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Cancer
Fish Oils: Further Research On Benefits For Cancer Sufferers
Date: 08/10/07
Safe to say, just about every adult has witnessed the toll that cancer and cancer treatments can take on the human body. But with the right nutrition, many patients might alleviate the muscle wasting and lack of energy that often accompanies a fight with cancer.
The Greeks have two words for it
The word cachexia is derived from two Greek words kakos and hexis combined to mean 'bad condition.' It's not very descriptive, but all too true.
Cachexia is characterized by a loss of vitality, poor appetite, weight loss, decomposition of muscle and depression. This condition is common in patients with advanced cancer, but may also be experienced with other chronic diseases such as AIDS.
In a past e-Alert I mentioned a 2003 study that tested nutritional therapy on 200 patients with cachexia (Cachexia Treatment: How Fish Oil Can Reduce Symptoms). Researchers found that a daily high-calorie/high-protein supplement, enriched with vitamins C and E, and about 2 grams of omega-3 fatty acids, prompted a significantly higher rate of weight gain, increased lean body mass and improved quality of life compared to subjects who received a similar supplement, but without the added vitamins and omega-3 fatty acids.
In an interview with Reuters Health, University of Iowa (UI) researcher, Dr Patrick Burns, explained that tumours prompt the production of inflammatory compounds that contribute to the development of cachexia. Omega 3 fatty acids inhibit inflammatory compounds while also slowing fat metabolism and protein degradation, two other factors that may play a role in cachexia.
Upping the dosage
In another study led by Dr. Burns, his UI team recruited 43 cancer patients with moderate to severe malnutrition. Each subject had experienced at least two percent loss of total body weight in the month preceding the trial.
All of the subjects received concentrated, high doses of omega-3 fatty acids in fish oil supplements. Dose was assigned according to body weight. For instance, a subject who weighed 150 pounds received 7.5 grams of fish oil each day for a little over one month.
Several subjects dropped out of the study due to side effects, which included diarrhoea, nausea and vomiting. But among the 36 remaining subjects, 24 stabilized their weight and six either achieved their normal body weight or gained more than five percent of their pre-study weight. Reporting the results in the journal Cancer, researchers added: 'Quality-of-life scores were superior for patients who gained weight.'
Six patients lost more than five percent of their body weight, so the intervention wasn't successful across the board. But the UI team noted that more positive outcomes might be seen in patients whose illness is not so severe and who can continue taking the supplements for more than a month.
Cancer patients should talk to their doctors before supplementing with fish oil.
Back to topThe Greeks have two words for it
The word cachexia is derived from two Greek words kakos and hexis combined to mean 'bad condition.' It's not very descriptive, but all too true.
Cachexia is characterized by a loss of vitality, poor appetite, weight loss, decomposition of muscle and depression. This condition is common in patients with advanced cancer, but may also be experienced with other chronic diseases such as AIDS.
In a past e-Alert I mentioned a 2003 study that tested nutritional therapy on 200 patients with cachexia (Cachexia Treatment: How Fish Oil Can Reduce Symptoms). Researchers found that a daily high-calorie/high-protein supplement, enriched with vitamins C and E, and about 2 grams of omega-3 fatty acids, prompted a significantly higher rate of weight gain, increased lean body mass and improved quality of life compared to subjects who received a similar supplement, but without the added vitamins and omega-3 fatty acids.
In an interview with Reuters Health, University of Iowa (UI) researcher, Dr Patrick Burns, explained that tumours prompt the production of inflammatory compounds that contribute to the development of cachexia. Omega 3 fatty acids inhibit inflammatory compounds while also slowing fat metabolism and protein degradation, two other factors that may play a role in cachexia.
Upping the dosage
In another study led by Dr. Burns, his UI team recruited 43 cancer patients with moderate to severe malnutrition. Each subject had experienced at least two percent loss of total body weight in the month preceding the trial.
All of the subjects received concentrated, high doses of omega-3 fatty acids in fish oil supplements. Dose was assigned according to body weight. For instance, a subject who weighed 150 pounds received 7.5 grams of fish oil each day for a little over one month.
Several subjects dropped out of the study due to side effects, which included diarrhoea, nausea and vomiting. But among the 36 remaining subjects, 24 stabilized their weight and six either achieved their normal body weight or gained more than five percent of their pre-study weight. Reporting the results in the journal Cancer, researchers added: 'Quality-of-life scores were superior for patients who gained weight.'
Six patients lost more than five percent of their body weight, so the intervention wasn't successful across the board. But the UI team noted that more positive outcomes might be seen in patients whose illness is not so severe and who can continue taking the supplements for more than a month.
Cancer patients should talk to their doctors before supplementing with fish oil.
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