Watch: Your Brain On Coffee by AsapSCIENCE

 

How does the world’s favourite drug actually work?


Further Reading–

Adenosine Effect Overview:
http://thebrain.mcgill.ca/flash/a/a_1…

Adenosine receptors:
http://onlinelibrary.wiley.com/doi/10…

General Caffeine Effects:
http://chemistry.about.com/od/molecul…

Toxicity:
http://coffeefaq.com/site/node/12

 

Coffee is a brewed beverage prepared from the roasted or baked seeds of several species of an evergreen shrub of the genusCoffea. The two most common sources of coffee beans are the highly regarded Coffea arabica, and the “robusta” form of the hardierCoffea canephora. The latter is resistant to the coffee leaf rust (Hemileia vastatrix), but has a more bitter taste. Coffee plants are cultivated in more than 70 countries, primarily in equatorial Latin America, Southeast Asia, and Africa. Once ripe, coffee “berries” are picked, processed and dried to yield the seeds inside. The seeds are then roasted to varying degrees, depending on the desired flavor, before being ground and brewed to create coffee.

Coffee is slightly acidic (pH 5.0–5.1) and can have a stimulating effect on humans because of its caffeine content. It is one of the most popular drinks in the world. It can be prepared and presented in a variety of ways. The effect of coffee on human health has been a subject of many studies; however, results have varied in terms of coffee’s relative benefit.The majority of recent research suggests that moderate coffee consumption is benign or mildly beneficial in healthy adults. However, the diterpenes in coffee may increase the risk of heart disease.

 

 

Rank Country Consumption (kg/year)
1  Finland 12.0 kg
2  Norway 9.9 kg
3  Iceland 9.0 kg
4  Denmark 8.7 kg
5  Netherlands 8.4 kg
6  Sweden 8.2 kg
7  Switzerland 7.9 kg
8  Belgium 6.8 kg
9  Canada 6.5 kg
10  Bosnia and Herzegovina 6.2 kg
11  Austria 6.1 kg
12  Italy 5.9 kg
13  Lithuania 5.8 kg
14  Brazil 5.8 kg
15  Germany 5.5 kg
16  Greece 5.5 kg
17  France 5.4 kg
18  Croatia 5.1 kg
19  Cyprus 4.9 kg
20  Lebanon 4.8 kg
21  Serbia 4.5 kg
22  Spain 4.5 kg
23  Estonia 4.5 kg
24  Portugal 4.3 kg
25  United States 4.2 kg
26  Macedonia 4.2 kg
27  Slovenia 4.1 kg
28  Slovakia 4.0 kg
29  Czech Republic 4.0 kg
30  Brunei 4.0 kg
31  Honduras 3.9 kg
32  Costa Rica 3.8 kg
33  Israel 3.8 kg
34  New Zealand 3.7 kg
35  Algeria 3.5 kg
36  Ireland 3.5 kg
37  Latvia 3.4 kg
38  Gibraltar 3.4 kg
39  Japan 3.3 kg
40  Bermuda 3.3 kg
41  Hungary 3.1 kg
42  Australia 3.0 kg
43  Bulgaria 2.9 kg
44  United Kingdom 2.8 kg
45  Poland 2.4 kg
46  Romania 2.3 kg
47  Malta 2.3 kg
48  Dominican Republic 2.3 kg
49  Qatar 2.2 kg
50  Haiti 2.1 kg
51  Nicaragua 2.0 kg
52  El Salvador 1.9 kg
53  Jordan 1.9 kg
54  South Korea 1.8 kg
55  Colombia 1.8 kg
56  Russia 1.7 kg
57  Venezuela 1.6 kg
58  Saudi Arabia 1.6 kg
59  Kuwait 1.6 kg
60  Albania 1.6 kg
61  Ukraine 1.4 kg
62  Madagascar 1.4 kg
63  Laos 1.4 kg
64  Armenia 1.4 kg
65  Guatemala 1.3 kg
66  Ethiopia 1.3 kg
67  Georgia 1.3 kg
68  Panama 1.2 kg
69  Mexico 1.2 kg
70  Cuba 1.2 kg
71  Cape Verde 1.2 kg
72  Hong Kong 1.1 kg
73  Tunisia 1.1 kg
74  Gambia 1.1 kg
75  Ivory Coast 1.0 kg
76  Argentina 1.0 kg
77  Solomon Islands 1.0 kg
78  Oman 1.0 kg
79  Kiribati 1.0 kg
80  Barbados 1.0 kg
81  Morocco 0.9 kg
82  Malaysia 0.9 kg
83  Uruguay 0.9 kg
84  Suriname 0.9 kg
85  Chile 0.8 kg
86  Puerto Rico 0.4 kg