Antioxidants Diet and Lifestyle
Dietary antioxidants
- Supplemental vitamin E and/or selenium no effect at low doses
- Lots of other supplements in diet, including vitamin C, zinc, co-enzyme Q10, alpha -lipoic acid, flavonoids in various fruits and vegetables
- Need to be replenished
- [Mandelker, JAHVMA , 41:22-24, Winter 2016]
Exercise and antioxidant activity
- Increased respiration rate increases level of natural antioxidant defenses
- Over exercising (prolonged oxidative stress) can lead to inflammation
and disease
Fish Oils – Antioxidant or Anti-Inflammatory ?
Omega-3 Fatty Acids
- Found in fish, flax and some other plants
- Popular nutraceutical
- Long thought to act just as oxygen radical scavengers
Fish vs Meat Diets: Japanese Americans
- Japanese who eat a western diet have higher CVD and colon cancer
- Long thought to involve unsaturated fatty acids in meat
- Arachidonic acid is substrate for COX-1 and COX-2
- Association of COX with CVD and cancer
- But maybe due to less fish in the diet
- DHA (omega-3 fatty acid) is converted by COX-2 to Neuroprotectin
- Helps reduce stroke damage; may have other benefits
- DHA actually better substrate for COX-2 than AA
- Just beginning to be understood
- DHA (omega-3 fatty acid) is converted by COX-2 to Neuroprotectin
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