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Women diagnosed as having breast cancer are more likely to survive if they take large doses of vitamin C. Most scientists think that cancer survivors should be careful about taking vitamin preparations.
According to an in-vitro study done at the Universiti Putra Malaysia vitamin C undermines the effect of tamoxifen, but it’s worth noting that the researchers only used the vitamin C analogue dehydroascorbic acid. If you also know that a) ascorbic acid can have similar effects as free radicals in cells [because when it’s converted into dehydroascorbic acid hydrogen peroxide is released] and b) that healthy cells generally react to this but cancer cells don’t and c) that dehydroascorbic acid does not have such a radical effect, can you conclude from the Malaysian study that breast cancer survivors should not use extra vitamin C?
The researchers also noticed a similar effect when they looked at total vitamin C intake: the more vitamin C the women consumed on a daily basis, the better their survival chances.
The association between dietary vitamin C intake and breast cancer survival is inconsistent and few studies have specifically examined vitamin C supplement use among women with breast cancer.
Studies were identified using the PubMed database through February 6, 2014 and by examining the references of retrieved articles.
The ten identified studies examined vitamin C supplement use (n=6) and dietary vitamin C intake (n=7) and included 17,696 breast cancer cases, 2791 total deaths, and 1558 breast cancer-specific deaths.
Results from this meta-analysis suggest that post-diagnosis vitamin C supplement use may be associated with a reduced risk of mortality.
Researchers are putting a group of men with the illness through their paces to explore possible health benefits.
Exercise training is being examined as a possible treatment for prostate cancer in a pioneering new study. A group of men with the illness are being put through their paces with weekly aerobic sessions by researchers to explore the possible health benefits. Previous evidence has suggested that exercise can improve survival chances for those diagnosed with the disease. Backed by Cancer Research UK, it is hoped the year-long study will lead to a full trial, thought to be the first of its kind, to determine if exercise should be used as an NHS treatment.
Prostate cancer is the most common form of cancer among men, with 43,400 cases diagnosed each year, claiming around 10,800 lives.
Volunteer David Curtis, 68, was diagnosed with the illness last March and is counting increased exercise as one of his New Year’s resolutions. High levels of PSA, a protein produced by prostate cells, in the bloodstream can be a sign of cancer. Current forms of treatment for prostate cancer include surgery and radiotherapy, both of which carry risks and side-effects. Cancer experts have spoken of the importance of diagnosing the disease as early as possible, with the chance of survival more than three times higher when some of the most common types are diagnosed in the earlier stages. Cancer Research UK said more than 90% of patients are alive 10 years after being diagnosed with eight cancers at stage one, compared with just 5% of those who do not find out they have the disease until it has reached stage four. The stage of a cancer is based on how large the tumour is and how far it has spread in the body. Previous research has also shown it costs significantly less to treat patients who are diagnosed with early-stage cancers.
One in two people will develop cancer at some point in their lives and as more people benefit from improved healthcare and longer life expectancy, the number of cancer cases is expected to rise. The charity said that for eight common cancers - bladder, bowel, breast, cervical, womb, malignant melanoma, ovarian and testicular - which together account for more than 40% of all cancer cases, more than a quarter (27%) are diagnosed at the later stages of three or four. But around 80% of patients diagnosed with these common cancers at the earlier stages of one or two survive for at least 10 years.
Cancer Research UK's director of early diagnosis, Sara Hiom, said: "These figures show the prize on offer if we can diagnose more cancers earlier.
Dr Richard Roope, Cancer Research UK's GP expert, said: "Diagnosing cancer early isn't always easy - the symptoms may be vague or similar to less serious conditions, so cancer isn't always the first thing you or your doctor considers.
It's a fun game to teach kids, and one where the strategy of winning (which in theory should be totally random), is based on psychology. However, if I told you that Albert is friends with Bob, and Bob is friends with Charlie, you can’t assume that Albert is also friends with Charlie!
You can read a little more about intransitive games on my posting about How to win free drinks from your friends using dice. There are numerous articles on the web that talk about strategy from the psychological perspective. What I am going to look at in this article is sensitivity analysis based on the different concentrations and populations of players and moves (I’ll explain all in just a moment).
