Vitamin C

Vitamin C deficiency can cause fatigue, irritability and low mood, and in scurvy, nerve and movement problems. What the evidence shows, and what else to rule out first. 

The best foods high in vitamin C, how much storage and cooking take
before you eat them, and why 41.8% of US adults still fall short. 

Older adults eat as much vitamin C as younger adults but carry less in their blood. What the research says about vitamin C for seniors and what to do.

Vitamin C for smokers: why requirements run 35mg higher, why deficiency is 3x more common, and what the evidence says about effective daily intake. 

Vitamin C deficiency symptoms usually start quietly, not with scurvy. See the blood thresholds, who is genuinely at risk, and why scurvy still appears.

Nearly half of US adults have insufficient vitamin C. Discover how liposomal vitamin C improves absorption, supports immunity, and why standard supplements often fall short.