
Colon cancer is not something that arrives out of the blue one morning. It starts off with a single damaged colon cell which passes its ‘defect’ on to certain of its fellow cells. But day after day, year after year, this cell accumulates new defects which cause increasing levels of dysfunction, until the final mutation leads to the irreparable
development of an uncontrollable cancer cell.
To illustrate the process more clearly, we can use a chronological arrow, with the initial mutation shown on the far left, and the final one resulting in the tumour, on the far right. It’s possible that 10, 20 or even 50 years might elapse between these two stages, but either way, these mutations tend to accumulate over time, moving us slowly towards the right of this axis.
At this very moment, you will be somewhere on this axis. Perhaps, without knowing it, you are (like person no. 3) just one or two mutations away from the one that will trigger the disease. On the other hand, you might be in the same place as person no. 1 – some distance away from this fateful stage. But whatever your position, you will tend to move towards the fatal outcome: it’s just mathematics. Which is how each year, as a result of this apparently inexorable rightward progression, 43,000 people end up crossing the outer limit signalling the onset of colon cancer.
What happens next for them? It all depends on how quickly they react. If too much time passes before the cancer cells silently proliferating in their colon are detected, they will continue to move to the right of this line, getting ever closer to the point of no return: death. Each year, 18,000 people go down this fatal, one-way path.
If, however, the tumour is discovered while they are still at the initial development stage (within the ‘emergency zone’), they can still expect to escape the worst. Medical intervention will to some degree halt the disease’s progress, and if cured, they will return in the other direction, some distance away from colorectal cancer.
How quickly do we progress along this axis?
This is the first piece of good news: the speed with which we move towards colon cancer differs from one individual to another. The fastest may reach the other end in less than 40 years, while some people will never get there.
The rate at which we progress depends, to a small degree, on the genetic material we inherit from our parents: some people will unfortunately move rapidly along this line because of a genetic predisposition to mutations. But the second piece of good news is that this rate depends
primarily on our diet. Scientists agree that between 70% and 90% of colorectal cancers could be avoided with preventive dietary interventions. This is hardly surprising given that this is a region of the body which is constantly exposed to the foods we ingest, as well to the breakdown products they produce and the bacterial populations they promote.
In other words, you can slow down or stop your rightward progression provided you prioritise foods, nutrients and micronutrients that are scientifically recognised as
natural and effective protectors against colorectal cancer. The more you include these compounds in your diet, the more you will reduce your risk of one day falling victim to colorectal cancer. It doesn’t matter that you have previously had a terrible diet or that you are getting close to the limit, there is still time to prevent those final mutations!
So, what dietary changes do you need to make? There are currently at least four, each of which will help you reduce your relative risk of developing colorectal cancer, and these risk reductions obviously have a cumulative effect: the more you embrace these measures, the slower your progress along the axis of colorectal cancer.
1) Increase your fibre intake.
Unlike refined cereals which only retain the grain’s endosperm, whole grains also contain the bran and the germ, both of which are high in fibre (a complex carbohydrate that resists digestion in the small intestine and ferments in the large intestine). It is this feature which explains why almost every study conducted on the subject so far has found an association between a high intake of whole grains and a reduced risk of colorectal cancer
1-4.
What are the mechanisms involved? Researchers believe there are dozens of mechanisms that contribute to fibre’s preventive effect against colorectal cancer, including the reduced transit time of waste products, the decrease in adiposity, the cancer-fighting properties of the short-chain fatty acids produced by bacterial fermentation of fibre
5, and improved sensitivity to insulin
6. But the most important mechanism may be linked to our gut flora: fibre promotes specific bacteria which produce butyrate, a source of energy for colon cells
7, which helps to prevent tumours
8.
What’s the problem? The way diets have developed in industrialised countries has led to a drastic reduction in dietary fibre intake (as a result of a fall in fruit and vegetable consumption, as well as the systematic refinement of cereals).
And the solution?: Always choose whole grains, increase your fruit and vegetable intake and take plant fibre supplements such as
Psyllium Seed Husk (formulated from psyllium seeds) or comprehensive formulations such as
Colon Cleanse Formula which also contain ingredients that regulate intestinal transit.
2) Increase your vitamin D intake.
In 1980, Garland and his research team put forward an explanation for a surprising fact: the death rate from colorectal cancer is exceptionally high among populations with low exposure to sunshine (such as Scandinavian countries). They suggested that this lack of sun leads to inadequate production of vitamin D by the body, which in turn increases the risk of cancer. The studies that followed bore this out: there is indeed an inverse association between vitamin D intake (including from supplements
9-12) and incidence of colorectal cancer.
