17/08/2025
Tulsi can reduce cortisol by 36%; here’s how it works and the right way
Basil, or as called in Ayurveda, the elixir of life. This potent ingredient has long been associated with supporting the body against a variety of ailments, especially those linked to stress and imbalance. Scientifically known as Ocimum tenuiflorum, it has recently been studied for its impressive ability to lower cortisol levels in the body, which is often known as the “stress hormone”.The claim that ancient wisdom has long supported is now backed by new scientific evidence. Holy basil can significantly reduce cortisol levels by up to 36% in the body. Read on to know more
What is cortisol and why does it matter?
Cortisol is body’s natural response to stress. If one is wondering how stress affects our body, then cortisol here, is the answer. While it plays an important role in managing short -term challenges but elevated cortisol levels are linked to several deadly conditions such as anxiety, fatigue, weakened immunity and poor sleep. It is imperative to find natural ways to lower cortisol for the overall maintenance of our bodies.
This study was published in the National Library of Medicine, under the name “A randomized, double-blind, placebo-controlled trial investigating the effects of an Ocimum tenuiflorum (Holy Basil) extract (HolixerTM) on stress, mood, and sleep in adults experiencing stress”.
The study was conducted as a randomised, placebo-controlled trial, which is the standard of gold in clinical research. It tested the effects of Holy Basil extract on 100 adults between the ages of 18-65 years. Participants received either a placebo or a dose of 125 mg of Holy Basil extract twice daily for eight weeks. The research used hair and saliva tests to measure cortisol levels, blood pressure, and sleep quality. It aimed to determine how the herb affected the body's reaction to stress. Neither the participants nor the researchers knew who was receiving the actual supplement, ensuring unbiased results
After 8 weeks of rigorous trial, the group that was taking the extract showed a remarkable 36% decrease in hair cortisol levels. That indicated a major reduction in long-term stress levels. The researchers also tested the salivary cortisol, which was also lower, meaning that the participants' bodies handled stress more calmly. Blood pressure readings after the stress were lower as well. The cherry on top was the improved sleep. The participants reported better sleep quality on Athens insomnia scale and the data from sleep trackers also confirmed the same.
What this study means for the consumers of basil
In this era, where most people are overworked, it is necessary to find alternative stress busters. Stress affects everyone today and it takes a toll on physical and mental health as well. Cut to-holy basil, our rescuer. By reducing cortisol, it helps to ease anxiety, improve sleep, improve blood pressure all while ensuring overall balance.
