Tea drinking is
beneficial for health in addition to preventing, and in some cases, improving
certain health ailments, including inflammatory response, obesity, cardiovascular diseases, autoimmune diseases,
neurodegenerative diseases and tumors 1 People who
drink green tea are less susceptible to tuberculosis, caused by Mycobacterium
tuberculosis.2 Tea is a
frequently consumed beverage globally. Both black tea and green tea exhibit
antioxidant properties and many experimental studies have shown tea polyphenols
to be beneficial against many diseases by reducing the levels of oxidative
Green teas are
produced from anhydrous leaves of Camellia sinensis devoid of prior
fermentation, and this preserves the naturally occurring polyphenols, just as
tea catechins. Its essence shows reduce oxidative stress level within diseased
mice in a study trial and also in diseased patients in an experimental study 1.
It also protects the immune system against oxidant compounds and free radicals
through regulating oxidative stress and boost its function as well3
the current study published in 2017 states the inverse relation between tea
drinking with a risk of developing active tuberculosis in a dose-dependent
manner. In this study, 63,257 Chinese adults (27,959 men and 35,298 women) were
registered, 41.3% of the candidate were non-drinkers of tea (defined as
drinking less than 1 cup per month), and 22.3% were regular tea drinkers.
Coffee or caffeine intake has no relation with TB decreasing rate. 1
Dow University of Health & Science1
Kiran Shafiq Khan
Additionally, the study published in 2015 consist of 574 TB patients
and 582 healthy ones. Results indicate that green tea has protective action
against TB, compared to other teas 2
Epigallocatechin gallate (EGCG), the major component of green tea
catechins, has been shown experimentally to inhibit mycobacterial survival 1.
It ceases the action of InhA, the enoyl-acyl carrier protein reductase in
tubercle bacillus.EGCG in tea leaves impairs
SP1 transcription factors in TACO gene promoters, thus inhibiting the TACO
genes, which successively arrest the existence of tubercle bacillus in
macrophages2.Pulmonary tuberculosis is aetiologically related to exposure to tea
dust4. Therefore, it
is necessary that healthcare providers should be aware of this enlightened
effect to subsequently manage such patients efficiently.
Disclaimer: None to be
Conflict of Interest: None to be
Funding Disclosure: None to be
1. Chen, M., et al., Impact of tea drinking upon tuberculosis: a
neglected issue. BMC Public Health, 2015. 15: p. 515.
2. Soh, A.Z., et al., Tea Drinking and Its Association with Active
Tuberculosis Incidence among Middle-Aged and Elderly Adults: The Singapore
Chinese Health Study. Nutrients, 2017. 9(6).
3. Honarvar, M.R., et al., The effect of green tea extract
supplementation on sputum smear conversion and weight changes in pulmonary TB
patients: A randomized controlled trial. Med J Islam Repub Iran, 2016. 30: p. 381.
C.G., Respiratory disease in tea workers
in Sri Lanka. Thorax, 1980. 35(2):