelves.

However, researchers found that these low-fat versions were not very satisfying compared to the originals (30).

Like most low-fat foods, the sugar content of these cookies is high. A fat-free oatmeal raisin cookie has 15 grams of sugar, which is 55 percent of its total calorie content (31).

In addition, low-fat cookies are typically made with refined flour, which is unhealthy.

Bottom Line: Low-fat and fat-free cookies aren't any healthier than regular cookies. They're very high in sugar and also taste worse.

9. Low-Fat Cereal Bars

Low-fat cereal bars are marketed as a healthy on-the-go snack for busy people.

In reality, they're loaded with sugar and contain very little protein, a nutrient that promotes fullness.

In fact, research shows that consuming high-protein snacks can help prevent overeating (32).

One popular low-fat, strawberry-flavored cereal bar contains 13 grams of sugar but only 1 gram of fiber and 2 grams of protein (33).

Bottom Line: Low-fat cereal bars are high in sugar but low in fiber and protein. In addition, they contain far more sugar than fruit.

10. Low-Fat Sandwich Spreads

Low-fat spreads such as margarine aren't a smart choice.

Even though they have less fat than original spreads such as butter, they still contain highly processed vegetable oils that can be harmful to health.

What's more, some of the light spreads specifically marketed as being "heart-healthy" actually contain small amounts of trans fats, which have been linked to inflammation, heart disease and obesity (34, 35, 36).

It's actually much healthier to use modest amounts of butter or healthy mayo rather than processed low-fat spreads.

Bottom Line: Low-fat margarine and spreads are highly processed. They are made with unhealthy vegetable oils and often contain trans fats.

Take Home Message

Low-fat foods may seem healthy, but they're often loaded with sugar and other unhealthy ingredients. These can lead to excessive hunger, weight gain and disease.

For optimal health, it's best to consume unprocessed, whole foods. This includes foods that arenaturally low in fat, as well as foods that naturally contain healthy fats.

This article was reposted from our media associate Authority Nutrition.

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