Louisa Nicola explores the crucial role of vitamin D in brain health, discussing its impact on memory, mood, sleep quality, and cognitive function. Highlighting recent studies, she explains how vitamin D deficiency can lead to mood disorders, impaired sleep, and cognitive decline. With insights into how vitamin D acts like a hormone, Nicola emphasizes its significance in neurotransmitter production and inflammation control. She also shares personal experiences and offers guidance on maintaini...