Caffeine

Presentation Slides

Chinese Medicine Research Hub

Systematic Review

Higher consumption of coffee and specifically decaffeinated coffee raises the risk of rheumatoid arthritis, while caffeinated coffee, tea and caffeine intake doesn't.

2022 Frontiers in Nutrition Caffeine, Coffee, Tea and Risk of Rheumatoid Arthritis: Systematic Review and Dose-Response Meta-analysis of Prospective Cohort Studies
Asoudeh F, Dashti F, Jayedi A, Hemmati A, Fadel A, Mohammadi H

Chinese Medicine Research Hub

Systematic Review

Caffeine consumption does not seem to be associated with an increased risk of endometriosis overall, higher caffeine intake may be linked to an elevated risk, and more research is required to understand this potential dose-dependent relationship and account for unidentified biases.

2021 Nutrients The Relation between Caffeine Consumption and Endometriosis: An Updated Systematic Review and Meta-Analysis
Kechagias KS, Katsikas Triantafyllidis K, Kyriakidou M, Giannos P, Kalliala I, Veroniki AA, Paraskevaidi M, Kyrgiou M

Chinese Medicine Research Hub

Review Article

Coffee consumption may contribute to the prevention of several inflammatory diseases and types of cancer, with reduced mortality risk deemed safe up to 400mg of caffeine per day.

2021 Critical Reviews in Food Science and Nutrition Coffee consumption, health benefits and side effects: a narrative review and update for dietitians and nutritionists
Barrea L, Pugliese G, Frias-Toral E, El Ghoch M, Castellucci B, Chapela SP, Carignano MA, Laudisio D, Savastano S, Colao A, Muscogiuri G

Chinese Medicine Research Hub

Review Article

Regular coffee consumption, due to its bioactive compounds, may have protective effects against chronic disorders and certain neurodegenerative conditions.

2020 International Journal of Molecular Sciences Neuroprotective Effects of Coffee Bioactive Compounds: A Review
Socała K, Szopa A, Serefko A, Poleszak E, Wlaź P

Chinese Medicine Research Hub

Experimental Study

Pu-erh tea's ability to lower blood pressure is primarily due to theabrownins and caffeine, which cause vasodilation irrespective of the endothelium.

2019 Frontiers in Pharmacology Pu-Erh Tea Relaxes the Thoracic Aorta of Rats by Reducing Intracellular Calcium
Luo Dan, Chen Xuejiao, Zhu Xu, Liu Shuang, Li Jie, Xu Jianping, Zhao Jinhua, Ji Xu

Chinese Medicine Research Hub

Network Pharmacology

Raw pu-erh tea extract has superior antioxidant capacity due to higher polyphenol content, but ripe pu-erh offers a cheaper, yet effective alternative for antioxidant or antimicrobial properties.

2019 Molecules Ripe and Raw Pu-Erh Tea: LC-MS Profiling, Antioxidant Capacity and Enzyme Inhibition Activities of Aqueous and Hydro-Alcoholic Extracts
Roda G, Marinello C, Grassi A, et al.

Chinese Medicine Research Hub

Experimental Study

Coffee consumption, particularly caffeinated coffee, predominantly exhibits anti-inflammatory effects, contrasting with caffeine's complex impact on inflammation.

2017 Critical Reviews in Food Science and Nutrition Consumption of coffee or caffeine and serum concentration of inflammatory markers: A systematic review
Paiva CLRS, Beserra BTS, Reis CEG, Dorea JG, Da Costa THM, Amato AA

Chinese Medicine Research Hub

Systematic Review

Long-term consumption of tea catechins could be beneficial against high-fat diet-induced obesity and type II diabetes and could reduce the risk of coronary disease.

2010 Chinese Medicine Beneficial effects of green tea: A literature review
Chacko, S.M., Thambi, P.T., Kuttan, R. et al.

Executive Summary

Write an executive summary in the form of a blog article on the topic of "Research into Chinese medicine treatment for Caffeine" summarising the research below and using language that can be easily understood by patients and avoiding medical jargon using a professional and caring tone of voice.

Write an executive summary in the form of a blog article on the topic of "Researched Chinese medicine treatments for Caffeine" summarising the research below in an objective and easy to understand way, and using language that can be easily understood by patients. Group the article into Chinese medicine treatments first, followed by nutrition and other treatments. Avoid using medical jargon and use a professional and caring tone of voice.

