Research Shows Eating Oats Can Lower Cholesterol in Just 2 Days

Consuming oats exclusively for two consecutive days may significantly impact your metabolic health, based on new research.

A study involving 17 participants had them eat 300 g (10.5 oz) of oatmeal daily, prepared with water and optionally topped with fruits and vegetables, for two days without any other food.

Participants lost approximately 2 kg (4.4 lb) and experienced a 10% reduction in their LDL (bad) cholesterol levels. Improvements in gut health and blood pressure were noted, with lasting effects even six weeks after the diet.

Researchers from the University of Bonn in Germany compared this short-term intervention to a six-week long-term diet, where another group of 17 participants added 80 g (2.8 oz) of oats to their regular meals.

The short-term oat-only approach proved more effective, highlighting that the metabolic benefits observed stem from an intensive, short-term diet rather than gradual inclusion into everyday eating habits.

All participants were diagnosed with metabolic syndrome, which affects nearly one-third of adults and is often accompanied by weight gain, elevated blood pressure, increased blood sugar, and high cholesterol levels.

Metabolic syndrome heightens the risk of obesity-related diseases such as type 2 diabetes and heart conditions, and is linked to poor gut health.

Research indicates that oats may provide essential fiber, vitamins, minerals, and anti-inflammatory compounds known as polyphenols, making them beneficial for this demographic.

During the digestive process, some foods are metabolized by gut microorganisms, which release chemicals that can have various effects on your health depending on the food and the type of bacteria involved.

The two-day porridge diet led to an increase in beneficial compounds, particularly ferulic acid, known to lower cholesterol levels in past studies.

Participants who exhibited the highest increases in ferulic acid also experienced notable reductions in total and LDL cholesterol.

Scientists concluded that the gut interaction between bacteria and oats indicates that a brief oat-centric diet could serve as an affordable, sustainable, and effective strategy for addressing metabolic syndrome.

This research was published in Nature Communications.

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