exercise is not going to reduce weight if you eat more! (9 mins)
levels of fat in blood are reduced if walk because exercise turns on lipoprotein lipase genes which metabolises fat in muscles, rather than dumping fat to gut. Thus fat in blood fell by 33% as a result of the 90 minute walk the night before. (10-17 mins)
150 mins per week moderate exercise or 75 mins per week vigorous exercise is government guideline
Nottingham Uni, Prof Jammie Timmons (18 mins), 4 year study - big variation in response to exercise - 20% don't respond much to exercise, 15% respond a lot. This response has been traced to 11 genes (reference) - can predict how an individual will respond using a gene test.
23 mins: a few minutes intensive exercise a week, High Intensity Training (HIT) protocol, x3 times a week x 20s x3 equivalent to a couple of hours exercise. Glycogen is broken down, improves insulin sensitivity. Activate 70% muscles cf jogging 30%. After 6 weeks get improvement.
insulin sensitivity, if defective cannot get rid of sugar - become diabetic
HIT Benefits
23% improvement: Glycogen is broken down, improves insulin sensitivity - after 1 month
VO2 max - oxygen - non-responder predicted by genetic tests
NEAT = Non Exercise Activity Thermogenesis - calories you burn in everyday living
walking at 1.3mph doubles metabolic rate, at 2.2 mph triples metabolic rate
standing - 10% increase metabolic rate
80% people don't do regular exercise
there should never be an hour that you are just sitting down. The chair is killing millions. It's not enough to go to the gym. Got to be active all the day.
Back in 2010 my dentist thought I had Lichen Planus or Leukoplakia in my mouth because he observed streaky white patches. I was booked into a local hospital and 'put under' for a surgeon to check for pre-cancerous growth (Leukoplakia). A biopsy was taken where a tiny piece of my cheek was taken. Results were negative for cancer or a pre-cancerous condition and confirmed I had Lichen Planus, which for me has absolutely no symptoms or pain.
There may be some connection between oral lichen planus and cancer of the mouth in perhaps 1% to 3% of patients who have had the condition a long time. The exact connection between oral lichen planus and cancer is not certain, and only a very few patients with oral lichen planus ever have such complications (CGS1).
http://trialsmap.org/trial/5368 - details of ASPOD trial. RATIONALE: Aspirin mouthwash may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. PURPOSE: This phase I trial is studying the side effects and best dose of aspirin mouthwash in treating patients with oral leukoplakia.
To determine if oral topical acetylsalicylic acid mouthwash achieves modulation of COX-1, COX-2, and prostaglandin in oral dysplasia tissues in patients with oral leukoplakia.
To determine if this drug achieves alteration of histopathology and gene and protein expression in tissue.
To determine if this drug achieves aspirin-induced tissue changes relating to altered tumor biology.
To assess local and general tolerability and safety of this drug in these patients.
Aspirin and cancer – the picture becomes clearer Posted on March 21, 2012 by Jess Harris
Aspirin has been around for over a century. “Should I be taking aspirin to reduce the risk of dying from cancer?”
This is likely to be the question on many people’s minds today, which sees the publication of three reports on the effects of aspirin on cancer risk, and cancer spread – No 1 and No 2 in the Lancet, and No 3 in sister journal Lancet Oncology.
But before we look at today’s studies, we need to set the scene. Over the last few years, the evidence has been building that regularly taking the simple, cheap drug aspirin could reduce the risk of dying from cancer.
For example, a large study by Peter Rothwell from December 2010 showed that people who took 75 milligrams of aspirin (the same dose as in a ‘junior’ aspirin) every day had a reduced risk of dying from cancer.
But these results didn’t answer all the questions, and we felt it was too early to start recommending that people take low-dose aspirin every day. This is because aspirin’s not a harmless drug. In some people it can cause serious side effects, like internal bleeding.
On top of this, it wasn’t clear what the best dose is, or at what age it’s best to start taking aspirin.
Today’s studies clarify the picture a little, but because of the uncertainties we’re still recommending that people discuss things with their doctor before taking aspirin.
What do the latest studies add? The three studies published today were all led by Professor Peter Rothwell at Oxford University, who’s one of the world’s top aspirin researchers.
The studies looked at data from several large trials of taking daily, low-dose aspirin that aimed to find out aspirin’s effect on heart disease, and also measured how many people were diagnosed with cancer.
Preventing cancer Taken together, the studies provided more information about how aspirin affects the risk of cancer developing in the first place.
Earlier studies had shown that aspirin probably reduces the risk of developing bowel cancer, and some other cancers in the digestive system. But this study showed that, after three years of daily low-dose aspirin, the risk of developing cancer at all dropped significantly in both men and women.
In fact, there were nine cases of cancer in every 1,000 people taking aspirin, compared with twelve cases per 1,000 people not taking it – an absolute reduction of three cases per 1,000 people.
The cancers most strongly prevented were oesophageal, stomach, bowel and lung cancers.
Preventing cancer spreading But a new – and somewhat unexpected – finding from this research is that cancer patients taking aspirin every day appeared to have a reduced risk of their cancers spreading.
