Post By Dr_Dave
Post By Dr_Dave
Post By Dr_Dave
Post By Rocky
Interesting article on benefits of coffee
Interesting article on benefits of coffee, though I haven't seen the original papers yet
Put the kettle on - a new study has found that drinking two cups of coffee a day could reduce the risk of developing liver cancer by a third.
Researchers at the University of Southampton and the University of Edinburgh analysed data from 26 separate studies involving over two million participants and found that people who consume two cups daily have a 35 per cent lower risk of developing hepatocellular cancer (HCC), the most common form of primary liver cancer.
It's just the latest in a slew of reports about the supposed health benefits of the brew. Last month a Harvard University study declared that drinking three cups of coffee a day (even decaf) could help you live longer.
And there have been plenty more. From type 2 diabetes through to Parkinson's disease, the headlines would suggest that coffee is a magic elixir for all sorts of ills. But is it really?
Here, we have scooped up some of the latest coffee research to try to sort the beans from the granules when it comes to health claims. It's not an easy task. According to Harvard School of Public Health, coffee contains hundreds of different compounds: some are good for human health; others aren't.
This complexity accounts for the fact that scientific opinion about coffee has 'flip-flopped' in the past. The good news is that your coffee addiction probably is not bad for you (apart from the impact on your wallet) - but it falls a long way short of being a health drink.
1. Heart disease
A Korean study published in the journal Heart last month showed that drinking 3 to 5 cups of coffee a day (what they called "moderate consumption") was associated with less calcium build-up in the arteries. But headlines declaring that coffee "prevents heart attacks" were wrong, because the study did not find that coffee drinking confers actual benefits. (The British Heart Foundation also urged caution about interpreting results from a survey carried out in South Korea, where people enjoy a different diet and lifestyle to those in the UK) The new Harvard study suggests moderate coffee consumption reduces the risk of dying prematurely from heart disease. But some other studies actually link coffee to risk factors like raised blood pressure and cholesterol, so more research is needed in this area.
A Harvard School of Public Health review of coffee research recently found that drinking up to six cups of coffee per day was safe and did not increase the chances of dying from any particular cause, including cancer or heart disease. But closer reading of the study reveals it does not give the green light to rampant coffee consumption. The research involved men and women in their 40s and 50s who were healthy to start with, and was based on standard 240ml cups of coffee containing 100mg of caffeine with a little milk or sugar. Many consumers buy larger cups of coffee containing as much as 330mg of caffeine per serve, which are often loaded with sugary flavourings and/or whipped cream.
3. Type 2 Diabetes
An American Diabetes Association review of coffee research last year found "strong" evidence that drinking 6 cups of coffee per day could reduce the risk of type 2 diabetes by 33 per cent for both men and women, and the new Harvard study backs this up. However, the link is still unclear. Studies show the results are roughly the same for both caffeinated and decaffeinated coffee, suggesting an ingredient other than caffeine is responsible. Some studies also suggest that people who have diabetes and struggle to control their glucose levels might be better opting for decaffeinated coffee.
4. Parkinson's, Alzheimer's and Multiple Sclerosis
Various studies have linked higher caffeine intake to a "significantly" reduced risk of developing diseases that involve degeneration of brains cells including Parkinson's, Alzheimer's and Multiple Sclerosis. But researchers say the findings do not prove that coffee fights these conditions and that other factors might be involved. Again, more research is needed before doctors actually recommend drinking coffee to reduce the risk of developing these conditions.
5. Types of coffee
While research pointing to the potential health benefits of coffee is growing, it's worth considering that not all cups of java are the same. According to Harvard School of Public Health, coffee contains cafestol, a "potent" stimulator of cholesterol levels, which is strained out in coffee made using filter papers but present in coffee made other ways, such as in a caffetière or espresso machine. People concerned about their cholesterol should opt for filtered coffee, say the experts.
It's not a myth: coffee really does disrupt your sleep. Studies show that to enjoy a peaceful night's sleep, avoid drinking coffee for at least six hours before going to bed.
7. Other health risks
Experts point out that coffee drinking often goes hand in hand with cigarette smoking, while some studies also show that people who drink lots of coffee tend to exercise less. Pregnant women in particular are advised to restrict their coffee intake to one cup per day. The precise effect is unclear, but studies appear to confirm that caffeine passes through the placenta to be absorbed by the foetus
Is this a medical endorsement Doc? There are lots of vague words like 'suggest', 'could', 'tend', 'unclear', 'probably'.
The main advice of the article is "The good news is that your coffee addiction probably is not bad for you (apart from the impact on your wallet) - but it falls a long way short of being a health drink."
Agreed the wording is loose hence not an endorsement from me. I haven't read the original papers but will do when back to work
It may not be a health drink but maybe a 'not bad for your health drink"!
Thought it was interesting though
I find 6 cups of coffee a day to be a bit on the extreme side.... Surely that can't be good for you.
Are you an actual medical doctor?