These are the Rock Wolf, the Scissor Rat, and the Paper Snake (I think you can see where I am going with this).
On this island, there is a natural state of dynamic equilibrium with the three species balancing each other out. Imagine there are a lot of people in a room, and they are going to play a giant game of rock, paper, scissors.

To play each round, two random people are selected from the pool (the players still in the game) and challenge one another. The class that survives is determined to be the winner (this could be as few as one person). The probability of being the winning tribe depends of the concentrations (relative ratios) of the starting players. Obviously, if the ratios of Rock, Paper and Scissors at the start of the game are the same, the probabilities of being the last tribe standing are the same (This should be obvious from symmetry, and from the fact the intransitive property that each class is the same with exactly one strength and one weakness each). To model this system, I wrote code to perform this contrived Rock, Paper, Scissors game using a random number generator to select two opponents for each round.
It's no great surprise, as mentioned earlier, that if the distribution of starting entities is symmetrical, so are the results.
Below, I've kept the number of starting Rocks and starting Papers at ten, and adjusted the number of starting Scissors.
This pattern increases as the number of starting scissors decreases, peaking, then falling as the number of scissors is very low.
The keys to winning in this survival race are not just to be strongest yourself, but to make sure that enemy of your emeny is also strong. The paper, initially, in this example is less sensitive to changes in the environment, keep close to the same percentage of winning as the number of scissors decreases. As we increase the population sizes, however, the paper does become more sensitive to changes in scissors. Interestingly, for these data sizes, the peak chance for scissors to survive is when we start with 13 of them.
Another interesting phenomenon is that, as the population sizes increases, the stability of Rocks remains constant longer (and higher) as the scissors decrease cf.
The chance of a rock winning falls monotically (it never increases again), unlike paper, which does. The average number rounds to find a winner has an interesting shape curve too, with a noticeable peak, and a shallow minimum.
Below is a table of keeping the number of scissors constant, and this time reducing the starting numbers of both Rocks and Paper. Changing two of the three variables at the same time is hard to visualize, and also changing the denominator of the sample each time does not create a strictly level playing field (each time an additional scissor is added it changes the total number of players in the game). A better way to plot this data is in the form of a Ternary Mixture Plot, and the use of concentrations. We are constrained, because the flask can only hold 50 ml, and we also want to see the effect of different concentrations of mixtures.
Since the volume in the flask is constant, this allows us to appreciate how the change in concentration effects things. This data can be plotted inside an equilateral triangle, where the height of the triangle represents the full volume. The top left corner shows pure Rock and as we move away from this, in a direction perpendicular to the opposite wall, we decrease the concentration of Rocks in the starting conditions. WASHINGTON (AP) — In more than three decades of trying to breed pandas at the National Zoo, there’s been plenty of heartbreak. Kelly doesn’t expect interest in the slow-moving, cuddly looking bears to subside even if successful breeding becomes routine. Nursing twins doesn’t appear to come naturally to pandas, which are endangered, with roughly 1,800 living in the wild and 350 in captivity. The cubs have squealed loudly when taken away from Mei Xiang — one of several signs that they are strong and healthy. Ling-Ling and Hsing-Hsing, the pandas pair lent to the United States by China after Richard Nixon’s historic visit in 1972, successfully mated five times, but none of the cubs lived longer than a few days. There’s no timetable for performing genetic testing, and zoo officials said it will be three to four weeks before their genders are known.
Over the next few weeks, zoo staffers hope to develop a routine for swapping the cubs and monitoring their growth.
See photos from the 2016 Democratic National Convention held in Philadelphia, Pennsylvania.
Once you have the essentials covered, add personal hygiene and sanitation items to the kit — large trash bags and cans, toilet paper and household liquid chlorine laundry bleach.
Please note that we are unable to respond back directly to your questions or provide medical advice.