Write me a concise but easy to understand executive summary on the topic of "Chinese medicine treatments for Caffeine" based on the following research that I will give you. Your summary should be 2 paragraphs long in Australian English spelling and include references to the studies.

A Systematic Review published in 2022 in the journal Frontiers in Nutrition found that Higher consumption of coffee and specifically decaffeinated coffee raises the risk of rheumatoid arthritis, while caffeinated coffee, tea and caffeine intake doesn't. In the methodology, a dose-response meta-analysis of prospective cohort studies was carried out to evaluate the association between dietary caffeine, and different types of coffee and tea consumption with rheumatoid arthritis (RA). Relevant research papers were identified through a database search in PubMed/Medline, Scopus and EMBASE until July 2021. The studies considered different types of coffee, caffeinated or decaffeinated, tea or caffeine exposure with RA as the main or one of the outcomes. Out of 742 publications, five studies were selected for inclusion in the meta-analysis. Pooled relative risks were calculated through a fixed-effects model. Both linear and non-linear dose-response analyses were conducted to inspect dose-response relations. The analysis of results revealed a significant association between the consumption of coffee, especially decaffeinated coffee and increased risk of RA, when comparing between extreme categories of consumption. For each additional cup of coffee consumed daily, there was a notable increase in the risk of RA. However, this study found no significant link between the intake of caffeinated coffee, tea or caffeine intake and the risk of RA.

A Systematic Review published in 2021 in the journal Nutrients found that Caffeine consumption does not seem to be associated with an increased risk of endometriosis overall, higher caffeine intake may be linked to an elevated risk, and more research is required to understand this potential dose-dependent relationship and account for unidentified biases. This systematic review and meta-analysis investigated the relationship between caffeine consumption and endometriosis risk. Analyzing ten studies, including five cohort and five case-control studies, the research found no significant overall association between caffeine intake and endometriosis risk compared to women with low or no caffeine consumption. However, when stratified by caffeine intake levels, high caffeine consumption was linked to an increased risk of endometriosis, while moderate intake showed no significant association. The study concludes that while caffeine consumption as a whole does not seem to be associated with heightened endometriosis risk, a dose-dependent link may exist, warranting further research to understand this potential relationship and account for any unidentified biases.

A Review Article published in 2021 in the journal Critical Reviews in Food Science and Nutrition found that Coffee consumption may contribute to the prevention of several inflammatory diseases and types of cancer, with reduced mortality risk deemed safe up to 400mg of caffeine per day. The methodology used in this scholarly review was based on an extensive literature review using the PubMed/Medline database. As the primary research tool, this database facilitated the authors' collation and analysis of relevant studies concerning the impact of coffee consumption on health outcomes. The focus was to determine both the positive and negative aspects of coffee consumption, with an additional aim of providing dosage recommendations. The data collated from these studies was then summarised and analysed through a narrative approach, making the findings more digestible and interpretable. The findings suggested that coffee consumption may play a significant role in preventing inflammatory and oxidative stress-related diseases such as obesity, metabolic syndrome and type 2 diabetes. In addition, findings indicated that coffee consumption also seemed to have an association with a lower incidence of several types of cancer and a reduction in the risk of all-cause mortality. However, notable is the need for a time gap between coffee consumption and the intake of some drugs to avoid potential interactions. It was also concluded that the consumption of up to 400mg/day of caffeine was generally found to be safe for the average person.

A Review Article published in 2020 in the journal International Journal of Molecular Sciences found that Regular coffee consumption, due to its bioactive compounds, may have protective effects against chronic disorders and certain neurodegenerative conditions. The paper evaluates the neuroprotective potential of the main bioactive elements in coffee: caffeine, chlorogenic acid, caffeic acid, trigonelline, kahweol, and cafestol. The analysis is focused on the coffee beverage as a complex mixture of these bioactive compounds. The comprehensive study includes in vitro and in vivo preclinical tests to determine the specific health benefits each of these compounds can offer. The results indicate that regular coffee intake may have defensive effects against a variety of enduring disorders; including cardiovascular disease, type 2 diabetes, obesity, and some forms of cancer. Additionally, an interesting correlation is found between coffee consumption and a lower risk of developing certain neurodegenerative conditions such as Alzheimer's disease, Parkinson's disease, and dementia. The study also highlights that regular coffee intake could possibly lower the risk of stroke. However, the study mentions that the mechanisms enabling these effects are yet to be fully understood.

