А, я нашел фразу, которая тебя заинтриговала. По-моему, это последствия чьего-то некачественного перевода. Гугль подсказывает мне, что в вопросе о вреде и пользе линолевой кислоты (linoleic acid) нет согласия.
1.
http://www.second-opinions.co.uk/sunlight.htmlIn the 1970s, when kidney transplantation was pioneered, doctors first encountered the problem of tissue rejection. To combat it, they gave their transplant patients
linoleic acid. This suppressed their immune systems very effectively, preventing their transplanted kidneys being rejected. But it also
caused a large increase in cancers and this treatment was stopped.
Since then, linoleic acid and oils that contain it, have been shown time and again to increase the risk of several types of cancer, including skin cancers.
Polyunsaturated margarines are around 40% linoleic acid
Sunflower, safflower, corn and soya oils are all more than 50% linoleic acid.
http://www.second-opinions.co.uk/cholesterol_myth_2.html#PUFThe oils then go through more than ten other processes: degumming, bleaching, hydrogenation, neutralization, fractionation, deodorisation, emulsification, interesterification, . . . that include heat treatment at 140 o -160 o with a solution of caustic soda; the use of nickel, a metal that is known to cause cancer, as a catalyst, with up to fifty parts per million of the nickel left in the product; the addition of antioxidants such as butylated hydroxyanisol (E320). These antioxidants are again usually petroleum based and are widely believed to cause cancer.
Тут говорят, что и линолевая кислота канцерогенная, и, вдобавок, другие канцерогены используются при производстве маргарина (никель, антиоксиданты).
2.
http://www.nutrition.org/cgi/content/full/131/5/1548Animal data have suggested that consumption of a diet containing as little as 0.1 g CLA/100 g dry diet is sufficient to significantly reduce tumors (Ip et al. 1994 ) and may be useful as a reference for dietary intake recommendations in humans. Recently, Ip et al. (1999) demonstrated that RA is the biologically active anticarcinogenic CLA isomer. Noteworthy is the fact that this suggestion is based on an animal model that involves the administration of massive doses of a chemical carcinogen. Because humans are typically exposed to much lower concentrations of carcinogens, the effective RA dose for human cancer protection is likely to be less than what animal models suggest. Nonetheless, when calculated on a dry weight basis, both men and women in our study consumed diets containing approximately 0.03 g/100 g RA. Further, our data suggest that RA intake must be 620 and 441 mg/d for men and women, respectively, to exhibit a cancer protective effect (i.e., 0.1 g/100 g diet). Due to the lack of experimental human data, extrapolation from animals to humans provides the only means of dietary intake estimates. However, these represent very rough estimates and should be interpreted cautiously.
Тут говорят, что введение производного линолевой кислоты (CLA) в 1994 г. подопытным ж-ным, которым перед тем давали огромную дозу некоторого химического канцерогена, ж-ным этим помогало. Но что экстраполировать выводы с ж-ных на людей и обобщать надо осторожно.
3.
http://www.diet-pills.gb.com/cla.htmCLA Diet Pills
Conjulated Linoleic Acid (CLA) is a thermogenic agent that is found in meat, dairy products (especially cheeses), sunflower oil and safflower oil.
It is said to assist in reducing body fat.
CLA Side Effects: As CLA was only made available in 1996 as a dietary supplement, the possible side effects of it are little known. Possible gastro problems were experienced by some users in early studies.
Тут тебе хотят продать таблетки для похудения с этой самой CLA, и предупреждают, что так как эта штука токо продается с 1996 г. (быстро рынок среагировал на результат 1994-го года), то побочные эффекты мало изучены. С желудком м.б. проблемы.
4.
http://www.sunflowernsa.com/health/default.asp?contentID=45 Тут ассоциация производителей подсолнечного масла рассказывает тебе, как линолевая кислота - это необходимая (essential) жирная кислота, и как это вкусно. И как подсолнечное масло применяется также и в промышленности.