Vitamin D: Safe Use, Risks of Overdose, and Health Guidance

No time to read?
Get a summary

In England, a man who had taken vitamin D for several months died from heart and kidney failure. This was reported by Business Content. The case involved an 89-year-old former businessman who was admitted to hospital on May 10, 2023, with hypercalcemia, a condition defined by elevated calcium levels in the blood. He also had very high levels of vitamin D. Vitamin D helps the body absorb calcium, but when intake is excessive, calcium can accumulate in the body and cause serious health problems. The medication packaging carried no warnings about the specific risks or side effects of taking those supplements. The man survived ten days after admission before passing away. The official cause of death was heart and kidney failure associated with hypercalcemia and vitamin D poisoning.

Vitamin D plays a key role in maintaining healthy bones, teeth and muscles. It is found in oily fish, red meat and egg yolk, and the body also makes it when skin is exposed to sunlight. In the United Kingdom, the recommended daily intake of vitamin D for individuals aged 14 to 70 is 15 micrograms (600 international units). For people over 70, the recommended amount increases to 20 micrograms (800 IU) per day. Experts advise that people should monitor vitamin D intake through diet, supplements and sun exposure, especially when using fortified or high-dose products. Regular tests and medical guidance are essential for those at risk of elevated calcium or vitamin D levels, such as older adults, people with certain health conditions or those taking multiple supplements.

The case underscores the importance of clear labeling and consumer awareness regarding supplement use. Healthcare professionals emphasize that while vitamin D is essential for biomechanics, excessive consumption can disrupt calcium balance and place strain on the heart and kidneys. Consumers should consult healthcare providers before starting high-dose vitamin D supplements or combining different products that contain calcium or fat-soluble vitamins. Proper dosing, informed choices and awareness of potential interactions with medications are crucial for safeguarding health.

Public health bodies consistently remind the public that vitamin D, though beneficial, is not harmless in all circumstances. Risk factors for vitamin D toxicity include advanced age, certain medications and pre-existing health conditions that affect how calcium is processed. In Canada and the United States, guidance stresses that individuals should aim to meet daily requirements through a combination of food, sunlight exposure where appropriate and prudent supplementation if advised by a clinician. People who are pregnant, elderly or dealing with kidney or liver issues should seek medical advice to determine safe dosing. When introducing supplements, it is wise to start with a low dose and gradually adjust under supervision. This approach helps prevent hypercalcemia and protects heart and kidney function while supporting bone health and overall well-being.

The broader lesson is clear: supplements can help when used correctly but can cause harm if misused. Clear labeling, consumer education, and clinician oversight are essential to ensure vitamin D contributes to health without unintended consequences. In all cases, individuals should discuss supplement choices with a healthcare professional, particularly if they have existing health concerns, take other medications or have limited sun exposure. This careful approach helps preserve the body’s balance and avoids the kind of lasting damage seen in extreme cases where intake exceeded safe limits. The dialogue among healthcare providers, regulators and consumers continues to focus on safe, evidence-based use of vitamin D to support long-term health outcomes. (Public Health England, 2023; American Academy of Nutrition and Dietetics, 2024; Health Canada Vitamin D Guidelines, 2023).

No time to read?
Get a summary
Previous Article

Zagitova's Team Leadership and Career Highlights Highlight Channel One Cup Presence

Next Article

South Korea’s First Reconnaissance Satellite Delivers High-Quality Pyongyang Imagery