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  • Low-carb vegan diet...

Low-carb vegan diet provides similar health benefits as vegetarian diet, albeit lower cost to the environment

Dr. Kamal Kant KohliWritten by Dr. Kamal Kant Kohli Published On 2022-12-14T20:00:32+05:30  |  Updated On 2022-12-14T20:00:58+05:30
Low-carb vegan diet provides similar health benefits as vegetarian diet, albeit lower cost to the environment

Canada: Low-carbohydrate vegetarian and vegan diet improves blood sugar control, and blood pressure and reduces body weight, however, the more plant-based diet has a higher potential to reduce greenhouse gas emissions, researchers state in a new study. In simpler words, a low-carb vegan diet imparts the same health benefits as a vegetarian diet but at a much lower cost to...

Canada: Low-carbohydrate vegetarian and vegan diet improves blood sugar control, and blood pressure and reduces body weight, however, the more plant-based diet has a higher potential to reduce greenhouse gas emissions, researchers state in a new study. 

In simpler words, a low-carb vegan diet imparts the same health benefits as a vegetarian diet but at a much lower cost to the environment. 

The study, published in The American Journal of Clinical Nutrition, found that a low-carbohydrate vegan diet had a significantly lower potential carbon emission value than its high-carbohydrate vegetarian counterpart. Furthermore, the researchers found that the lower the potential carbon emission value of the diet, the larger the reduction in blood cholesterol.

At a time when people across the world are feeling the varying effects of climate change, the study shows the role of diet in both lowering carbon emissions and improving health outcomes.

"We showed that you actually reduce greenhouse gas emissions, with a diet, that is effective, and that the reduction in greenhouse gas emissions is related to the fall in LDL cholesterol – often called the 'bad' cholesterol," says principal author Dr. David Jenkins, director of the Clinical Nutrition and Risk Factor Modification Centre, and a scientist in the Li Ka Shing Knowledge Institute of St. Michael's Hospital and a professor of Nutritional Sciences at the University of Toronto. "So as you reduce the impact of your diet on the environment, you also benefit by lowering your cholesterol."

The researchers put people on two different types of plant-based diets: one was a low-carbohydrate vegan diet with no meat, dairy or eggs, supplemented with canola-oil enriched bread and high-protein vegan meat alternatives. This diet tried to reproduce the popular low-carb diets that are traditionally high in meat and animal fats - but using plant ingredients.

The second diet was a vegetarian version of the clinical standard diet for lowering blood pressure, known as the Dietary Approaches to Stopping Hypertension diet or "DASH" diet, which included egg whites and low-fat dairy, but no meat. The diet is prescribed for the treatment of high blood pressure, diabetes, and other cardiovascular diseases. The diet participants of this study followed differed from the one that is normally prescribed as it cut out cholesterol sources.

The researchers then compared the effects of the diets on their subjects' health as well as the carbon emission potential of each diet. They did so by using multiple different greenhouse gas emission databases, obtaining mean values for each food.

At the end of the three-month study period, they found that the two diets were similar in their effects on weight loss, reducing blood pressure, and blood cholesterol. Study participants on the vegan diet lost 5.9 kilos and those on the vegetarian diet lost 5.2 kilos.

Both groups also saw a reduction in hemoglobin A1c, a marker of glycemic control.

Jenkins says the study participants reduced their hemoglobin A1c by about one per cent, which is the type of reduction most drugs will produce. This means that the diets had a drug-like effect.

While the study was only over a three-month period, previous studies featuring participants with high cholesterol have shown that the participants have been able to maintain their weight loss after three months. This means that three months is a sufficient amount of time for metabolism to adapt to what the body is consuming.

Study participants were already healthy when the study began, which would have meant that further reductions in risk factors like blood cholesterol and blood pressure would be difficult. However, the study's participants did see reductions in the risk factors on both the vegan and vegetarian diets.

"We have got to start changing the way we're doing things in life," says Dr. Jenkins. "This is just a small example that you can do it, it can be healthy. It is palatable. And you can reduce at least one risk factor, too." 

References:

David J A Jenkins, Peter J H Jones, Mohammad M H Abdullah, Benoit Lamarche, Dorothea Faulkner, Darshna Patel, Sandhya Sahye-Pudaruth, Melanie Paquette, Balachandran Bashyam, Sathish C Pichika, Meaghan E Kavanagh, Pooja Patel, Fred Liang, Ramon Brown, Tiffany Zhao, Mila Phan, Gajuna Mathiyalagan, Shilpa Tandon, Vladmir Vuksan, Elena Jovanovski, John L Sievenpiper, Cyril W C Kendall, Lawrence A Leiter, Robert G Josse

The American Journal of Clinical Nutrition, nqac203, https://doi.org/10.1093/ajcn/nqac203

diet vegan diet vegetarian diet high-fat diet American Journal of Clinical Nutrition 
Source : American Journal of Clinical Nutrition
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Before Joining Medical Dialogues, he has served at important positions in the medical industry in India including as the Hony. Secretary of the Delhi Medical Association as well as the chairman of Anti-Quackery Committee in Delhi and worked with other Medical Councils in India. Email: editorial@medicaldialogues.in. Contact no. 011-43720751

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