People who follow plant-based diet are less prone to OSA

People who follow plant-based diet are less prone to OSA

The new study is one of the first large-scale analyses to investigate the correlation between plant-based diets and OSA risk

ANIUpdated: Thursday, February 22, 2024, 04:13 PM IST
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People who consume a plant-based diet rich in vegetables, fruits, whole grains, and nuts are less likely to suffer from obstructive sleep apnea (OSA), according to a study published in ERJ Open Research.
People who consume an unhealthy plant-based diet rich in refined carbohydrates, sugary drinks, and high-sugar, high-salt foods are more likely to develop OSA.


People with OSA frequently snore loudly, their breathing begins and ends throughout the night, and they may wake up multiple times. This not only causes fatigue, but may also increase the risk of high blood pressure, stroke, heart disease, and type 2 diabetes.

Correlation between plant-based diets and OSA risk

The new study is one of the first large-scale analyses to investigate the correlation between plant-based diets and OSA risk.
Researchers said its findings suggest that eating a healthy, plant-based diet may help prevent or treat OSA.
The research was led by Dr. Yohannes Melaku from Flinders University in Adelaide, Australia.


He said, "Risk factors for obstructive sleep apnoea may stem from genetics or behaviour, including diet. Previous research has primarily focused on the impact of calorie restriction, specific dietary elements, and weight loss. There's a gap in our knowledge of how overall dietary patterns affect OSA risk. With this study, we wanted to address that gap and explore the association between different types of plant-based diets and the risk of OSA."

Key Highlights Of The Research

The research included data on 14,210 people who were taking part in the US National Health and Nutrition Examination Survey. Participants were asked to explain everything they had eaten over the last 24 hours. Researchers categorised this information according to whether people were eating a healthy plant-based diet (including whole grains, fruits, vegetables, nuts, legumes, tea, and coffee) or a diet high in animal foods (including animal fat, dairy, eggs, fish, seafood, and meat).

They also looked at whether people were eating an unhealthy, plant-based diet (including refined grains, potatoes, sugar-sweetened drinks, sweets, desserts, and salty foods). Participants also answered a questionnaire designed to gauge whether they are likely to be suffering from OSA.

People with diets highest in plant-based food were 19% less likely to be suffering from OSA, compared with those eating diets lowest in plant-based food. Those eating a largely vegetarian diet were also at a lower risk. However, people eating a diet high in unhealthy plant-based foods were at a 22 per cent higher risk, compared to those eating low amounts of these foods.

Differences In The Risks For Women And Men

The researchers also found differences in the risks for women and men, with a plant-based diet having a stronger correlation with OSA risk for men and an unhealthy plant-based diet having a bigger increase in women's risk.


Dr. Melaku said, "These results highlight the importance of the quality of our diet in managing the risk of OSA. It's important to note these sex differences because they underscore the need for personalised dietary interventions for people with OSA.


"This research doesn't tell us why diet is important, but it could be that a healthy plant-based diet reduces inflammation and obesity. These are key factors in OSA risk. Diets rich in anti-inflammatory components and antioxidants, and low in harmful dietary elements, can influence fat mass, inflammation, and even muscle tone, all of which are relevant to OSA risk."

Plan To Investigate The Links Between Eating Ultra-Processed Food And OSA Risk

The researchers now plan to investigate the links between eating ultra-processed food and OSA risk in the same group of people. They also intend to study the interaction between diet and OSA risk over the longer term.
Professor Sophia Schiza is Head of the European Respiratory Society's assembly on sleep-disordered breathing, based at the University of Crete, Greece, and was not involved in the research.


She said, "Obstructive sleep apnoea is a frequently occurring condition, and a significant number of individuals remain unaware of their own diagnosis despite the associated risks. There are treatments available for OSA, and patients can also take certain steps to improve their condition. This involves refraining from smoking, maintaining a healthy weight, and staying physically active.


"The findings of this study propose that modifying our diet might be beneficial in managing or avoiding OSA. Being aware that incorporating a wide variety of vegetables, fruits, and whole grains into our diet while minimizing the consumption of unhealthy foods and sugary drinks can greatly improve our overall health. We need to make it as easy as possible for everyone to adopt a healthy diet."

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