Wednesday, May 16, 2012

How Much Caffeine Did You Consume Today?


I am a caffeine addict, like you and the person over there with Starbucks paper cup. I know the undesirable side effects of caffeine, but abstaining from drinking coffee does not solve anything, because I will be still drinking lots of tea with even more chocolate. Right now, I am having tea and chocolate at the same time, and just found out that the nutrition facts sheet on the chocolate package does not include caffeine amount. So, I would like to share with you some facts I found by googling.

The following is a table on caffeine contents in chocolate, from https://www.amanochocolate.com/articles/caffeineinchocolate.html.

Chocolate Percentage
mg/pound
mg/3.5oz (100g)
mg/2oz (56g)
43% (Semi-Sweet)
353mg
77mg
44mg
50%
453mg
99mg
57mg
60% (Bittersweet)
544mg
119mg
68mg
70%
635mg
139mg
79mg
80%
725mg
159mg
91mg
90%
816mg
179mg
102mg
100%
907mg
198mg
113mg


What I am eating right now has 70% cacao, and I finished eating 75% of the whole, which is 35g. So, I’ve added 139mg * .35 * .75 = 35.44mg of caffeine into my system.

Also from the same webpage, the following is on caffeine amount in drinks:
Food / BeverageServing Size (oz)Caffeine (mg)mg/oz
Coffee
Coffee (Brewed)8107.513.44
Coffee (Decaf Instant)82.50.31
Coffee (Decaf Brewed)85.60.70
Coffee (Drip)814518.13
Coffee (Espresso)1.57751.33
Coffee (Instant)8577.13
Tea
Tea (Brewed)8475.88
Tea (Green)8253.13
Tea (Instant)8263.25
Tea (Lipton Brisk)1290.75
Tea (Lipton Ice Teas)1290.75
Tea (Nestea Ice Tea)16342.13
Caffeinated Sodas
Cocoa Cola Classic1234.52.83
Cocoa Cola Diet12453.75
Pepsi12383.17
Pepsi (Diet)12363.00
Dr. Pepper12413.42
Dr Pepper (Diet)12413.42
Highly Caffeinated Sodas
Bawls1066.76.67
Jolt Cola23.52209.36
Mello Yello1252.54.38
Mountain Dew12554.58
Red Bull8.3809.64
RockStar1616010.00


Since I had two tea bags of green tea and one cup of tea today, 25*2+47 = 97mg of additional caffeine has come into my body from the tea drinking.

Then how much is OK? According to about.com, it is generally agreed that 300mg of caffeine per day is safe. I’ve already taken about 132mg of caffeine today, and most probably will drink one cup of coffee with some sweets this evening. That is additonal 77mg+ of caffeine. However, there will be some amount of caffeine in other foods, for example, the stir-fried noodle I had as lunch today, might also hold some caffeine in it, considering the various ingredients in it. According to some source, the caffeine in green tea is less absorbable into the body because of other substances in green tea. And I don’t have a clue whether the figures in the above table factors in this or not.

Still, I think looking at a table like that once in a while will keep you from having another cup of coffee. Yes, only sometimes, but sometimes is better than never. :)

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