Originally Posted by Dr_Dave
Aside from that question, I guess we do need to be careful when giving medical information on this web site. Although I have been told that I would benefit from drinking coffee (obviously in moderation).
Controversially, Queensland Health suggested that to battle doctor fatigue on long shifts up to 6 cups of coffee should be ingested! This was many years ago though, and I imagine not evidence-based.
6 cups a day keeps the doctor awake - ABC News (Australian Broadcasting Corporation)
A tricky subject... certainly several medical benefits but a few negatives too. Coffee is often cited together with tea and red wine as our major source of antioxidants, although some say this reflects on how poor our diet is!
An interesting article from Science news.
Addressing previous comments:
I have not read the original papers, so am unsure of validation.
This is an interest story.
It is available in the general media.
It is not my research, nor has my recommendation.
Hence treat is as such.
Science news state
"Content on this website is for information only. It is not intended to provide medical or other professional advice."
Science News from research organizations
Drinking coffee may reduce your chances of developing Alzheimer's, Parkinson's
November 5, 2018 University Health Network
A new study suggests drinking coffee may protect you against developing both Alzheimer's and Parkinson's disease.
Approximately 500 billion cups of coffee are consumed worldwide each year.
A new study out of the Krembil Brain Institute, part of the Krembil Research Institute, suggests there could be more to that morning jolt of goodness than a boost in energy and attention. Drinking coffee may also protect you against developing both Alzheimer's and Parkinson's disease.
"Coffee consumption does seem to have some correlation to a decreased risk of developing Alzheimer's disease and Parkinson's disease," says Dr. Donald Weaver, Co-director of the Krembil Brain Institute. "But we wanted to investigate why that is -- which compounds are involved and how they may impact age-re‐ lated cognitive decline."
Dr. Weaver enlisted Dr. Ross Mancini, a research fellow in medicinal chemistry and Yanfei Wang, a biolo‐ gist, to help. The team chose to investigate three different types of coffee -- light roast, dark roast, and de‐ caffeinated dark roast.
"The caffeinated and de-caffeinated dark roast both had identical potencies in our initial experimental tests," says Dr. Mancini. "So we observed early on that its protective effect could not be due to caffeine."
Dr. Mancini then identified a group of compounds known as phenylindanes, which emerge as a result of the roasting process for coffee beans. Phenylindanes are unique in that they are the only compound inves‐ tigated in the study that prevent -- or rather, inhibit -- both beta amyloid and tau, two protein fragments common in Alzheimer's and Parkinson's, from clumping. "So phenylindanes are a dual-inhibitor. Very inter‐ esting, we were not expecting that." says Dr. Weaver.
As roasting leads to higher quantities of phenylindanes, dark roasted coffee appears to be more protective than light roasted coffee.
"It's the first time anybody's investigated how phenylindanes interact with the proteins that are responsible for Alzheimer's and Parkinson's," says Dr. Mancini. "The next step would be to investigate how beneficial these compounds are, and whether they have the ability to enter the bloodstream, or cross the blood-brain barrier."
The fact that it's a natural compound vs. synthetic is also a major advantage, says Dr. Weaver.
"Mother Nature is a much better chemist than we are and Mother Nature is able to make these com‐ pounds. If you have a complicated compound, it's nicer to grow it in a crop, harvest the crop, grind the crop out and extract it than try to make it."
But, he admits, there is much more research needed before it can translate into potential therapeutic options.
"What this study does is take the epidemiological evidence and try to refine it and to demonstrate that there are indeed components within coffee that are beneficial to warding off cognitive decline. It's interest‐ ing but are we suggesting that coffee is a cure? Absolutely not."
Materials provided by University Health Network. Note: Content may be edited for style and length.
1. Ross S. Mancini, Yanfei Wang, Donald F. Weaver. Phenylindanes in Brewed Coffee Inhibit Amyloid-
Beta and Tau Aggregation. Frontiers in Neuroscience, 2018; 12 DOI: 10.3389/fnins.2018.00735
Cite This Page:
University Health Network. "Drinking coffee may reduce your chances of developing Alzheimer's, Parkin‐ son's." ScienceDaily. ScienceDaily, 5 November 2018. <www.sciencedaily.com/releases/2018/11/181105160825.htm>.
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Content on this website is for information only. It is not intended to provide medical or other professional advice.
If I have learned anything in my 66 years, it is:
Use common sense in relation to what you put in your body.
Listen to what your body is telling you.
In the absence of any negative signs practice moderation.
I would consider a daily intake of any one of the following to be excessive and probably harmful: 6 standard drinks, 6 cups of coffee, 6 cans of Coke, 6 chocolates, 6 burgers, 6 cakes etc, etc, and yet I have known people who have done all of those, and sometimes more than one, with no noticeable ill effects (in the short term at least).
In relation to coffee, my reaction to more than two shots a day tells me that it is probably not good for me. Even two shots affects my sleep patterns. Four affects heart rate and produces agitation.
This is my body saying to me "Back Off". Obviously it will be different for others. It's all about individual susceptibility.