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The purpose of this paper is to explore the sources of caffeine and its utilization in different food products, along with its impact on human health in terms of benefits and adverse effect.

The papers reviewed were selected based on the following key descriptors such as caffeine, sources, trends of consumption, utilization, benefits and adverse effects, regulation and labelling.

There are many physiological effects of caffeine on respiratory, cardiovascular, gastrointestinal, reproductive and central nervous system. It has a positive effect in reducing the risk of diabetes, Alzheimer’s disease, Parkinson’s disease and liver injury and, at the same time, in improving mood, psychomotor performance and immune response. On the other hand, the negative effects of caffeine include addiction, cancer, heart diseases, insomnia, gastrointestinal disturbances and intoxication. As caffeine, when taken in large amount, is harmful, therefore as per the regulatory bodies, its concentration should not exceed the set limit, and its presence needs to be listed on the label of that particular food product. In a nutshell, it can be said that caffeine acts as a boon as well as bane because it possesses both beneficial and adverse effects.

This is a unique and comprehensive review that will provide a brief overview of sources, utilization, healthful as well as harmful effect of caffeine to the readers.

Food companies and consumers are increasingly interested in healthy food and beverages. Coffee is one of the most commonly consumed beverages worldwide. There is increasing consensus that coffee consumption can have beneficial effects on human body. This paper aims at exploring Twitter messages' content and sentiment towards health attributes of coffee.

The research adopted a utilitarian and hedonic consumer behaviour perspective to analyse online community messages. A sample of 13,000 tweets, from around 4,800 users, that mentions keywords coffee and health was collected on a daily basis for a month in mid-2017. The tweets were categorized with a term frequency analysis, keyword-in-context analysis and sentiment analysis.

Results showed that the majority of tweets are neutral or slightly positive towards coffee’s effects on health. Media and consumers are dynamic Twitter users. Findings support that coffee consumption brings favourable emotions, wellness, energy, positive state of mind and an enjoyable and trendy lifestyle. Many tweets have a positive perception of coffee health benefits, especially relating to mental and physical well-being.

The high number of users and tweets analysed compensates the limited amount of time of data collection, Twitter messages' restricted number of characters and quantitative software analysis limitations.

The research provides valuable suggestions for food and beverage industry managers.

This work adds value to the literature by expanding scholars' research on food product attributes perception analysis by using social media as a source of information. Moreover, it provides valuable information on marketable coffee attributes.

Misconceptions about the health effects of coffee and caffeine are common, and, as only a tiny amount of published research ever reaches the public eye, this is perhaps not surprising. The inconsistent and often contradictory results within any subject in coffee/caffeine and health research leads to further confusion, while the stimulatory effects of caffeine are subject to considerable inter‐individual variation, affecting personal attitudes (whether positive or negative) towards caffeinated beverages. Assessing individual research studies on their own merit, and putting into perspective the overall data on a number of health topics, from cardiovascular disease to cancer, does suggest that the health risks of moderate coffee or caffeine consumption are not as great as may have been assumed. Individuals should perhaps not be concerned about the effects of drinking coffee on their physical wellbeing.

Through the ages man has searched diligently for stimulants in his environment. His search has not gone unrewarded. But the reward has had its price. Man found the coffee bean in Arabia, the tea leaf in China, the kola nut in West Africa, the cocoa bean in Mexico, the ilex plant, which provides maté in Brazil, and the cassina or Christmas berry tree in North America. They all contain caffeine, which accounts for the enthusiastic acceptance of beverages brewed from these native plant products. The popular coffee beverage spread to Ethiopia from Arabia, Turkey, then to near Eastern and North African Regions, and finally to Europe and North and South America. When newly introduced, coffee was considered an intoxicating brew, dangerous to health. Despite medical warnings and efforts to suppress it, coffee became a welcome and socially acceptable drink. The controversy over the health aspects of coffee continues. Increasingly the debate has focused on caffeine. This report deals with caffeine — its chemical identity and dietary sources, its intake by individuals in the United States and its known biological effects.

Examines the history of coffee drinking. Describes the constituents of coffee and its physiological effects on the drinker. Reviews the research done in the past on caffeine’s effects on health. Recommends a safe level of consumption at between 300‐400mg of caffeine per day which translates to four or five cups of average strength coffee.

In the recent decades, energy drinks consumption has increased dramatically. Many researches found their adverse effects on the structure and function of organs and systems, with nervous and cardiovascular systems most studied. Liver is one of the priority target organs in case of beverages consumption. The purpose of this paper is to explore the effects of energy drink consumption on morphofunctional conditions of liver.

A search in PubMed, Web of Science, Scopus and eLIBRARY.ru databases was performed using relevant keywords.

Both clinical and experimental data concerning effects of energy drink use on structure and function of liver are summarized and systematized in this review. Most of them documented hepatotoxicity after prolonged over-consumption of energy drinks. Probable mechanisms of action of their basic ingredients (sugars, caffeine, taurine, D-glucuronolactone, vitamin B3) on morphology and functioning of liver as well as combined use of energy drinks with alcohol are described.

This review paper represents evidential information about the negative impact of energy drink consumption on morphofunctional conditions of liver.