What are the mechanisms involved? Vitamin D’s scope of activity is huge. Through various complex mechanisms, it combats cell proliferation and inflammation (a significant factor in colorectal cancer), promotes apoptosis of damaged cells, and prevents the supply of nutrients to cancer cells (by impeding the formation of new blood vessels).
What’s the problem? According to research, optimal levels are somewhere between 90 and 100 nmol/L
13. Yet
these levels cannot be achieved if you follow the 600-800IU recommended by health authorities. That’s why a number of working groups are pushing for these official recommendations to be raised (to beyond 1000IU - even 2000 IU)
14-15.
And the solution?: Increase your consumption of vitamin D-rich foods (fish and fortified soya drinks for example) and take a good quality supplement every day (
Vitamin D3 5000 UI and
Vitamin D3 1000 IU are among the very best in their category).
3) Increase your intake of cruciferous vegetables
Vegetables in general are known to offer particular benefits for preventing cancer, but cruciferous vegetables are especially protective! A meta-analysis showed that a good intake of cruciferous vegetables (cabbage, watercress, broccoli …) reduced the risk of colorectal cancer by 16% compared with a low intake (typical among most Western populations).
What are the mechanisms involved? Crucifers contains glucosinolates which can be converted into isothiocyanates (ITCs) and indole-3-carbinol (I3C) by certain bacteria that thrive in the colon
16. These two compounds have widely-documented cancer-protective effects: they are particularly effective against tumour formation
17-18, they inhibit the growth of cancer cells
19-20 by encouraging their destruction) and they combat H. Pylori
21 (in both animals and humans), a bacteria recognised as a key cause of stomach cancer.
What’s the problem? Consumption of crucifers is low among Western populations. And in most cases, storing and cooking these vegetables results in a significant loss of glucosinolates
22.
And the solution?: Increase your intake of locally-grown cruciferous vegetables (eating them raw or lightly-cooked) and take advantage of natural-source glucosinolate supplements such as the excellent
Broccoli Sulforaphane Glucosinolate or
Cruciferous Detox Formula, a synergistic blend of several crucifers which immediately gives you 25 mg of Diindolylmethane (DIM) and 70 mg of Indole-3-Carbinol (I3C).
4) Increase your intake of omega-3
The effects of omega-3 on cardiovascular health are well-known but their benefits for preventing cancer, particularly colorectal cancer, tend to get overlooked. Yet clinical and epidemiological studies have demonstrated that consumption of omega-3 fatty acids (especially from marine sources) is linked to a significantly lower risk of colorectal cancer
23-24.
What are the mechanisms involved? As with fibre, omega-3 fatty acids act via different mechanisms: they reduce inflammation, modulate the activity of certain transcription factors, improve insulin sensitivity and membrane fluidity, and above all, prevent the hypomethylation of DNA
25, an epigenetic change which promotes cancer.
What’s the problem? Foods rich in omega-3 can no longer be freely recommended today due to potential contamination by methylmercury, which is toxic to the central nervous system. The French Agency for Food, Environmental and Occupational Health & Safety (ANSES) advises eating fish no more than twice a week, which clearly restricts our ability to fully benefit from the preventive properties of omega-3.
And the solution?
: It’s obvious. To obtain these molecules’ protective benefits against colorectal cancer, you need to take natural concentrates of omega-3 (EPA and DHA) such as
Super Omega 3.
‘Decelerators’ and ‘accelerators’ of colorectal cancer
Each of these four natural ‘decelerators’ will help ‘push back the deadline’, but they are even more effective when combined with reductions in the disease’s ‘accelerators’, such as:
- Excess abdominal fat.
- Regular consumption of red and processed meat26 : people who eat red meat seven times a week have an 85% higher risk of colorectal cancer than those who only eat it three times a week!
- Lack of physical activity26.
- Regular alcohol consumption and/or smoking27.
These risk factors accelerate your progression along the colorectal cancer axis which means that if you have been accumulating them for several years, there’s a chance you may already be on the far right of this line, pretty close to the last stage.
Depending on how close you are, you may be in a
precancerous state. If so, it is easily detected by screening tests and is treated surgically to help reduce the risk of cancer developing. For this reason, those aged over 50 are advised to take advantage of such screening tests (which are simple, quick and painless)! That’s the aim of ‘Blue March’, a month-long campaign to promote colorectal cancer screening, which is currently underway in countries such as the US and France. Make sure you act now, before it’s too late.
References
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