Antioxidants are one of the most marketed nutritional concepts and one of the most misunderstood. The word appears on packaging, in supplement advertising, and in health journalism in ways that imply antioxidants are uniformly beneficial and that more is always better. The reality is more nuanced: antioxidants perform important functions in the body, the evidence for their role in disease prevention comes primarily from dietary patterns rather than supplements, and high-dose antioxidant supplementation can sometimes be harmful.
What Antioxidants Do
Antioxidants neutralise free radicals — unstable molecules produced as by-products of normal metabolism (cellular energy production, immune function) and from external sources (UV radiation, pollution, cigarette smoke). Free radicals can damage DNA, proteins, and cell membranes through oxidation — a process implicated in ageing, cardiovascular disease, neurodegeneration, and cancer development. Antioxidants donate electrons to free radicals, stabilising them before they cause damage.
The body produces its own antioxidant enzymes (superoxide dismutase, catalase, glutathione peroxidase) and uses dietary antioxidants to supplement this defence system. Key dietary antioxidants include vitamins C and E, beta-carotene (a carotenoid), selenium, zinc, and the thousands of plant polyphenols discussed in our phytonutrients guide.
Diet vs Supplements: The Critical Distinction
The strongest evidence for antioxidants and health comes from observational studies of dietary patterns high in antioxidant-rich foods. People who eat more fruits, vegetables, whole grains, and nuts consistently show lower rates of cardiovascular disease, cancer, and neurodegenerative disease. However, when specific antioxidants have been extracted and studied as supplements in clinical trials, the results have frequently been neutral or sometimes harmful — high-dose beta-carotene supplements increased lung cancer risk in smokers; high-dose vitamin E supplements showed no cardiovascular benefit and possible harm.
The explanation is likely that antioxidants in food work synergistically — the thousands of compounds in a vegetable interact in ways that a single extracted supplement cannot replicate. The matrix of whole food matters, not just its individual components.
Best Dietary Antioxidant Sources
Vitamin C: citrus, kiwi, berries, peppers, broccoli. Vitamin E: nuts, seeds, vegetable oils, avocado. Beta-carotene and carotenoids: orange, yellow, and dark green vegetables. Polyphenols: berries, dark chocolate, coffee, tea, red wine, olive oil, colourful vegetables. Selenium: Brazil nuts (the most concentrated source), fish, meat. The practical message: eat a wide variety of colourful plant foods rather than taking antioxidant supplements.
Eat Well at Vanda's Kitchen
Understanding nutrition is the first step — applying it daily is where Vanda's Kitchen comes in. Our freshly prepared Filipino-inspired food is built around the nutritional principles covered in this article: lean proteins for muscle and satiety, complex carbohydrates for sustained energy, and fresh vegetables for the micronutrients and antioxidants that support every body system. Every item is prepared daily in our EC4 kitchen near St Paul's Cathedral, certified halal, 100% nut-free, and fully allergen-labelled.
For City of London professionals who want consistently nutritious daily lunches without the planning burden, our office delivery service provides fresh, balanced food to your desk. View our team lunch options, WhatsApp us, or send an enquiry. Read our healthy office lunch delivery guide for more.
Put Nutrition Into Practice at Vanda's Kitchen
Knowing the nutritional principles above is one thing — eating well every working day is another. Vanda's Kitchen near St Paul's Cathedral EC4 makes the practical application straightforward. Our freshly prepared Filipino-inspired menu is built around lean proteins, complex carbohydrates, and fresh vegetables — the nutritional combination that supports sustained energy, cognitive performance, and the specific health outcomes covered in this article.
Every item we produce is certified halal (independently verified by the Halal Friendly List), prepared in a 100% nut-free kitchen, and fully allergen-labelled in compliance with Natasha's Law. Our food is stocked in Selfridges Food Hall — confirmation of the quality standard we maintain. For City of London professionals wanting consistently nutritious daily lunches delivered to the office, our team lunch service removes the daily decision without compromising nutritional quality.
To order for your team or enquire about daily delivery: view our team lunch options, WhatsApp us, or send an enquiry. For more on our healthy lunch offer, read our healthy office lunch delivery guide.
Why London Professionals Choose Vanda Kitchen
Vanda Kitchen near St Paul Cathedral EC4 provides City professionals with genuinely nutritious daily lunches that apply the principles covered in this article. Freshly prepared Filipino-inspired food, built around lean proteins, complex carbohydrates, and fresh vegetables. Certified halal (Halal Friendly List). 100 percent nut-free kitchen. 5-star hygiene rating. Full Natasha Law allergen labelling. Selfridges Food Hall quality. For a working lunch that actually supports your afternoon performance, WhatsApp us, send an enquiry, or view our team lunch options.