Purpose – A placebo effect is a (positive) change in health outcomes that is due to a (positive) change in beliefs about the value of a treatment. Placebo effects might be “behavioral,” in the sense that revised beliefs lead to behavioral changes or new actions that in turn yield changes in health outcomes. Placebo effects might also include a “physiological” component, which refers broadly to non-behavioral, brain-modulated mechanisms by which new beliefs cause changes in health outcomes. Nearly all formal economic models of human behavior are consistent with behavioral placebo effects, but strongly inconsistent with their physiological counterparts. The reason is that the latter effects can imply that expectations enter, rather than multiply, state-contingent preferences. It is therefore unfortunate that little evidence exists on physiological placebo effects. We report data from novel clinical experiments with caffeine that seek to provide such evidence.

Methods – Subjects visit the clinic on multiple occasions. On each visit they ingest either a placebo or caffeine pill. Subjects only know the probability with which the pill includes caffeine. We obtain physiological measurements prior to ingestion and at 30, 60, and 90min after ingestion. Importantly, we constrain subjects to remain seated and read pre-selected magazines during the interval between treatment and outcome measurement.

Findings – Our design provides particularly clean inference because it (i) eliminates the possibility of behavioral confounds; (ii) provides for measurements at the individual level; (iii) manipulates beliefs without deception; and (iv) uses salient rewards. We find evidence for the existence of physiological placebo effects mediated by expectations.

Implications – Our results are consistent with the possibility that the prefrontal cortex provides external, top-down control that modulates physiological outcomes, and make a case for the importance of research geared toward developing appropriate and tractable frameworks that accommodate non-linear relationships between expectations and preferences.

The purpose of this paper is to explore the health effects and safety aspects regarding the consumption of energy drink (ED).

A wide variety of publications was identified through electronic databases (ScienceDirect, PubMed, SciELO, Google Scholar, Link springer and ResearchGate) on the basis of different keyword such as composition, market status, consumption pattern, health effects, consequences and policies related to ED consumption.

Owing to its popularity, various brands of EDs have been introduced in the market along with a wide variety of modifications to attract the consumers of all age groups. EDs comprise majorly active ingredients such as caffeine, taurine, guarana, L-carnitine and glucoronolactone, ginseng and sweeteners. EDs are well known to have good taste, enhance energy levels, physical alertness and performance, but they also pose risk of certain health hazards, i.e. caffeine intoxication. Because of this, different policies have been formulated by various regulatory bodies of respective countries regarding the composition, labelling, distribution and sale of EDs.

This review will provide a brief overview of composition, market status, consumption pattern, health effects, consequences and policies related to ED consumption.

The purpose of this paper is to determine the level of food additives, caffeine and total sugars in locally manufactured beverages in Mauritius and ascertain their compliance with national and international norms.

In total, 48 beverages: 21 soft drinks, 14 ice teas, 5 fruit drinks, 5 nonalcoholic sparkling drinks and 3 tonic waters were analysed for the level of sweeteners (aspartame, acesulfame K and saccharin), preservatives (benzoic and sorbic acid), colours (tartrazine, sunset yellow, quinoline yellow, allura red, amaranth, ponceau 4R, carmoisine, erythrosine, brilliant blue, green S and patent blue), citric acid, caffeine and total sugars. High-performance liquid chromatography methods used to quantify the levels of total sugars, caffeine and additives were validated against parameters such as linearity, recovery, accuracy, precision and limit of quantification.

Out of 48 beverages, 13 contained at least one sweetener. The most frequently used sweeteners were acesulfame K and aspartame. Benzoic acid was present in 27 samples (42.32–168.03 mg/L). Sorbic acid was present in 14 beverages (13.01–180.38 mg/L). Citric acid (0.7–4 g/L) was present in all the 48 beverages, while caffeine was present in 20 samples in the range of 14.01–129.42 mg/L. Nine samples contained at least one artificial colour and the most frequently used colours were tartrazine, sunset yellow, brilliant blue and carmoisine. The average level of total sugars present in the beverages was 10 g/100 ml. The validation parameters obtained showed evidence for method suitability.

Beverages sold by individuals on the street, small restaurants and markets were not analysed.

This study provides an overview of the chemical composition of soft drinks and their compliance with Food Regulations. It also paves the way to investigate weaknesses, knowledge, attitudes and practices of local manufacturers, which leads to non-adherence to Regulations regarding food additives.

The purpose of this paper is to explore the history, classification, regulation, the current market and consumer trends and health effects of alcopops.

The articles reviewed were selected based on the following key descriptors such as alcopop, history, classification, types, production and consumption trend, health benefits and adverse effect.

“Alcopop” is a collective term used to refer to flavored alcoholic beverages (FAB), also known as malt alcoholic beverage; ready-to-drink beverage (RTD); pre-packaged spirit or premium packaged spirit; high-strength (HS) pre-mixed beverage; pre-mixed caffeinated alcoholic beverage or alcoholic energy drink, etc. Alcopops were introduced into the market in 1990s. Starting with the introduction of FAB in the form of wine coolers, a large number of alcoholic beverages have been introduced. FAB are sweet, containing relatively low alcohol content and especially designed for the young drinkers also called the “entry-level” drinkers. They are popular among young and underage drinkers, teenage girls particularly, and the industries use packaging materials and marketing strategies that appear to target the youth. These products are now marketed globally, and their production, classification and marketing vary by country based on national regulatory restrictions. In countries such as USA and Australia, the industry represents that the products were malt beverages for regulatory purpose which were found to be false as other products were derived from distilled spirits. The product has no health benefits so far, the government need to reform their regulations and include new definitions of alcopops with available restrictions that would be practice at both national and state levels until and unless there have been another scientifically approved method of production through which the beverage could be beneficial for human consumption.

This is a unique and comprehensive review that will provide a brief overview of alcopops, i.e., a global perspective on the new category of alcoholic beverage.