Researchers at Linköping University have made a groundbreaking discovery about liquorice, a popular treat around the world. Traditionally prized for its flavor and medicinal properties, licorice has now been found to increase blood pressure even in small quantities. The relationship between licorice itself and blood pressure levels was already known but this study shows that it is much closer than ever previously calculated. This revelation was detailed in a recent study published in theAmerican Journal of Clinical Nutrition. [2] The study sheds light on the potential health risks associated with licorice consumption.
I study
The researchers selected a group of 28 healthy volunteers, aged between 18 and 30, avoiding anyone with a history of significant health problems, including hypertension and chronic diseases. This diverse group was then split, subjected to a carefully designed study that saw them consume liquorice or a control product in two distinct periods.
Each participant’s daily regimen involved consuming licorice containing exactly 100 mg of glycyrrhizic acid, identified as the controversial compound in licorice, against a backdrop of rigorous daily blood pressure monitoring and hormone assessments. This approach not only highlighted the subtle but significant effects of licorice on blood pressure, but also highlighted the variability in individual responses, painting a complex picture of its health implications. [2]
The hidden impact of licorice on heart health
The study closely monitored the effects of licorice on young, healthy individuals, finding that even daily consumption of small amounts, previously considered safe, can increase blood pressure. Peder af Geijerstam, lead author of the study and a doctoral student, highlights the novelty of their findings, showing a clear increase in blood pressure due to amounts of licorice that many deem harmless. The study also identified individuals who were most sensitive to licorice, who had not only increased blood pressure but also signs of increased cardiac workload. [1]
I urge caution and better labelling
The findings call for a reconsideration of the guidelines and labeling of foods containing licorice. According to Fredrik Nyström, professor involved in the study, it is increasingly necessary to be more cautious with dietary recommendations regarding licorice. Researchers advocate for stricter labeling to help consumers better understand potential health implications. [1]
A step forward in nutritional awareness
This study, supported by various research networks and foundations, marks a significant step in understanding how even seemingly harmless food choices can impact our health. By revealing the hidden risks of licorice consumption, researchers at Linköping University seek to promote greater awareness and encourage more informed choices among consumers.
Insights
Small amounts of liquorice raise blood pressure – Linköping UniversityA low dose of daily licorice intake affects renin, aldosterone, and home blood pressure in a randomized crossover trial – ScienceDirect (DOI: 10.1016/j.ajcnut.2024.01.011)
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