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Salar boh ... @Tianmo your favourite drink, cannot take in too much (suggested adults only consume 400mg of caffeine a day) ... Yahoo news: Caffeine Could Seriously Harm Men's Fertility: Should We All Just Quit? Caffeine has hit the headlines again as it's been found to seriously affect men's fertility. New research has found that drinking just two strong cups of Joe a day could halve their chances of conceiving a child. We know that too much caffeine isn't super duper healthy for us, but can our beloved coffee and tea really be that harmful to our health? And are we unwittingly drinking far more than is healthy without even realising? In the past women have been warned not to overdo caffeine in pregnancy and there are studies suggesting it can raise the risk of miscarriage - so most women trying to conceive cut down anyway. But this seems to be the first time men have been warned that their caffeine consumption could affect parenthood. The research at Massachusetts General Hospital in Boston showed that men who drank 265gm of caffeine a day had the least chance of becoming fathers. Experts suggest this could be because caffeine may harm sperm at a molecular level. And though men who aren't trying to conceive might not think that they have anything to worry about, it definitely raises questions about what else caffeine might be doing to our health that we have no idea about. Last year the editor in chief of the Journal of Caffeine Research Dr Jack James suggested caffeine-containing products need health warnings similar to those found on cigarette packets. Dr James, who is head of the department of psychology at Reykjavik University, Iceland, has claimed that we're all consuming way more caffeine than we think we are. Should we give up caffeine altogether? Should we be ditching our coffee habits ASAP and do we need to be checking all the foods, drinks, medicines and even cosmetics we use to make sure we're not over-doing it? It's suggested adults only consume 400mg of caffeine a day (two cups of instant coffee or four of tea). To put this into perspective, one large Starbucks coffee contains 360mg. So savour your morning cup as you shouldn't be drinking any more that day. Though some studies have linked moderate caffeine consumption to better kidney function and a reduction in gallstones, and even heart benefits, experts remain cautious. Migraine expert Dr Nicholas Silver, consultant neurologist at The Walton Centre for Neurology and Neurosurgery, told Yahoo! Lifestyle that he believed we could get rid of 80 per cent of chronic illnesses, sleep problems, migraines and headaches if we simply stopped consuming caffeine Link: https://sg.news.yahoo.com/two-cups-of-coffee-a-day-could-seriously-affect-male-fertility-thanks-to-caffeine-levels-130541083.html

7 Surprising Facts About Caffeine From : Murray Carpenter Most of us have an intimate relationship with caffeine. We crave it, love it, and take it every day in coffee, tea and sodas. It feels quite familiar. But as I researched my bookCaffeinated, I quickly learned that America’s favorite drug held surprises at every turn. Here are seven of them: 1) Coke used to have as much caffeine as Red Bull: For starters, consider energy drinks. Red Bull, Rockstar, Monster and other syrupy sweet, caffeinated drinks are suddenly everywhere. But there is really nothing new about them. As I read through the court papers from a 1911 trial pitting the federal government against Coca-Cola over the caffeine it blended into its products, I was surprised to learn that the early formulation for Coke was far more caffeinated than it is today. An eight-ounce serving had 80 milligrams of caffeine. This is the exact size and caffeine content of a modern Red Bull. Put another way, Coca-Cola pioneered the energy drink concept more than a century ago. The first Red Bull was a Coke. 2) Energy drinks still don’t have as much caffeine as Starbucks coffee: And then I ran into another popular misconception — the idea that these new energy drinks are super-caffeinated. Yes, they pack more of a caffeine punch than colas or teas, but rarely as much as coffee. It is hard to buy a coffee at Starbucks with less caffeine than a Red Bull (perhaps a single shot of espresso, or a mere four ounces of coffee). Even the popular 16-ounce Monsters and Rockstars — they supersize the Red Bull concept, doubling the size and the caffeine content — typically have about 160 milligrams of caffeine. That’s half the amount Starbucks estimates for a drip-brewed grandé. 3) We drink less coffee today, per person, than we did in the 1950s: So yes, we are drinking more energy drinks these days, but coffee culture still rules, right? We’ve got a Starbucks on every corner, it seems, and sometimes two, so we must be sipping more joe than ever. But here’s the weird thing — we drink less coffee than we did in 1950, a lot less. American coffee consumption peaked shortly after World War II, and then plummeted. Meanwhile, soft drinks became Americans’ favorite caffeinated beverages. 4) Nonetheless, coffee still accounts for most of our caffeine intake: But even as we chug more gallons of caffeinated sodas than coffee, we get more of our caffeine from coffee. Because the caffeine is more concentrated in coffee, it still provides two-thirds of the caffeine in our diet. Soft drinks come in second, and tea is in third place. 5) Most tea today is iced: And what about that tea, anyway? Again, it’s the source of a lot of misunderstanding. We typically think of tea as something prepared in a cup, with hot water poured over a tea bag, and sipped hot. But that is an archaic notion. So here’s another little-known fact — iced tea now accounts for 85 percent of the tea consumed in the US. This includes not just the sweet tea that lubricates southern living, but also the fast-growing bottled teas, ranging from Brisk and Nestea to the upscale Honest Tea and Tazo brands. 6) It doesn’t take much to get hooked: Even as our preferences have shifted toward bottled sodas and teas, with their lower caffeine concentrations, research has shown that it does not take much caffeine to develop dependence. And here is another caffeinated surprise — as little as 100 milligrams of caffeine daily is enough to get an adult hooked. That’s about five to eight ounces of coffee, two bags of Lipton tea, or three cans of Coke. At this level of caffeine consumption, most people will experience some symptoms of caffeine withdrawal if they quit abruptly. Symptoms can include lethargy, no surprise, but also irritability and, especially, the classic caffeine withdrawal headache. 7) Caffeine is now being marketed as a hangover cure:Though caffeine can actually trigger headaches in some people, for most of us it is an effective headache therapy. It is bundled into a number of prescription migraine medications, and is a key ingredient in over-the-counter analgesics like Excedrin and Anacin. That’s not too surprising. What is surprising that it is now being marketed specifically to treat a dreaded malady — the hangover headache. For younger hangover sufferers, there are energy drinks like Monster Rehab and Rockstar Recovery, delivering a bit of morning-after caffeine. And Hangover Joe’s takes the basic energy shot formula and packages it for the over-served. Anacin is capitalizing on this with its trademarked slogan: “Great night. Rough morning. Better day.” A century ago, Coca-Cola’s ads read “Tired? Coca-Cola relieves fatigue.” The newer pitches for hangover remedies, like Anacin’s “Got Sharpied?” campaign, suggest caffeine is once again being viewed as a useful tonic. However it is marketed, we, the coffee-chugging, soda-swilling, caffeine-addicted American public, are delighted to buy all of it, to feed our habit and treat our ills. Murray Carpenter is the author of Caffeinated, How Our Daily Habit Helps, Hurts and Hooks Us, recently published by Hudson Street Press.

Anyone tried successfully weaning off caffeine? I've been trying to do so but keep having headaches that won't go away unless I consume some caffeine.