A Experimental Study published in 2019 in the journal Frontiers in Pharmacology found that Pu-erh tea's ability to lower blood pressure is primarily due to theabrownins and caffeine, which cause vasodilation irrespective of the endothelium. For the research methodology, researchers used pu-erh tea aqueous extract to analyze its effects on rat thoracic aortas previously tightened by Phenylephrine or KCl. They observed the isometric tension and intracellular calcium to gauge the direct effects of the tea. The aqueous tea extract was separated into different fractions using organic solvents to identify the specific active components. They assessed the impact these had on the arteries. The results demonstrated that the vessels relaxed in response to the pu-erh tea extract, irrespective of whether the endothelium was removed or preincubated with potassium channel blockers. Furthermore, the contractibility of the vessels induced by Phenylephrine or CaCl under different conditions was reduced. There was also a decrease in the KCl-induced increase of intracellular calcium in rat aortic smooth muscle cells. Among the different components, researchers found that the chloroform precipitate of the pu-erh tea extract resulted in the strongest vasodilation. Theabrownins, a major part of this precipitate, and caffeine were identified as the active components causing vasodilation in an endothelium-independent manner.

A Network Pharmacology published in 2019 in the journal Molecules found that Raw pu-erh tea extract has superior antioxidant capacity due to higher polyphenol content, but ripe pu-erh offers a cheaper, yet effective alternative for antioxidant or antimicrobial properties. The investigation first utilised mass spectrometry and UV spectroscopy to profile and quantify the primary components of two types of fermented Chinese green tea - raw and ripe pu-erh. This took place after a procedure known as chromatographic separation, used to separate the components of the extract. Beyond this, the activities of the extracts, relating to antioxidant potential, antimicrobial capability and enzyme inhibition, were established and linked to their main components. In discussing the results, though having similar caffeine content and equivalent enzyme inhibition and antimicrobial activities, raw pu-erh extract demonstrated a stronger antioxidant ability owing to it containing a higher concentration of polyphenols. However, the benefits of raw pu-erh tea do not provide enough justification for its higher production costs in comparison to the ripe variety. The ripe variety of pu-erh tea was shown to be a cost-effective alternative for creating products with antioxidant or antimicrobial characteristics.

A Experimental Study published in 2017 in the journal Critical Reviews in Food Science and Nutrition found that Coffee consumption, particularly caffeinated coffee, predominantly exhibits anti-inflammatory effects, contrasting with caffeine's complex impact on inflammation. The study analysed 15 clinical trials concerning the impact of coffee, caffeine, or coffee components on inflammatory markers. Of these, eight focused on coffee and seven on caffeine with no regard for publication date. These trials tested, under varying conditions, the effect of coffee or caffeine consumption against placebos, or compared inflammatory marker levels before and after consumption. There was no discrimination of the used coffee's processing method, whether filtered or medium/dark roasted. The study discovered that, out of the seven trials comparing filtered coffee/caffeinated coffee with a placebo, or comparing baseline levels versus post-consumption, adiponectin levels increased in four. On the other hand, caffeine trials showed no change. C-reactive protein (CRP) levels remained unchanged in all five studies that considered the effects of coffee. Interestingly, only one out of three trials showed decreased CPR levels in reaction to caffeine. Additionally, Interleukin (IL)-6 level increased when caffeinated coffee was compared with placebo in one out of four coffee trials and with caffeine in three out of five studies. Finally, caffeine consumption resulted in increased IL-10 levels in two out of three trials.

A Systematic Review published in 2010 in the journal Chinese Medicine found that Long-term consumption of tea catechins could be beneficial against high-fat diet-induced obesity and type II diabetes and could reduce the risk of coronary disease. Laboratory studies showed the health effects of green tea. As the human clinical evidence is still limited, future research needs to define the actual magnitude of health benefits, establishes the safe range of tea consumption associated with these benefits, and elucidates the mechanisms of action. Development of more specific and sensitive methods with more representative models along with the development of good predictive biomarkers will give a better understanding of how green tea interacts with endogenous systems and other exogenous factors. Definitive conclusions concerning the protective effect of green tea have to come from well-designed observational epidemiological studies and intervention trials. The development of biomarkers for green tea consumption, as well as molecular markers for its biological effects, will facilitate future research in this area.

Moderation Tools

Topic