24-Hour Crisis Hotline: (877)SAFEGBC or (877)723-3422 Mental Health & Substance Abuse Issues

6502 Nursery Drive, Suite 100
Victoria, TX 77904
(361)575-0611
(800)421-8825

Medical Disorders
Resources
Basic InformationLookupsLatest News
Money Worries Around Food May Spur MigrainesCould Antibacterial Triclosan Weaken Women's Bones?Buyer Beware: Many Stem Cell Clinics Lack Docs Trained in TreatmentsHealth Tip: Treating a Dog BiteVets With PTSD Face Higher Odds for Early Death From Multiple CausesFDA Expands Cystic Fibrosis Treatment Approval to Children Ages 6 to 12AHA News: Half of U.S. Adults Should Monitor Blood Pressure at Home, Study SaysWidely Prescribed Class of Meds Might Raise Dementia Risk9/11 Dust Linked to Prostate Cancer in First RespondersOcean Swimming Causes Skin Changes: StudyNew Drug Combats Leading Cause of DwarfismAHA News: What Migraine Sufferers Need to Know About Stroke RiskNorovirus Fears Stir Recall of Frozen BlackberriesFlying Insects in Hospitals Carry 'Superbug' GermsU.S. Cases of Infant Gut Illness Plummet After Vaccine IntroducedAHA News: This Faulty Gene May Help Predict Heart Muscle DiseaseCell Mapping Provides New Insights About AsthmaHealth Tip: Recognizing Balance DisordersThe Safer Way to Ease Post-Surgical PainLong Work Hours Tied to Higher Odds for StrokeSudden Death Can Occur Even in Well-Controlled EpilepsyStatins May Lower Risk of Stroke After Cancer RadiotherapyExperimental Drug Shows Early Promise Against Sickle Cell DiseaseFitness in Middle Age Cuts Men's Odds for COPD LaterVitamin D Supplements May Not Help Your HeartHow to Head Off a Pain in the NeckSprouts Supermarkets Recalls Frozen Spinach Due to Listeria FearsA-Fib Can Raise Dementia Risk, Even in Absence of StrokeAnother Climate Change Threat: More 'Flesh-Eating' Bacteria?Heading to Europe This Summer? Get Your Measles ShotAiling Heart Can Speed the Brain's Decline, Study FindsHealth Tip: Preventing GlaucomaHead Injuries Tied to Motorized Scooters Are Rising: StudyOverweight Kids Are at Risk for High Blood PressureHot Water Soak May Help Ease Poor Leg CirculationHealth Tip: Understanding RosaceaHealth Tip: Causes of Swollen Lymph NodesAHA News: Study Provides Rare Look at Stroke Risk, Survival Among American IndiansCDC Opens Emergency Operations Center for Congo Ebola OutbreakScared Safe: Pics of Sun's Damage to Face Boost Sunscreen UseNo Needle Prick: Laser-Based Test Hunts Stray Melanoma Cells in BloodBats Are Biggest Rabies Danger, CDC SaysEmgality Receives First FDA Approval for Treating Cluster HeadacheZerbaxa Approved for Hospital-Acquired Bacterial PneumoniaBlood From Previously Pregnant Women Is Safe for Donation: StudyStudy Refutes Notion That People on Warfarin Shouldn't Eat Leafy GreensCancer Survivors Predicted to Top 22 Million by 2030Your Guide to a Healthier Home for Better Asthma ControlHigh Blood Pressure at Doctor's Office May Be More Dangerous Than SuspectedAHA News: 3 Simple Steps Could Save 94 Million Lives Worldwide
Questions and AnswersLinks
Related Topics

Diabetes

For One Man, Too Much Vitamin D Was Disastrous

HealthDay News
by -- Robert Preidt
Updated: Apr 8th 2019

new article illustration

MONDAY, April 8, 2019 (HealthDay News) -- Vitamin D is the healthy "sunshine" vitamin, but it can have a dark side, one Canadian man discovered.

A team of Toronto physicians reported on the case of a 54-year-old man who developed kidney damage after taking extremely high doses of vitamin D.

It's a cautionary tale for consumers, medical experts say.

"Although vitamin D toxicity is rare owing to a large therapeutic range, its widespread availability in various over-the-counter formulations may pose a substantial risk to uninformed patients," said study co-author Dr. Bourne Auguste. He's a clinical fellow in home dialysis at Toronto General Hospital and the University of Toronto.

As reported April 8 in the CMAJ (Canadian Medical Association Journal), the man was seen by doctors after he returned from a holiday in Southeast Asia, where he spent much of his time sunbathing. Vitamin D is naturally synthesized by the skin upon contact with sunlight.

Testing showed that the man had elevated blood levels of creatinine, a marker for kidney damage or malfunction. The patient was then referred to a kidney specialist and underwent further testing.

Doctors learned that the man had been prescribed high doses of vitamin D by a naturopath -- even though he did not have vitamin D deficiency and no history of bone loss.

Over 30 months, the man had taken eight to 12 drops of vitamin D -- a total of 8,000 to 12,000 International Units (IUs) -- per day.

The typical recommended daily allowance of vitamin D is 400 to 1,000 IU, with a higher amount (800 to 2,000 IU) recommended for adults at high-risk of osteoporosis, and for older adults.

The patient far exceeded those dosages, however, and that led to extremely high levels of calcium in his blood. It's those high blood calcium levels that triggered his kidney damage, Auguste's team said.

"Patients and clinicians should be better informed about the risks regarding the unfettered use of vitamin D," the study authors concluded.

Dr. Maria DeVita directs nephrology (kidney medicine) at Lenox Hill Hospital in New York City. Reading over the case report, she said that "overuse of the vitamin, as is true of many supplements, may have dire adverse effects."

DeVita said, "Vitamin D is necessary for the development and maintenance of strong bones, [but] the take-home message is too much of a good thing is not good."

More information

The Harvard School of Public Health has more on vitamin D.