Antioxidants
Compounds that neutralize free radicals and support the body's cellular defense systems
Antioxidants are compounds that neutralize free radicals — unstable molecules that can damage cellular components including DNA, proteins, and cell membranes. The body produces its own antioxidants (enzymatic antioxidants) and also relies on dietary antioxidants from food and supplements.
Antioxidants are included in DOG-1 to support the body's cellular defense against oxidative stress — a condition that increases with age and contributes to cellular aging and inflammation. Functional mushrooms and botanical ingredients in DOG-1 provide a range of antioxidant compounds.
Antioxidants work by donating electrons to free radicals, neutralizing them before they can damage cellular components. Different antioxidants work in different cellular compartments and against different types of free radicals. Some antioxidants also support the body's own enzymatic antioxidant systems.
- ✓Cellular Defense
- ✓Healthy Aging
- ✓Immune Function
- ✓Cognitive Health
Types of Antioxidants
Antioxidants can be broadly categorized as enzymatic (produced by the body) and non-enzymatic (obtained from diet). Enzymatic antioxidants include superoxide dismutase (SOD), catalase, and glutathione peroxidase — these are the body's primary defense against free radicals. Non-enzymatic antioxidants include vitamins C and E, carotenoids (beta-carotene, lycopene), polyphenols (flavonoids, resveratrol), and unique compounds like ergothioneine found in mushrooms.
A diverse intake of antioxidant compounds is generally considered more effective than high doses of a single antioxidant, because different antioxidants work in different cellular compartments and against different types of free radicals.
Ergothioneine: A Unique Mushroom Antioxidant
Ergothioneine is a unique antioxidant amino acid found in high concentrations in mushrooms and in smaller amounts in certain other foods. Unlike most antioxidants, ergothioneine has a dedicated transporter protein (OCTN1) that actively concentrates it in tissues with high metabolic activity and oxidative stress — including the liver, kidneys, bone marrow, and brain.
This targeted accumulation has led to interest in ergothioneine as a cellular protectant, and it has been called the 'longevity vitamin' in some human nutrition research. While canine-specific research on ergothioneine is limited, its presence in the functional mushrooms used in DOG-1 contributes to the antioxidant profile of the formula.
Antioxidants and Cognitive Health in Dogs
The brain is particularly vulnerable to oxidative stress due to its high metabolic rate and relatively limited antioxidant defenses. Research by Cotman and colleagues at the University of California found that antioxidant-enriched diets were associated with improved cognitive performance in aging dogs, including better performance on learning tasks and reduced cognitive dysfunction. This research supports the role of antioxidant supplementation in supporting brain health in aging dogs.
DOG-1 provides antioxidant support through its functional mushroom blend (Turkey Tail, Reishi, Shiitake) and botanical ingredients. These provide a range of antioxidant compounds including ergothioneine, polyphenols, and beta-glucans that support the body's cellular defense systems.
Scientific References
- Cotman CW, Head E, Muggenburg BA, Zicker S, Milgram NW. Brain aging in the canine: a diet enriched in antioxidants reduces cognitive dysfunction. Neurobiol Aging. 2002;23(5):809-18. PMID: 12392789
- Halliwell B. Free radicals and antioxidants: updating a personal view. Nutr Rev. 2012;70(5):257-65. PMID: 22537044
- Finkel T, Holbrook NJ. Oxidants, oxidative stress and the biology of ageing. Nature. 2000;408(6809):239-47. PMID: 11089981