Supplements should only be incorporated into your routine once you fully understand their proper application. When taken indiscriminately and without regard for safety precautions, they can often do more harm than good. Experts are specifically warning that high-dose Vitamin A—a popular choice for ocular and skin health—can significantly deteriorate liver function if misused.
Gastroenterologist Kim Tae-gyun, speaking on the YouTube channel Doctor Dingyo, noted, "In most cases, taking Vitamin A in high doses leads to an increase in liver enzyme levels." He added a recommendation to "avoid relying too heavily on supplements and instead prioritize obtaining nutrients through whole foods."
High-Dose Acne Treatments and Liver Strain
Vitamin A is widely recognized for its role in supporting vision, particularly in low-light conditions, and maintaining the integrity of skin and mucous membranes. By promoting the differentiation and regeneration of skin cells, it strengthens the skin barrier and regulates sebum production—qualities that make it a common target for those struggling with acne.
However, using high-dose Vitamin A (approximately 10,000 IU or more) for dermatological issues can place a severe burden on the liver. Dr. Kim highlighted a cautionary case: "An 18-year-old woman took 100,000 IU of Vitamin A daily for 16 months to treat her acne, subsequently developing severe fatigue and muscle stiffness. Clinical tests revealed her liver enzyme levels were more than three times the normal limit."
He further emphasized the lasting impact of such toxicity, noting that the patient experienced symptoms like fatigue and nosebleeds for ten months even after discontinuing the supplement. "Do not attempt to solve complex skin problems solely with supplements," Dr. Kim urged. "Seek professional care from a dermatologist."
The Danger of Fat-Solubility: Extra Caution for Liver Disease
The link between Vitamin A and liver toxicity stems from its nature as a fat-soluble vitamin. Unlike water-soluble nutrients such as Vitamin C, which are excreted through urine when consumed in excess, Vitamin A is stored in the liver.
This accumulation poses a higher risk for individuals who consume alcohol frequently or those with pre-existing liver conditions. Furthermore, patients who take multiple different supplements simultaneously may unknowingly reach toxic levels through "supplement stacking."
Benefits and Safer Alternatives
Despite these risks, Vitamin A remains an essential nutrient. Beyond eye and skin health, it supports immune cell function, protects against pathogens, and is vital for tissue formation and childhood growth.
To reap these benefits while minimizing the risk of side effects, experts suggest prioritizing Vitamin A-rich foods. The nutrient is abundant in:
Carrots and spinach
Perilla leaves
Animal liver
Egg yolks
If dietary intake remains insufficient, always consult a healthcare professional to determine a safe and appropriate dosage before starting a Vitamin A regimen.
