- Lane JD, Pieper CF, Phillips-bute BG, Bryant JE, Kuhn CM. Caffeine affects cardiovascular and neuroendocrine activation at work and home. Psychosom Med. 2002;64(4):595-603.
- Dalal R, Grujic D. Epinephrine. [Updated 2020 Feb 10]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2020 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK482160/
- Ribeiro JA, Sebastião AM. Caffeine and adenosine. J Alzheimers Dis. 2010;20 Suppl 1:S3-15.
- Volkow ND, Wang GJ, Logan J, et al. Caffeine increases striatal dopamine D2/D3 receptor availability in the human brain. Transl Psychiatry. 2015;5:e549.
- Chou DT, Khan S, Forde J, Hirsh KR. Caffeine tolerance: behavioral, electrophysiological and neurochemical evidence. Life Sci. 1985;36(24):2347-58.
- Shmerling, R., 2017. The Latest Scoop On The Health Benefits Of Coffee – Harvard Health Blog. [online] Harvard Health Blog. Available at: <https://www.health.harvard.edu/blog/the-latest-scoop-on-the-health-benefits-of-coffee-2017092512429> [Accessed 4 August 2020].
- Farag NH, Whitsett TL, Mckey BS, et al. Caffeine and blood pressure response: sex, age, and hormonal status. J Womens Health (Larchmt). 2010;19(6):1171-6.
- High Blood Pressure Symptoms, Causes, and Problems | cdc.gov. Centers for Disease Control and Prevention. https://www.cdc.gov/bloodpressure/about.htm. Published 2020. Accessed August 4, 2020.
- Investment and Retirement Calculator. DaveRamsey.com. https://www.daveramsey.com/smartvestor/investment-calculator. Published 2020. Accessed August 4, 2020.
- Alsene, K., Deckert, J., Sand, P. et al.Association Between A2a Receptor Gene Polymorphisms and Caffeine-Induced Anxiety. Neuropsychopharmacol 28, 1694–1702 (2003). https://doi.org/10.1038/sj.npp.1300232
- Shapiro, R.E. Caffeine and headaches. Current Science Inc12, 311 (2008). https://doi.org/10.1007/s11916-008-0052-z
- Lu S. Too much coffee?. https://www.apa.org. https://www.apa.org/gradpsych/2015/11/coffee#:~:text=Caffeine%20does%20have%20its%20cognitive,jitters%2C%20irritability%20and%20gastric%20distress. Published 2020. Accessed August 4, 2020.
- Nordbo H. Discoloration of dental pellicle by tannic acid. Acta Odontol Scand. 1977;35(6):305-10.
- Boulenger JP, Marangos PJ. Caffeine withdrawal affects central adenosine receptors but not benzodiazepine receptors. J Neural Transm Gen Sect. 1989;78(1):9-15.
- Malik VS, Popkin BM, Bray GA, Després JP, Willett WC, Hu FB. Sugar-sweetened beverages and risk of metabolic syndrome and type 2 diabetes: a meta-analysis. Diabetes Care. 2010;33(11):2477-83.