As the fastest growing consumer health information site a€” with 65 million monthly visitors a€” Healthlinea€™s mission is to be your most trusted ally in your pursuit of health and well-being. And yes, they can take vitamin C in supplement form, Swedish nutritionists at the Karolinska Institutet concluded after carrying out a meta-study. These are good for healthy cells they say, but may be even better for cancer cells that have survived chemotherapy, radiation and hormone therapy.

Women who have the kind of breast cancer in which the cancer cells need estradiol to grow are given tamoxifen for a number of years after surgery, chemotherapy and radiation treatment.
In the body there is a balance between the vitamin C analogues dehydroascorbic acid and ascorbic acid. They gathered data from 10 epidemiological studies in which researchers had followed a total of 17696 women for a number of years after their treatment, and kept track of how much vitamin C the women consumed daily. And guess what: The women who used supplements containing vitamin C had higher chances of survival than women who had not taken any supplements. The purpose of this study was to summarise results from prospective studies on the association between vitamin C supplement use and dietary vitamin C intake and breast cancer-specific mortality and total mortality.
Prospective studies were included if they reported relative risks (RR) with 95% confidence intervals (95% CIs) for at least two categories or as a continuous exposure.
Dietary vitamin C intake was also statistically significantly associated with a reduced risk of total mortality and breast cancer-specific mortality. One of the main reasons early diagnosis improves survival is that more treatment options are available to patients when the disease is in its early stages and they are more effective.
However instead of autonomy in selection, their choice of Rock, Paper, Scissors is pre-ordained. When the number of starting scissors is 17, the chances paper winning is at a minimum, and this percentage chance increases with the number of scissors. 19, 2011, file photo, Mei Xiang, the female giant panda at the Smithsonian's National Zoo in Washington, eats breakfast. More cubs born in Washington have died than survived, and news of a birth has often been greeted warily. They don’t just have an apparently healthy pair of twins, born Saturday night to panda mom Mei Xiang. By late Sunday afternoon, the twins had traded places three times without incident, with Mei Xiang cradling them in turn.
Although one weighed in at roughly 4 ounces and the other was just 3 ounces at birth, both are considered within the healthy weight range. Keepers are prepared to bottle-feed the cubs if necessary, but they won’t do it unless one of the pandas is underweight or has other health problems.
In addition to Bao Bao, Mei Xiang and the new cubs, the zoo is also home to an adult male panda named Tian Tian. This time, she was artificially inseminated with semen from Tian Tian and another panda in China that was determined to be a good genetic match.
See the full-page poster version that appeared in the Winter 2012-2013 print edition of the newspaper. The California Emergency Management Agency advises that the first 72 hours after a disaster are critical. Your kit should be easily accessible and have enough supplies for you, your family and pets to survive for at least three days. The American Red Cross advises using 16 drops of bleach per gallon to sterilize any water that’s not bottled. The American Red Cross distributes an iPhone app called Shelter View, for finding out when and where shelters have been opened in your area during disasters.
Both of which will support, guide, and inspire you toward the best possible health outcomes for you and your family. Every 100 mg vitamin C that women with breast cancer consume daily reduces their chance of dying by a quarter, the researchers discovered. Scientists point to in-vitro studies for example in which an analogue of vitamin C protects breast cancer cells – see one here above – against the cancer medicine tamoxifen.
But in the past decade, Chinese breeders have come up with a system: Every several hours, they swap out the cubs, giving each one the critical time it needs to nurse and bond with its mother.
If that panda turns out to be the father of one or both cubs, it would benefit the species’ genetic diversity, zoo officials said. Electricity, gas and water may be unavailable and first responders will be busy focusing emergency services on the most serious crises.
The California Emergency Management Agency breaks down kits into: essentials, sanitation, safety and comfort, cooking and tools and supplies.
Veterinarians performing an ultrasound Wednesday detected what they think is a developing fetus. Since every point within the triangle has the property that the sum of the perpendiculars from that point on the sides of the triangle is equal to the height of the triangle, it is evident that the composition of a ternary mixture can be represented by fixing a point within the triangle such that the lengths of the perpendiculars from the point to the sides of the triangle are equal respectively to the fractional amounts of the three components present.

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