Vitamin D deficiency has become a widespread issue even in sunny Spain, with symptoms that often develop gradually and can be mistaken for normal fatigue. This element, which essentially functions as a hormone in the body, is critically important for maintaining bone health, immune function, and emotional balance. Early detection of deficiency is the first step toward improving overall well-being.
Healthcare professionals highlight several key signs that may indicate a lack of the ‘sunshine vitamin.’ These include persistent fatigue and weakness that do not go away even after rest, as well as muscle and bone pain. If you find yourself getting colds and infections more frequently, this could also be a warning sign, as vitamin D plays an important role in regulating the immune system.
Other common symptoms include increased hair loss and noticeable mood swings. Low mood, irritability, or feelings of sadness without apparent cause may be linked to the fact that vitamin D is needed for the synthesis of serotonin, often called the ‘happiness hormone.’ In addition, vitamin D deficiency is associated with a higher risk of developing autoimmune disorders.
The long-term consequences of low vitamin D levels can be quite serious. They include weakened bone tissue, which increases the risk of fractures, muscle weakness, and chronic joint pain. There is also a higher predisposition to metabolic disorders such as diabetes and hypertension, certain types of cancer, and cognitive disorders.
A comprehensive approach is recommended for correcting a deficiency. This includes moderate but regular sun exposure, enriching the diet with foods high in vitamin D (such as fatty fish, egg yolks, and fortified dairy products), and, if necessary, taking dietary supplements. It is important to emphasize that supplements should only be prescribed and dosed under medical supervision after a blood test, as an accurate diagnosis can only be made on that basis.
Although it is rare, an excess of vitamin D is also dangerous to health. A condition known as hypervitaminosis D can lead to excessive accumulation of calcium in the blood (hypercalcemia) and cause side effects. This is why self-medication and uncontrolled intake of high doses of the vitamin are unacceptable and require professional medical supervision.
