A simple dietary change – incorporating oats into your daily diet – could significantly lower cholesterol levels within days, according to Dr. Punam Krishan, a GP with the National Health Service and resident doctor on BBC’s Morning Live. Dr. Krishan highlighted recent research demonstrating the effectiveness of soluble fibre, found abundantly in oats, in reducing both cholesterol and blood pressure.
Speaking on the BBC program, Dr. Krishan explained that approximately one in two adults will develop raised cholesterol, often without experiencing any noticeable symptoms. This lack of outward signs has led to cholesterol being labelled a “silent killer,” as it can build up in arteries over time, increasing the risk of heart disease and stroke.
The research Dr. Krishan referenced, published in the journal Nature Communications by researchers at the University of Bonn, showed that individuals with metabolic syndrome experienced an average 10% drop in LDL (“poor”) cholesterol after consuming 300g of porridge prepared with water for just two days. Participants also saw a slight reduction in blood pressure and lost an average of 2kg (4.4lbs) during the same period. Notably, the positive effects on metabolic health remained apparent six weeks after the two-day diet.
The study suggests that a high-oat diet alters gut bacteria, increasing the presence of beneficial bacteria that promote improved cholesterol metabolism. Researchers found that the short, high-dose approach of two days of substantial oat consumption was more effective than gradually incorporating smaller amounts of oats into a regular diet over six weeks.
Dr. Krishan emphasized that consuming “slow fibre” foods – including oats, beans, and lentils – is “fantastic” for lowering cholesterol and should be integrated into a balanced diet over the long term. A 70g serving of dry oats delivers approximately 3g of beta-glucan, a soluble fibre known to bind to cholesterol in the digestive system, preventing its absorption and prompting the liver to remove more LDL cholesterol from the bloodstream. Regular consumption of porridge can lower LDL cholesterol by roughly 7%.
While readily available and affordable – a 1kg bag of porridge oats can be purchased for 85p at Asda, equating to approximately 8p per 100g serving – Dr. Krishan cautioned against relying on porridge alone. She stressed the importance of a holistic approach to managing cholesterol, including regular physical exercise and a diet low in saturated and processed fats.
Dr. Krishan also advised individuals over the age of 40 who have never been tested for cholesterol to schedule an appointment with their doctor, particularly those with risk factors or a family history of high cholesterol. She recommended yearly testing for high-risk individuals, potentially increasing to twice a year if on medication or if cholesterol levels remain elevated. She also acknowledged that medication, such as statins, remains a safe and effective treatment option for many, and that alternative medications are available if needed.
Dr. Krishan addressed potential stigma surrounding long-term medication, stating that any intervention reducing risk contributes to longevity and should not be viewed negatively. She also noted that high cholesterol can affect individuals of all ages and fitness levels, not just those who are older or overweight, and is influenced by a combination of genetic predisposition, family history, and lifestyle choices.
