José Antonio R. Piedrabuena -- Preventing cancer with physical activity

The patient information portal Cancer.net (from the American Society for Medical Oncology) states that physical activity is associated with a lower risk of developing, among other things, a tumour of the colon and breast.

To this end, it recommends reducing the time spent on electronic devices in order to participate in sports and physical activities. Limit the use of computer and other electronic devices.

The Karolinska Institute (Sweden) and the University of Melbourne (Australia) examined the outcomes of more than 750,000 people who were followed for more than 10 years,

The researchers, who have published their work in the Journal of Clinical Oncologyfocused on 15 types of cancer and found that, in seven of themthe reduction of risk associated with exercise was particularly important (decreases of up to 27%). The best results were obtained for the tumours of colon (decrease of between 8% and 14%), mum (6% to 10%), endometrium (10%-18%), kidney (11%-17%), myeloma (14%-19%), liver (18%-27%) and non-Hodgkin's lymphoma (11%-18%).

Scientists found that higher levels of activity were associated with a lower risk of breast, colon, endometrial, oesophageal, oesophageal and head and neck cancers. Conversely, more activity did not translate into a lower risk of kidney, gastric and liver cancer.

This work shows that the dose-response relationship is only evident in a few types of cancer while in others, such as the kidney or liverExercising more than the recommended minimum does not achieve greater protection. There are other factors such as excessive consumption of painkillers, stress, etc.

Miguel Ángel Seguíof the working group of exercise and cancer of the Spanish Society of Medical Oncology (SEOM), confirms the variety of mechanisms underlying the relationship between cancer and physical activity, but attaches particular relevance to the impact of obesity and, precisely, "it is the tumours most closely linked to obesity (endometrium, breast, colon, etc.) that show the greatest reduction in risk". When we exercise for an hour, we run out of glycogen and the muscle draws on fat reserves. Obesity is caused by deficient or limited intestinal flora, which, by the way, even improves with exercise.

In the liverexercise has a direct effect on glucose, the glycogen that will be consumed in the first few minutes and lipid metabolism and may decrease the risk or reverse liver disease. non-alcoholic fattyan emerging risk factor for liver cancer.

Alejandro Luciaresearcher at the European Universityagrees with Seguí that the benefit of physical activity on cancer is due to the fact that different reasons. "Exercise makes the body stronger. immune system against cancer. The cells that respond best to exercise are the '....natural killer'. (a type of lymphocyte), which under the effects of physical activity target and infiltrate tumours". At the same time, during exercise, and as I have described in other writings here, "muscles release into the bloodstream myokinessubstances that have a certain anti-tumour effect".

But the benefits of physical activity do not manifest themselves immediatelybut they do so after a few hourswhen these myokines have been released and the myokine is also regulated. adrenalinewhich has an anti-tumour effect on breast cancer. And I don't think that even if you exercise three days you can't achieve all this, you should do it every day and if possible twice a day.

Particularly important is the anti-inflammatory effect from exercise, derived from myokines produced by the stimulated muscles, and best with moderate strength exercise. Many types of tumours - and other chronic diseases, such as arthritis and obesity - are caused by a state of chronic systemic inflammationAnd along these lines, exercise is one of the main anti-inflammatories that exist. We have olive oil and spices that act as such.

Walking at a good pace, leaving aside the lift or escalatorThese are simple recommendations to move more after having done sport and to have as a task the work of cleaning our mind of so much rubbish that enters us from all sides, occupying the mind with criteria of mental hygiene and thus keeping away the risk of cancer.

A SHORT NOTE ON INCOMING VACCINES

All three vaccines have been tested in large clinical trials and have shown promise in preventing disease symptoms.

But none have been shown to prevent infection completely or reduce the spread of disease in a population without individual complementary measures.

This leaves open the possibility that those who are vaccinated may still be susceptible to asymptomatic infection and may transmit that infection to others who remain vulnerable. "In the worst case scenario, you have people walking around feeling fine, but spreading viruses everywhere," according to the virologist. Stephen Griffin of the University of Leeds (UK).

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