Saskia Reeves-Priestley collapses at work due to low vitamin D levels

Saskia Reeves‑Priestley collapsed at her office in Manchester on Tuesday, prompting emergency services to rush her to hospital where doctors discovered her blood vitamin D level was dangerously low, well below the 30 nanograms per millilitre threshold considered sufficient.

Vitamin D deficiency is a silent health problem that affects an estimated one in four adults in the UK, according to Public Health England. The nutrient is produced when skin is exposed to sunlight, so winter months, cloudy weather and indoor jobs increase risk. Low levels are linked to weakened bones, muscle pain, chronic fatigue and mood disorders. Health experts warn that many people mistake the symptoms for stress or aging, delaying diagnosis until a serious event, like a collapse, occurs.

Reeves‑Priestley reported weeks of unexplained tiredness, occasional muscle aches and difficulty concentrating before the incident. Blood tests revealed her vitamin D concentration was 12 nanograms per millilitre, a level that can impair muscle function and increase fall risk. Her GP prescribed a high‑dose supplement regimen and advised regular short walks in daylight when possible. The hospital’s endocrine team emphasized that supplementation is safe and effective when monitored, and they encouraged other patients with similar symptoms to request a test. The case has sparked renewed calls from the British Nutrition Foundation for routine vitamin D screening in high‑risk groups, such as shift workers and the elderly.

Reeves‑Priestley will begin a three‑month course of 2,000 IU daily vitamin D tablets, followed by a maintenance dose, and will have her levels rechecked after eight weeks. She hopes her story will alert others to the hidden danger of deficiency. Health officials say the incident underlines the need for public awareness campaigns, especially as the UK heads into another winter with limited sunlight. Early detection and simple lifestyle changes could prevent more sudden collapses and improve overall wellbeing.