How much vitamin E do rats need to stay healthy?
Effect of Dietary Polyunsaturated/Saturated Fatty Acid Ratio and Dietary Vitamin E on Lipid Peroxidation in the Rat
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Increasing polyunsaturated fat intake up to a P/S ratio of 2.30 did not raise lipid peroxidation if vitamin E was adequate.
Common belief is that more polyunsaturated fats = more oxidation. This study shows that with enough vitamin E, even very high PUFA diets don’t increase damage.
Practical Takeaways
If you consume a lot of seed oils (soy, corn, sunflower), ensure your diet includes at least 40 IU of vitamin E per kg of food—equivalent to ~200 IU for a 150lb person, though human needs may differ.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Increasing polyunsaturated fat intake up to a P/S ratio of 2.30 did not raise lipid peroxidation if vitamin E was adequate.
Common belief is that more polyunsaturated fats = more oxidation. This study shows that with enough vitamin E, even very high PUFA diets don’t increase damage.
Practical Takeaways
If you consume a lot of seed oils (soy, corn, sunflower), ensure your diet includes at least 40 IU of vitamin E per kg of food—equivalent to ~200 IU for a 150lb person, though human needs may differ.
Publication
Journal
The Journal of Nutrition
Year
1985
Authors
Kent W. Buckingham
Related Content
Claims (6)
Incorporation of dietary polyunsaturated fatty acids from seed oils into cell membranes increases lipid peroxidation, triggering chronic low-grade systemic inflammation.
Giving rats 40 IU of vitamin E per kg of food stopped almost all fat damage — giving them even more (100 IU) didn’t help any further.
When rats didn't get any vitamin E in their food, their bodies showed more signs of fat damage, no matter what kind of fats they ate.
Even when rats ate a lot more of the kind of fat that's more likely to go bad (polyunsaturated), their fat damage didn't go up as long as they got enough vitamin E.
When rats ate diets with different types of fats, giving them a specific amount of vitamin E (40 or 100 IU per kg of food) greatly lowered signs of fat damage in their bodies, and that amount was enough to stop most of the damage.