In fact, not only were regular aspirin-takers less likely to be diagnosed with a cancer that’d already spread, but (compared to non-aspirin takers) patients on aspirin diagnosed with early localised cancers had a lower chance that their cancer would spread later on.
And it also hints that aspirin could be useful for people who’ve already been diagnosed with cancer – though, importantly, this will depend on the individual case.
This is because some cancer patients will also have a higher than normal risk of bleeding, because of their cancer or treatment. So it’s important that people with cancer talk to their doctors rather than deciding to take aspirin by themselves.
Because of these two effects (the reduced risk of getting cancer, and the prevention of it spreading) , the research also suggested that regularly taking aspirin reduced the risk of dying from cancer by nearly 40 per cent after people had been taking it for 5 years.
Balance of risks and benefits
Finally, and importantly, the studies looked into the balance of benefits and harms of taking aspirin in a healthy population. This is critical, because if people are considering taking aspirin for preventing cancer, we’ve got to be very sure about whether it does good or harm overall.
As the graph below shows, over time, the benefit – lowering cancer risk – increased, while the risk of serious side effects, like internal bleeding, got smaller. Crucially, in the first three years of taking aspirin, the risk of serious internal bleeding was much higher in aspirin-takers than those who weren’t on the drug:
This risk went down over time, and after 5 years of taking the drug, the risk of internal bleeding was back at the same level as people who weren’t on the drug.
Overall, the risk of all the outcomes combined – cancer, serious internal bleeding and major heart and circulatory problems – was lower in the aspirin group. That seems to show the balance could be tipping to the benefit side. Here are the raw numbers:
But that’s not the only consideration – if people stop taking aspirin daily, their risk of a stroke goes up.
And certain people definitely shouldn’t take aspirin, because they’re at higher risk of serious complications. That includes people with asthma, stomach ulcers, haemophilia, or anyone taking other drugs that might interact badly with aspirin.
So what should I do? The first and most important thing is that if you’re considering starting to take aspirin daily, discuss it with your GP first, or your cancer specialist if you’ve been diagnosed with cancer.
In particular, there might be a reason why taking aspirin every day would be a bad idea for you personally – despite what the overall evidence says. And it’s worth discussing the benefits and harms, taking into account your own and your family’s medical history.
And if you do get the go ahead from your own doctor, you should make sure you don’t take aspirin on an empty stomach.
Today’s results are encouraging, and add to our understanding of the effects of taking aspirin daily. But there are still questions to answer. For example:
What is the optimal period of time to be taking aspirin for? At what age does the biggest benefit and smallest risk occur? Who is most likely to benefit, and who is most likely to get side effects? And how can we minimise the risk of a stroke when people stop taking the drug? Cancer Research UK scientists are running trials at the moment that aim to answer some of these questions.
And we’d also like to see some analysis and advice from the Governement about whether aspirin should be recommended more widely.
Until this is the case, taking aspirin should still be a decision you take in consultation with your doctor.
Jess
Cancer Research UK Chief Medical Officer, Professor Peter Johnson:
Search for 'Peter Rothwell' on this blog for more trials results linking aspirin to cancer reduction.
Further research by Peter Rothwell - digging around in "old archives in dusty basements" indicates:-
aspirin can reduce cancer growth or metastasis
aspirin works to prevent metastasis in the same way it reduces heart attacks and strokes. Aspirin works by platelet inhibition. There are far fewer platelets roaming the body assisting cancer to metastasis
aspirin might help in treatment of some cancers
stopping of aspirin after diagnosis of cancer could be detrimental
treat 10,000 cancer patients with aspirin for cost of one treated with Herceptin
Kashfi et al coupled oxynitroxy and aryl sulphur moieties to aspirin to give NOSH1 which had, compared to aspirin; improved inflammation properties, reduced gastrointestinal bleeding and increased aspirins potency to prevent and reduce colon and other cancers.
Fig.1: Chris Street, OU S827, March 2012
Fig.2: Chris Street, OU S827, March 2012
References:
CGS1) New Scientist, 10 March 2012 http://www.newscientist.com/article/dn21543-gasfilled-aspirin-is-a-potent-anticancer-drug.html (accessed 15th March 2012) CGS2) Kodela, R., Chattopadhyay, M., Kashfi, K.,
‘NOSH-Aspirin: A Novel Nitric Oxide-Hydrogen Sulfide-Releasing Hybrid: A New
Class of Anti-inflammatory Pharmaceuticals’, ACS Med. Chem. Lett., 2012,
3, pp. 257-262 CGS3) in press: Chattopadhyay, M., Kodela, R.,, Olson, K. R., Kashfi, K., 'NOSH–aspirin (NBS-1120), a novel nitric oxide- and hydrogen sulfide-releasing hybrid is a potent inhibitor of colon cancer cell growth in vitro and in a xenograft mouse model', Biochem. Biophys. Res. Commun., 2012, doi:10.1016/j.bbrc.2012.02.051
