Consumption of fresh, non-oxidized DHA, EPA or omega -3-rich perilla
oil increases markers of oxidative stress in rats.58 Rats fed 30 percent of their diet as corn
oil have double the rate of lipid peroxidation, half the aerobic capacity, and 42 percent lower glycogen stores in their heart tissue compared to rats fed an equal amount of
coconut oil.59 A randomized, double - blind, placebo - controlled trial likewise showed that six grams
per day of fish
oil increased lipid peroxides and MDA in healthy men, regardless of whether they were supplemented with 900 IU of vitamin E (see Figure 4).60