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How Holy Basil Extract (Tulsi) Helps you Cope with Stress

Holy Basil Extract

Darrell Miller

11/28/08

Date: November 28, 2008 10:04 AM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Holy Basil Extract

It has been proposed that holy basil extract can help you cope with stress, and an investigation into the active components of the plant does indicate that there could be a scientific basis behind this use of it. This is in line with most traditional Ayurvedic medicines, whose benefits have been supported by modern scientific evidence.

Holy basil, otherwise known as Tulsi or Tulasi in Sanskrit and Hindi, is correctly Ocimum tenuiflorum, an aromatic member of the Lamiaceae family just as the more common form of basil is (Ocimum basilicum). Holy basil is cultivated for several reasons, the major ones being for its essential oils, for culinary use, religious use and for its medicinal properties. It is grown right across South Asia. Thai holy basil is used in Thai cookery while other forms play an important role within some of the traditions of Hinduism and is found profusively around Hindu temples.

Holy basil extract has been used for thousands of years for its healing and medicinal properties, and is mentioned in the ancient Ayurvedic text, the Charaka Samhita. It is written that it is used to balance a number of bodily processes and believed to be involved in promoting longevity. It is considered to be able to allow the body to adapt to stress and is also used to treat a large number of different medical conditions, from headaches to malaria and heart disease.

Most modern medical studies, however, have been carried out on animals rather than human subjects, so definitive evidence is lacking, and while there is evidence that tulsi extract might be an effective antioxidant and help in the control of blood sugar, there is also compelling evidence that it might be able to counteract the effects of stress. First, let's have a look at the active ingredients of holy basil extract, and how they fit in with the beneficial medical properties claimed.

One of the more important components of tulsi is eugenol, or 1-hydroxy-2-methoxy-4-allylbenzene. Eugenol is a phenylpropanoid, also found in clove oil, and is a COX-2 inhibitor that is used in medicine as a local anesthetic. Two others are the triterpenes oleanolic and ursolic acids, which possess anti-viral and anti-inflammatory properties. The pentacyclic ursolic acid can inhibit the development of various forms of cancers through the inhibition of the STAT3 pathway that is responsible for several types of human cancer that have poor prognosis.

Also present in holy basil extract is the polyphenol Rosmarinic acid which is a powerful antioxidant that is also present in herbs such as rosemary, oregano and thyme. Rosmarinic acid will also contribute to the anti-inflammatory properties of holy basil, and many of the antibacterial properties it is said to possess could be due to carvacrol, a terpene that damages bacterial cell membranes and inhibits the growth of a number of bacterial strains.

Another component of Tulsi is the sesquiterpene B-caryophyllene, also contained in clove oil, and also possessing anti-inflammatory properties in mice. It is unknown whether or not these properties are transferred to humans, but the evidence of the use of the plant is that they are. Beta-caryophyllene is an FDA approved food additive, and as such, a dietary cannabinoid. Apegenin, also present in tulsi, is a flavanoid and another strong antioxidant and anti-inflammatory.

With all of these ingredients that have proven health benefits, it is little wonder that holy basil is claimed to have the health benefits that it has. But what about its effects on blood sugar that it is said to control? It's probably not a coincidence that many other herbs that contain eugenol, such as cloves, are also claimed to have the same moderating effect on blood sugar levels. Not only that, but since diabetes is an inflammatory condition, it is not surprising that holy basil extract, that is rich in ant-inflammatories, should possess this property.

The main theory is that many of the components of holy basil can help support the beta cell function of the pancreas, and so enhance the secretion of insulin. In one of the few controlled human tests, a group of 40 people with Type 2 diabetes stopped taking their normal medication seven days before the test. They were then given holy basil leaves for an initial period of 5 days. Half were then given 2.5g powder holy basil leaf and the other half a placebo for 4 weeks. The two groups then switched over for 4 weeks - the first being on the placebo, and the second taking the holy basil.

With the first group, the average fasting glucose level dropped by 25.9%, from 234.5 mg/dl to 99.7. After switching to the placebo for 4 weeks it increased to 115.6 mg/dl (15.9% increase). The fasting blood glucose of the second group dropped from an average of 132.4 to 123.2 (6.9%), and then when on the holy basil leaf, dropped further to 97.2 mg/dl (21.1%).

This demonstrates clearly that holy basil leaf reduces blood sugar significantly faster than fasting, and so is beneficial to Type 2 diabetics. Perhaps more such studies should be carried out to confirm these important results, which appear to conform to the theory that the components of the plant should have this type of effect on blood sugar levels.

How about stress? Tulsi is said to particularly useful to people suffering from stress. The human stress response is an inflammatory cascade in which the immune system reacts by attempting to repair the stressed areas. If this response gets out of hand the stress can be exacerbated, and it is important that the stress response is carried put at an appropriate level.

A COX-2 modulator can prevent the inflammatory cascade by inhibiting the COX-2 enzyme that causes it. Since eugenol is a COX-2 inhibitor, it can help to keep the body healthy and prevent the stress reaction. The antioxidant and anti-inflammatory properties of many of the components of holy basil extract can help to prevent the body being stressed by antioxidants and by today's environmental pollution and it also possesses antiviral and antibacterial properties to help reduce illness.

It is also an adaptogen, which enhances your natural response to emotional stress and helps your body functional normally when stressed. Studies have indicated that holy basil extracts can reduce the levels of corticosterone, a hormone responsible for stress, and improve your mood and mental clarity. Longer term effects can include memory improvement and a reduction in the risk of age-related mental conditions.

The active factors involved in the reduction of mental stress, and an increase in mental clarity, are the essential oils that tulsi contains, and their chemical components: particularly eugenol and caryophyllene. Studies have shown these to elevate the spirit and the mood, while the terpene acids, such as ursolic acid and oleanolic acid, can help to improve your body's response to stress.

There are very few doubts of the effect of holy basil extract (or tulsi extract and leaf) in improving mood, mental clarity and reducing the effects of stress, or of its other extensive beneficial medical effects. More studies might be needed to prove them to the medical community, but even now people suffering from diabetes mellitus are benefiting from its moderating effect on blood sugar levels, and once again the application of Ayurvedic medicine is being proved as effective in the modern era as it was in the ancient world.