OCT 06, 2018 4:06 PM PDT

Risks Posed by the Keto Diet

WRITTEN BY: Carmen Leitch

It seems there is no shortage of diet trends, although we’ve moved on from Atkins and South Beach and into the world of Paleo and keto or ketogenic diets. These diets have been used for medical reasons; they force our physiology to use a different metabolic pathway than the one it typically uses. But ketogenic diets also rely on fats to supply around 90 percent of the calories we need for the day instead of proteins and carbohydrates. This diet could carry serious health risks because of the metabolic changes it causes. Learn more from the video.

"The keto diet is primarily used to help reduce the frequency of epileptic seizures in children. While it also has been tried for weight loss, only short-term results have been studied, and the results have been mixed. We don't know if it works in the long term, nor whether it's safe," warned registered dietitian Kathy McManus, the director of the Department of Nutrition at Harvard-affiliated Brigham and Women's Hospital.

Our bodies normally get the energy we need by burning sugars that come from carbohydrates in foods like fruits, vegetables, grains, and legumes. In the ketogenic diet, the body is forced to rely on ketone bodies for energy, which come from fats stored in the liver. In order to do this, carbohydrate intake has to be reduced to almost nothing (less than 50 grams a day), and protein consumption can’t be too high.

Consuming that much fat isn’t easy, so those following the diet are encouraged to eat any kind of fat they can get, including lard and cocoa butter, which are both saturated fats. Although there is debate about whether or not those fats are inherently bad, it has been shown that reducing saturated fat intake is better for the heart

The keto diet carries numerous possible risks. They include nutrient deficiency. "If you're not eating a wide variety of vegetables, fruits, and grains, you may be at risk for deficiencies in micronutrients, including selenium, magnesium, phosphorus, and vitamins B and C," McManus said.

The liver works harder as it's forced to metabolize fat because of the diet, so it may cause liver problems. The kidney also helps out with fat metabolism, and the keto diet could cause an overload, said McManus.

Because the diet is so low in fiber, constipation is a risk. It may also have an impact on the brain. “The brain needs sugar from healthy carbohydrates to function. Low-carb diets may cause confusion and irritability," explained McManus.


Sources: Harvard Health Publishing, Circulation

About the Author
  • Experienced research scientist and technical expert with authorships on 28 peer-reviewed publications, traveler to over 60 countries, published photographer and internationally-exhibited painter, volunteer trained in disaster-response, CPR and DV counseling.
You May Also Like
APR 13, 2020
Neuroscience
APR 13, 2020
The Memory Cells that Help Us Interpret Different Situations
Neuroscientists from MIT have identified cell populations that encode different parts of an overall experience. Like the ...
APR 13, 2020
Cell & Molecular Biology
APR 13, 2020
Getting Closer to Making Heparin in Cells
While heparin is the most commonly prescribed drug in hospitals, we have to extract it from pig intestines, which is fra ...
APR 21, 2020
Cell & Molecular Biology
APR 21, 2020
Virtual Cell Provides a Close Look at Gene Expression During Development
Living organisms start out as one cell, and its genetic programs allow it to divide many times over, to give rise to the ...
JUN 11, 2020
Cell & Molecular Biology
JUN 11, 2020
Changes in Gut Mucus are Connected to Brain Disorders
In recent years, researchers have learned more about how important the gut is to human health. Trillions of microbes liv ...
JUN 22, 2020
Cell & Molecular Biology
JUN 22, 2020
Viruses Can Create New Genes By Stealing Bits of Human DNA
When viruses infect cells, they hijack the machinery inside and start to use it for their own purposes. This enables vir ...
JUN 29, 2020
Drug Discovery & Development
JUN 29, 2020
Staring into Deep Red Light Improves Eyesight
Researchers from UCL have found that staring into a deep red light for just three minutes per day can significantly impr ...
Loading Comments...