I'll write a proper title and post later, I just wanted to post the image. I don't think I've ever seen the normally restrained
New York Times do this before. It certainly caught my eye when the page opened. It's probably just as well the looping stops after a few seconds.
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Let's start with a question: which is healthier, tea or coffee?
Question 2: how confident are you of your answer?
Had you asked me these questions just a few years ago, my answers would have been that tea, especially green tea, is healthier than coffee. In fact, I believed, as I think was a popular belief, that coffee was unhealthy in some ways, and that tea was generally good for health. And I would have been fairly confident. You might already have guessed that these confident beliefs were wrong.
I actually started seeing solid, well-designed research papers on the health effects of coffee a few years ago now, and I have admit, as daily coffee addict (and I do mean addict - I have a physical, if not psychological, dependence on the drug) I was very pleased to discover that as more research was done, coffee in moderate amounts, say 2 to 6 cups a day, was almost entirely good for health.
But until this morning, I had not realised how very weak were the common health claims made for tea, especially green tea. It turns out, according to a comprehensive analysis of meta-studies by Aaron E. Carroll in the
New York Times article
"Health Benefits of Tea? Here’s What the Evidence Says," that whilst the evidence does not support "strongly recommend[ing] that anyone take up tea," it might offer some health benefit and is unlikely to be harmful (2015b). This did surprise me, but Carroll gives links to reliable sources all the way through - mainly studies he cites - and he certainly seems to know what he's talking about. Carroll, a professor of pediatrics at Indiana University School of Medicine, conveniently gives a link to an earlier article he wrote,
"More Consensus on Coffee’s Benefits Than You Might Think," in which he reviews the evidence for the health benefits of coffee (2015a). The evidence supported ideas about coffee did not surprise me, but I liked seeing them all in one place, again with links to the studies that support them.
Now I'm wondering why I ever believed that coffee was unhealthy and green tea was healthy with such confidence. I guess it was just that everyone around me accepted those beliefs, and advertising contributed its bit. More importantly, until a few years ago, when my very real addiction to coffee worried me enough to push me to do some research into the facts about coffee, I hadn't realised it was largely healthy. I drink at least two large cups of strong, fresh brewed black coffee every day, and have for almost forty years now. It was a very welcome surprise to find out that I'd been wrong about coffee, and that many people still were. But the surprise this morning on learning that the popular belief in the health benefits of green tea is not at all solidly supported by evidence was a lot more surprising. To balance things out a bit, I could also tell a story or two about the less pleasant consequences of actually being addicted to coffee, but perhaps in another post.
It was a great joy, and very refreshing, to have my third coffee today when I saw my visiting guests off around 7:00 PM.
Now, which are you going to opt for: tea or coffee?
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My question is:
Provisional question: What do you think the
New York Times story I've chosen to respond to is about?
(If we can have provisional thesis statements, why not a provisional question?)
My real question is:
Do you check your beliefs about facts against solid evidence?
Carroll, A. E. (2015a, May 11). More Consensus on Coffee’s Benefits Than You Might Think.
The New York Times. Retrieved from
http://www.nytimes.com/2015/05/12/upshot/more-consensus-on-coffees-benefits-than-you-might-think.html
Carroll, A. E. (2015b, October 5). Health Benefits of Tea? Here’s What the Evidence Says.
The New York Times. Retrieved from
http://www.nytimes.com/2015/10/06/upshot/what-the-evidence-tells-us-about-tea.html