At one time the conventional low-fat diet formed its basis on weak scientific evidence. Since that time, this early information has been completely disproved.
Over the past few decade, a number of substantial, long-term studies have shown a low-fat diet is not a healthy choice.
These studies proved it is not only ineffective, but it can be quite harmful for many people.
The following information provides 5 ways in which a low-fat diet can produce harmful effects.
Animal foods that are naturally rich in fat have a tendency to be quite nutritious and healthy.
While there is no doubt animal products from those that have been factory farmed and grain-fed are not the healthiest choice, consuming foods from animals that have been raised properly and fed a healthy diet are excellent choices.
Something to keep in mind: There is no proof to support the theory that either cholesterol or saturated fat are unhealthy.
Many populations throughout the world including the Inuit and the Masai have remained in excellent health even though they obtain nearly all their calories from animal sources.
4 Beneficial High-Fat Foods:
- Meat: Meat is an excellent source of Omega-3 fatty acids, CLA, vitamins and minerals, and essential nutrients such as Carnosine and Creatine if it is fed naturally.   
- Eggs: Contrary to some opinions, eggs are one of the healthiest foods on earth. They contain an abundance of vitamins and minerals in addition to Choline and a variety of powerful antioxidants that are beneficial for protecting the eyes.  
- High-fat dairy products: The best source of Vitamin K2 comes from grass-fed dairy products. These foods are also rich in Calcium, CLA, and an abundance of other nutrients.   
- Coconut: The fats in coconut products provide some powerful health benefits that include improvement in brain function, improved fat burning (like taking TruVision supplements), and better blood lipids.   
The Last Word: Foods that are rich in both cholesterol and saturated fat have a tendency to be extremely nutritious and quite healthy. A low-fat diet discourages consumers from eating these foods.
High Density Lipoprotein [HDL] is commonly referred to as the “good” cholesterol.
The Last Word: HDL is commonly referred to as the “good” cholesterol and is connected to a lower risk of heart disease. According to studies, a low-fat diet reduces the HDL levels.
The most common cause of death in both middle- and high-income countries is heart disease. 
When adopting to a Western Diet, they begin to suffer from diabetes, become obese, and are affected by other health conditions. 
Several long-term extensive randomized controlled trials were conducted which examined the effects low-fat diets have on heart disease risk.
- The Women’s Health Initiative: The results of a study of 48,835 women on the low-fat diet showed weight loss of only one pound during a 7-1/2 year period. The diet failed to reduce the risk of cancer or heart disease.    
- MRFIT: During this trial, a low-fat diet failed to lower the possibility of heart disease among a group of 12,866 men who were at high risk for having a heart attack in spite of the fact many of them had stopped smoking.  
- Look AHEAD: The results of a 9.6 year study of 5,145 diabetics revealed the low-fat diet failed to reduce the risk of heart disease even though the participants lost weight through forced calorie restriction.  
It’s important to keep in mind these studies are comparing the low-fat diet to the standard Western diet. This diet is pretty much the unhealthiest diet possible.
Anyone who has elevated triglycerides is at risk for heart disease. 
Since the typical low-fat diet is also high in carbs, this may cause an increase in blood triglycerides; increasing the risk of cardiovascular disease. 
A low-carb, high-fat diet is the best way to lower triglycerides. This type of diet consistently leads to lower blood triglyceride levels.
The Last Word: The typical low-fat diet is extremely high in carbohydrates. The liver turns these excess carbohydrates into fat which then raises the blood triglyceride levels and thus puts you at increased risk for cardiovascular disease.
When the guidelines for consumption of low-fat diets first came out manufacturers jumped at the chance to offer consumers what they originally believed was a healthier way to eat.
Their intention was to provide an abundance of “heart healthy” low-fat foods, such as the ones from Isagenix, to consumers in an effort to sell those foods to the health-conscious public.
Unfortunately, there is a big problem with fat-free foods: they don’t have any flavor.
To compensate for the lack of flavor, food manufacturers add sugar.
The typical low-fat diet that has been recommended by the United States Department of Agriculture also advocates consumers increase their intake of certain foods such as:
- Vegetable Oils: Consumption of vegetable oils can lower cholesterol in the short-term but in the long-term they can be harmful because of their association with inflammation and heart disease. 
- Whole Wheat: A significant number of people in the population may suffer from gluten sensitivity and experience a variety of symptoms such a fatigue, pain, stool inconsistency, and various others.  
People increase their intake of harmful foods such as sugar, vegetable oils, and wheat since the introduction of low-fat guidelines.
The Last Word: Many junk foods that contain a large amount of sugar have flooded the market since food manufacturers started using low-fat labeling. Advocates for the low-fat diet also recommend eating foods we now know are unhealthy.