We’re rewarding the question askers & reputations are being recalculated! Read more.

Questions tagged [caffeine]

Caffeine is a stimulant drug with a bitter taste. It is produced naturally by coffee plants. It can survive the heat of roasting and is water-soluble, so brewed coffee will contain caffeine. Use this tag for questions relating to caffeine content.

Filter by
Sorted by
Tagged with
54
votes
7answers
94k views

How can I figure out how much caffeine is in my cup?

I haven't been able to find a good way to approximate the amount of caffeine in the coffee I make. Googling yields information like this Mayo Clinic article that mixes serving sizes and brewing ...
9
votes
2answers
2k views

How many cups of coffee is it safe to consume per day?

This question is in two parts: How many cups of coffee can one safely consume each day before first experiencing side-effects? and How many cups can one consume before it's considered harmful to one'...
12
votes
4answers
1k views

Will I be addicted to caffeine?

If I drink coffee everyday, will I be addicted to it, or is it just a myth? Is there any risk to my own health due to caffeine?
8
votes
4answers
4k views

What are the side effects of drinking too much coffee?

Are there any side effects when you drink too much strong coffee? Is it dangerous? In example, if I drink the world's most expensive Starbucks coffee (costing $55/£33) featuring 60 espresso shots at ...
16
votes
2answers
62k views

How much caffeine is in an espresso shot?

Many people seem to think that a 0.85oz shot of espresso has the same amount of caffeine as a cup of coffee. Is there any validity to this?
16
votes
3answers
927 views

What type of roast has the lowest caffeine content?

I'm aiming to reduce my caffeine intake, but don't want to drop coffee altogether. What roasts / beans release the least amount of caffeine into my body when drank?
7
votes
1answer
548 views

Does caffeine raise cholesterol (good or bad)?

I've heard that coffee can raise your cholesterol. If that's true, is it a bad thing? Is regular or acute exposure to coffee dangerous in this way?
11
votes
3answers
2k views

What preparation method yields the most caffeine?

I want to make the most caffeinated coffee possible. What method should I use to yield the most caffeine content per liter?
7
votes
1answer
717 views

Does caffeinating my hair follicles help prevent hair loss? [closed]

In the UK there is a product being very heavily marketed at the moment: Caffeine Shampoo. From their copy: This Caffeine Shampoo contains caffeine that can help to stimulate hair growth directly ...
5
votes
5answers
417 views

Why do I feel lousy, low, out of energy after the high coffee gives?

I started drinking a lot of coffee after coming to college. I became instantly energized and social after grabbing a cup or two. But then at night I became extremely dull, unsocial-able, and quite ...
11
votes
2answers
2k views

Coffee in a flask - How long can I store?

In the past I have made up to 2L of coffee using a french press and stored it in a flask that I have brought to lectures. Sometimes I will continue drinking this after 5 days, but it tastes pretty bad....
9
votes
1answer
534 views

How much caffeine is lost after 24 hours?

Suppose I brew a 16 oz cup of coffee, take just one generous sip (one ounce), and then put the rest in the fridge. Just how "stale" is my coffee, when I revisit it 24 hours later?
5
votes
3answers
5k views

How long should I stir French press before “pressing”?

What are the pros/cons and effects of stirring, either "too much" or "too short", in a French press? My rule of thumb for steeping is to let the coffee cool down to a drinkable temperature, then ...
3
votes
2answers
178 views

Finding if coffee is a health risk after best before

I have couple of coffee in my cabin where I visit on weekend and I saw 2 coffee which were best before xx 2017. One has big chunk of coffee and looks faded and the other got faded colour. I have no ...
1
vote
1answer
57 views

How coffee activates the nerve cells of the brain and what is the mechanism of it?

After drinking coffee we feel so relaxed and our brains feel so free. Why this happens?
11
votes
3answers
42k views

Which of these espresso variant contain more caffeine?

Can you please explain what is the difference between these types of coffee and which one of them contains more caffeine then the others: American Espresso Lungo Ristretto And please if it's ...
15
votes
9answers
2k views

How can I stay off coffee after I quit?

I have quit drinking coffee many times, and it was never that difficult for me to do, but can never stay quit for more than about 3 or 4 weeks. I typically drink 3, homebrewed cups a day, and only ...
9
votes
1answer
525 views

Why does coffee heal headaches in some people but causes it in others?

I know that it could be related to the effects of caffeine with blood pressure, but I don't know if there are any other side effects of caffeine itself or from the other chemical components inside a ...
7
votes
1answer
2k views

How are caffeine pills made?

I tried googling but nothing on the manufacturing, only dosage FAQs etc. The question is: how are caffeine pills made, are they produced using synthesized caffeine, how much of a chemistry is ...
9
votes
2answers
7k views

Roughly how much caffeine am I ingesting when I eat chocolate coffee beans?

I love a bag of chocolate coated coffee beans, but I do tend to eat them much like any other sweets (read: in large quantities with little to no restraint). Whole bags within arms' reach will vanish. ...
7
votes
2answers
375 views

Does a decaffeinated coffee have zero or little caffeine in it?

Does any average kind of decaffeinated coffee have zero or very little caffeine in it?
6
votes
2answers
472 views

Will I develop a caffeine dependency by skipping 2 days?

A couple of months a ago I broke my daily caffeine habit because I disliked waking up every morning already "needing" caffeine. But, I LOVE coffee and I LOVE the buzz caffeine provides. So, for the ...
4
votes
2answers
305 views

Will I get dehydrated from drinking coffee?

In fact, 54 percent of Americans over the age of 18 drink an average of 3.1 (8 oz) cups per day; the equivalent to 40 billion dollars spent solely on the ever-so-popular cup o' Joe. With over half of ...
1
vote
3answers
2k views

Does coffee consumption cause continuous chest pain? [closed]

I drink coffee twice a day for almost a month. Lately, for last few week, I feel chest pain right after drinking coffee. I initially thought that was some gastric related problem. But even after ...