The UK's Hidden Vitamin D Crisis
Living in the UK means limited sunshine for much of the year, and this has created a widespread vitamin D deficiency crisis. Research shows that children with ADHD and autism are even more likely to be vitamin D deficient than the general population.
The Evidence
Multiple studies show lower vitamin D levels in children with ADHD and autism, with supplementation improving symptoms when combined with other nutrients like magnesium.
How Vitamin D Supports Brain Function
- Neurotrophic factor production: Essential for brain cell growth and development
- Inflammation reduction: Helps reduce neuroinflammation linked to ADHD
- Immune system regulation: Critical for proper immune function
- Neurotransmitter synthesis: Supports dopamine and serotonin production
UK Guidelines and ADHD Needs
Recommended Dosages
- Children 1-10 years: 400 IU daily (NHS recommendation)
- Children 11+ and adults: 400-1000 IU daily
- Therapeutic range: 1000-4000 IU daily (with monitoring)
- Upper safe limit: 4000 IU daily for adults
Why We Include Vitamin D3 in Calmmind
Given the high rates of vitamin D deficiency in the UK and the particular vulnerability of children with ADHD and autism, vitamin D3 is an essential component of our evidence-based formula.