米糠油的確含過多的omega 6，而且市面很多米糠油是高度processed 過的，即是經高溫化學處理又再除臭： Processing of Rice Bran Oil (RBO) RBO in nature form when extracted is not readily useable for cooking due to some waxes and free fatty acids that tend to burn and smoke when heated. Thus oil has to be refined to make it acceptable for daily cooking purposes. It needs to be a careful processed without use of chemicals to retained its valuable nutrients, including Oryzanol, even while the unwanted materials are removed from it. Crude rice bran oil >>> Pelletization >>> Solvent treatment >>> Crude rice bran oil + Defatted bran >>> Dewaxing >>> Degumming >>> Alkali treatment >>> Refined oil + Soap stock >>> Bleaching and deodorisation >>> Chemically refined rice bran oil
Precautions to Take with Rice Bran Oil: Various toxicological studies found that when used in moderation, rice bran oil might be a safe alternative to edible oil. However, the following precautions must be considered: You should not use crude rice bran oil as it may contain heavy metals and pesticide residues. If you have stomach ailments, limit the intake of rice bran oil, as it may cause discomfort.1 Calcium-deficient patients must avoid using rice bran oil, as it might further lower blood calcium levels. More research is needed to suggest the safe use of rice bran oil for pregnant and breastfeeding women. Therefore, they should consult a doctor prior to starting its use. Take extra precautions while using it for children and older adults.
Side Effects of Rice Bran Oil: Increasing the amount of rice bran oil in a diet may cause certain side effects.1 The side effects of rice bran oil may include: Flatulence, gas, and stomach discomfort. It contains omega-6-fatty acids and might increase cancer risk when consumed in high amounts. It may have heavy metals like arsenic; whose prolonged exposure may be dangerous to health. It may lower blood calcium levels causing calcium deficiency.1,2 Therefore, you should not use rice bran oil to self-medicate on your own. It is essential to take a doctor’s advice and have it only if recommended.
