Your hair is a reliable window into your nutritional status. The hair follicle is one of the most metabolically active structures in the body — it requires a continuous supply of energy, protein, and micronutrients to produce the 0.35mm of growth per day that healthy hair achieves. When nutrition is poor, the body deprioritises follicle function in favour of vital organs, making hair one of the first places deficiency shows.
Protein: The Non-Negotiable
Hair is approximately 91% keratin — a protein. Every strand requires amino acid building blocks delivered via the bloodstream to the follicle. Insufficient protein intake is one of the most common dietary causes of hair loss and slowed growth. Crucially, the effect is delayed by two to three months — the time for protein-deprived follicles to produce visibly thinner hair — which is why crash diets reliably cause hair loss several months after the restriction, not during it. Adequate protein across meals (eggs, fish, poultry, legumes, dairy) is the foundation.
Iron: The Most Common Nutritional Cause of Hair Loss in Women
Iron deficiency is the most frequently identified nutritional cause of hair loss in premenopausal women, affecting an estimated 10–15% in the UK. Research suggests hair growth is impaired when serum ferritin falls below 40 ng/mL — even when blood counts remain technically normal and full anaemia hasn't developed. Many women are told their iron is "fine" based on haemoglobin alone, when their ferritin is actually depleted.
Request ferritin specifically if you're experiencing unexplained hair thinning. If below 40–70 ng/mL, address it through iron-rich foods (red meat, sardines, lentils, pumpkin seeds) combined with vitamin C to improve absorption, and consider supplementation after discussion with your GP.
Zinc and Selenium
Zinc is required for follicle cell function and keratin synthesis. Deficiency causes hair loss and texture changes. It's particularly at risk in people avoiding animal products, since plant zinc is less bioavailable. Selenium supports thyroid function (thyroid hormone directly regulates hair growth rate) and protects follicle cells from oxidative damage. Two Brazil nuts daily meets selenium needs reliably.
Vitamin D and Biotin
Vitamin D receptors are found in hair follicles and are involved in growth cycling. UK deficiency is common, and low vitamin D is associated with alopecia areata and general thinning. Testing is worthwhile if you're experiencing unexplained hair loss. Biotin, despite being heavily marketed for hair, is unlikely to help unless you're genuinely deficient — which is rare in people eating varied diets. Don't spend money on biotin supplements unless deficiency has been confirmed.
Eat for Better Skin at Vanda's Kitchen
The dietary principles that support hair health and nutrition described above are most practically implemented through consistent daily food choices. Vanda's Kitchen's Filipino-inspired menu is built around exactly the ingredients that skin health research supports: fresh vegetables rich in antioxidants and vitamin C, lean proteins that support collagen synthesis, and naturally anti-inflammatory preparations that reduce the systemic inflammation underlying many skin conditions.
For City workers who want to support their skin health through their daily diet, Vanda's Kitchen's freshly prepared lunch — certified halal, 100% nut-free, delivered to your EC4 office — provides a genuine nutritional improvement over the processed alternatives that dominate the London lunch scene. Read our healthy office lunch delivery guide and order for your team.
For related reading, see foods for glowing skin and vitamin C benefits and food sources. WhatsApp us or get in touch.
Fresh, Nutritious Food at Vanda's Kitchen
Vanda's Kitchen near St Paul's Cathedral EC4 provides one of the most nutritionally complete and allergen-safe food options in the City of London. Our Filipino-inspired menu is built around lean proteins, fresh vegetables, and complex carbohydrates — the nutritional combination that supports sustained energy, cognitive performance, and the various health outcomes covered in this article. Our food is certified halal, prepared in a 100% nut-free kitchen, and fully allergen-labelled, making it appropriate for the broadest range of dietary requirements in London's diverse workforce.
For City professionals who want genuinely nutritious daily lunches without leaving the office, our Freedom Tray delivery service provides fresh, labelled food to your desk from our EC4 kitchen. Our Selfridges Food Hall presence confirms the quality standard we maintain. To order for your team or to discuss corporate delivery, view our team lunch options, WhatsApp us, or send an enquiry. Read our healthy office lunch delivery guide for more on what we offer.
Why London Professionals Choose Vanda's Kitchen
Whether you are managing dietary requirements for a team, looking for a nutritious daily lunch, or sourcing catering for a corporate event, Vanda's Kitchen near St Paul's Cathedral EC4 provides a consistent answer. Our kitchen is 100% nut-free as a permanent standard — no exceptions, no special requests needed. We are independently certified halal through the Halal Friendly List. We hold a 5-star food hygiene rating and our products are stocked in Selfridges Food Hall.
Our food is freshly prepared daily from our EC4 kitchen, rooted in Filipino culinary tradition and designed to deliver both nutritional quality and genuine flavour. For corporate lunch delivery, team catering, and event food across London, we offer a complete solution with the allergen credentials, dietary certifications, and food quality that London's most demanding clients require. View our team lunch options, WhatsApp us, or send an enquiry — we respond the same day.