Roger-Luc Chayer (Image: AI – Gay Globe)
The media frequently discuss the benefits of vitamin D, whether it is obtained through sun exposure or dietary supplements. Research on this topic is advancing rapidly, and recent findings suggest that this inexpensive and easily accessible vitamin could have protective effects against the ravages of Alzheimer’s disease. Even more surprising, it may also be beneficial in combating erectile dysfunction, a modern-day scourge.
What is Alzheimer’s Disease?
According to Health Canada: « Dementia is a general term for a set of symptoms that affect brain functions. It is a chronic condition that usually worsens over time. Symptoms include physical changes (e.g., loss of coordination, loss of bladder control, weak and stiff muscles, difficulty moving), memory decline, impaired planning, language, and judgment abilities, mood and behavioral changes. »
What is Erectile Dysfunction?
According to the Men’s Health Foundation in Canada: « Erectile dysfunction is the inability to achieve or maintain a firm erection for sexual intercourse. It is a generally treatable condition that becomes more common as men age. General sexual dysfunction may also encompass issues with ejaculation, anatomical abnormalities of the penis, and libido problems. Erectile dysfunction is associated with several risk factors including blood pressure, hormonal production, stress, and lifestyle. It may also be an early sign of other serious health issues such as heart disease or diabetes. »
How Does Vitamin D Protect Against Alzheimer’s Disease and Erectile Dysfunction?
Vitamin D helps protect against Alzheimer’s disease by playing a crucial role in brain health, including reducing inflammation, promoting cellular detoxification, and supporting cognitive functions. For erectile dysfunction, vitamin D contributes to improving blood circulation by supporting vascular health and regulating nitric oxide production, a molecule essential for proper erectile function.
Regarding erectile dysfunction, a study published by the National Institutes of Health in the United States suggests that many common mechanisms underlie both cardiovascular diseases (CVD) and erectile dysfunction (ED), and that vitamin D deficiency (VDD) is closely associated with both conditions. We hypothesize that optimizing serum vitamin D levels through sunlight exposure or vitamin D supplementation could help delay the onset of erectile dysfunction. Coupled with positive lifestyle changes, this optimization might restore normal sexual function in some men.
Dosage and Overconsumption
The daily recommended dose of vitamin D varies depending on factors such as age, sex, and health status. Generally, for adults, it ranges from 600 to 800 international units (IU), although some individuals may require higher doses, especially the elderly, pregnant women, or those with vitamin D deficiency. For children, the dosage varies by age, typically ranging from 400 to 1,000 IU. It is always best to consult a healthcare professional to determine the appropriate dosage based on individual needs.
Vitamin D supplementation is easily accessible worldwide without a prescription. However, it is important not to overuse it, as excessive consumption can lead to toxicity. Vitamin D toxicity, though rare, can manifest with various symptoms. It may cause nerve pain, tingling or numbness in the limbs, and balance issues. Digestive problems such as nausea or vomiting may also occur. In some cases, skin issues like redness or itching may be observed. Additionally, high toxicity can lead to neurological symptoms, such as mood or behavioral changes, and heart rhythm abnormalities.