When this deficiency accumulates, the body sends subtle warning signals. Everyday symptoms like back pain, low mood, or skin issues may hint at a deeper issue, and even conditions such as erectile dysfunction and chronic rhinitis have been linked to low vitamin D. This article outlines six key signs that may indicate a vitamin D deficiency.
Vitamin D blood tests are available at local public health centers.
Persistent, unexplained lower back pain may suggest a vitamin D deficiency. Vitamin D is essential for calcium absorption, supporting bone and muscle health. Low levels can trigger degenerative changes in the spinal bones and surrounding soft tissues, leading to discomfort. Frequent lower back pain warrants investigation beyond muscle strain or posture issues. Severe deficiency may contribute to rickets, osteomalacia, or increased cavity formation.
If your skin becomes persistently dry, itchy, or develops red patches, vitamin D deficiency could be a factor. Vitamin D supports skin cell growth, repair, and inflammation regulation. Insufficient levels weaken the skin’s barrier, making it more susceptible to irritants. Recent research underscores vitamin D’s role in skin immunity and inflammation control, noting that immune-related conditions like atopic dermatitis may worsen or heal more slowly when levels are low.
Depression and Lethargy
Vitamin D influences serotonin production, a neurotransmitter critical for mood regulation, stress relief, and emotional balance. Deficiency can disrupt serotonin synthesis, leading to feelings of lethargy or depression. Observational studies consistently show higher rates of depressive symptoms in individuals with low vitamin D levels, with long-term deficiency potentially increasing clinical depression risk.
Insomnia
Vitamin D plays a role in melatonin production, the hormone that regulates sleep cycles and promotes nighttime drowsiness. Low levels can impair melatonin synthesis, causing difficulty falling asleep, frequent nighttime awakenings, shallow sleep, or early morning waking. Persistent symptoms may indicate insomnia requiring medical attention.
Erectile Dysfunction
Vitamin D supports not only bone and immune health but also vascular function and hormone regulation. A study by Dr. Erin Michos at Johns Hopkins University found that men with low vitamin D levels have a 32% higher risk of erectile dysfunction compared to those with normal levels. Researchers suggest vitamin D enhances endothelial function and blood flow, critical for erectile health. While causation isn’t confirmed, men with erectile dysfunction may benefit from checking their vitamin D status.
Rhinitis
Chronic nasal congestion or runny nose shouldn’t always be attributed to allergies—vitamin D deficiency may contribute. Research from Incheon Hi Hospital, led by Professor Jeongho Lee, analyzed Korea National Health and Nutrition Examination Survey data and found significantly lower vitamin D levels in rhinitis patients. Middle-aged adults with deficiency faced up to a 21% higher risk of chronic rhinitis. Vitamin D helps balance immune responses and control inflammation, and low levels can weaken respiratory tract defenses, exacerbating symptoms. It also suppresses inflammatory cytokine production and moderates immune cell activity, aiding in respiratory inflammation relief.
medikorea team Haeun Oh
press@hinews.co.kr
