Cancer diet

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Cancer diets are among the alternative medical treatments for cancer . On the basis of epidemiological findings, which suggest a preventive effect of the "healthy" diet against the development of cancer, oncologists often recommend a diet rich in vitamins and trace elements , low-fat and as varied as possible to people who are already ill .

The existing recommendations partly contradict each other. None of the diet forms mentioned has been proven to be effective by the standards of evidence-based medicine . On the contrary, a very one-sided diet, such as the macrobiotic or vegan diet, can lead to deficiency symptoms in both healthy and sick. Some forms of diet also have side effects (including severe weight loss ) that are dangerous in the case of cancer.

Recommendations of the WCRF

The WCRF (World Cancer Research Fund) has issued eight diet and behavior recommendations designed to minimize the risk of developing cancer. There are also two special recommendations for breastfeeding and for people with cancer. These are:

  • It is recommended to stay as slim as possible, within the normal body weight range.
  • Physical activity should be a part of daily life.
  • The consumption of energy-dense foods should be limited and sugary drinks should be avoided.
  • It is recommended to consume predominantly plant-based foods.
  • It is recommended that you limit your consumption of red meat and avoid consuming processed meat.
  • Limiting the consumption of alcoholic beverages is recommended.
  • Limiting salt consumption is recommended; the consumption of moldy grains or legumes should be avoided.
  • The nutritional requirements should only be met by food.
  • Breastfeeding: mothers should breastfeed; Infants should be breastfed.
  • Cancer sufferers: The recommendations for cancer prevention apply.

Examples of cancer diets

  • Anthroposophic diet according to Renzenbrink : whole foods, but without nightshade plants (tomatoes, potatoes). Developed by the German doctor Udo Renzenbrink (1913–1994)
  • Fasting after Breuß : For six weeks exclusively vegetable juices (beetroot, carrots, celery, potatoes, radish) and certain teas. Developed by the Austrian naturopath Rudolf Breuss (1899–1990)
  • Gerson's cancer diet : enemas with coffee, laxatives , liver extract, iodine , vitamin B12 , pepsin. Little protein, sugar, salt. Developed by the German (after 1936 American) doctor Max Gerson (1881-1959)
  • Food combining according to Hay : proteins and carbohydrates strictly separated. Developed by the American doctor Howard Hay (1866–1940)
  • Instinctive food after burger : No cooked or fried dishes, meat and fish may only be eaten raw. Developed by the Swiss Guy-Claude Burger (* 1934)
  • Isopathic lactic acid diet or protective diet according to Kuhl : clockwise lactic acid . Developed by the German doctor Johannes Kuhl
  • Cancer diet according to Leupold : extremely low-carbohydrate diet, infusions with sugar and insulin . No fruit except lemons. Developed around 1955 by the German doctor Ernst Leupold .
  • Macrobiotic food according to Kushi-Ohsawa : mainly grain products, green blanched leaves and 100% omission of all so-called "yinny foods". The Japanese Yukikazu Sakurazawa (1893–1966) practiced in New York under the name George Ohsawa ; Michio Kushi (1926–2014) was one of his students.
  • Moerman cancer diet : whole foods as well as iodine , citric acid , yeast , wheat, sulfur and vitamins. Developed around 1950 by the Dutch doctor Cornelis Moerman
  • Oil-protein diet according to Budwig : linseed and nut oil, sauerkraut juice, vegetable and fruit juices, supplemented by a ban on "white" sugar , certain fats, canned foods and confectionery. Developed by the German biochemist Johanna Budwig (1908–2003)
  • Cancer diet according to Kousmine : grain and raw vegetables, no meat. Developed by the Swiss doctor Catherine Kousmine (1904–1992)
  • Whole foods according to Bircher-Benner : Little fat, lots of vegetables and grains, dairy products, fruit, fish instead of meat. Developed by the Zurich doctor Maximilian Bircher-Benner (1867–1936)
  • Ketogenic diet : A low or carbohydrate-free diet (“Low Carb”, “No Carb”), mainly fat and protein.

See also : micronutrient (medicine)

literature

  • Hübner et al .: How useful are “cancer diets”? A critical analysis as a basis for medical advice. In: TumorDiagnostik undherapie , 2013; 34 (2): pp. 85-90. doi : 10.1055 / s-0032-1330748

Web links

Individual evidence

  1. ↑ Eating and drinking during cancer therapy. Press release of the German Nutrition Society , March 3, 2015.
  2. ↑ a b c Eating according to the instructions: can cancer be influenced by diet? Information page of the German Cancer Research Center , November 19, 2013.
  3. ↑ a b Jana Meixner: Ketogenic Diet: Let cancer starve? In: Medicine transparent . August 25, 2020, accessed on August 27, 2020 .
  4. ^ Diet, Physical Activity, and Cancer Prevention: A Global Perspective. Summary. World Cancer Research Fund, London 2007. pp. 10ff.