What’s the Big Deal About Antioxidants? (Honest Science)
"Antioxidant" is one of the most overused words in the wellness industry. It's slapped on everything from green tea to face creams to dog food. But strip away the marketing and there's a real, important biological story. Here's what antioxidants actually do — and what they don't.
What Antioxidants Actually Do
Your body generates free radicals as a byproduct of metabolism — unstable molecules with unpaired electrons that can damage cells. This damage (oxidative stress) is linked to aging, inflammation, and chronic disease.
Antioxidants neutralise free radicals by donating an electron without becoming unstable themselves. They're essentially the body's clean-up crew.
The body produces its own antioxidants (glutathione, superoxide dismutase). Dietary antioxidants supplement this internal system.
The Best Food Sources
Should You Take Antioxidant Supplements?
Most people: no. Here's why:
- Whole foods provide a complex matrix of antioxidants plus fibre, vitamins, minerals — supplements isolate one compound
- Some high-dose antioxidant supplements (beta-carotene, vitamin E) have shown increased mortality risk in trials
- Your body actually needs some oxidative stress — it's how exercise builds you stronger
- The marketing massively oversells the benefits
The exceptions worth considering
- Vitamin C (500mg) — if your diet is low in citrus/berries
- NAC (N-acetylcysteine) — boosts glutathione, the body's master antioxidant
- Curcumin — see my turmeric guide for proper dosing
Where CBD Fits
CBD itself has measurable antioxidant activity — a 2020 review in Antioxidants journal documented its free-radical scavenging effects. The mechanism is similar to vitamin C and E.
This doesn't mean you should take CBD specifically as an antioxidant — there are cheaper options. But it does mean CBD layers nicely onto an antioxidant-rich diet.
The Practical Strategy
- Eat 5+ servings of colourful plants daily. Different colours = different antioxidants.
- Add berries to one meal. Easiest single habit.
- Drink 2-3 cups of green tea instead of one of your coffees.
- Use spices generously. Turmeric, cinnamon, oregano cost pence and pack punch.
- Skip the expensive antioxidant supplement. You're paying for marketing.
Antioxidants are real and important. Antioxidant supplements are mostly marketing hype. Eat colourful plants, drink green tea, use spices, and skip the expensive pills. Your body's own antioxidant systems are more powerful than anything you can buy — your job is to give them the raw materials they need. Food first. Always.