Primary biliary cirrhosis is the first sign of cirrhosis of the liver, and is often linked to urinary tract infections, psoriasis or shingles. However, according to a study published in the journal of gastroenterology and hepatology Gut, women who dye their hair have a 37% higher risk of suffering from primary biliary cirrhosis than those who do not.
The study authors note that they have not determined which element in the dye is responsible for the disease, but according to previous research, primary biliary cirrhosis could be linked to chemicals like octynoic acid, found in cosmetics such as hair dyes or nail polish.
Octynoic acid is also present in cigarettes, and researchers have found that smokers are also more likely to have primary biliary cirrhosis, as are those who have experienced autoimmune disease, such as the disease. celiac, or rheumatoid arthritis.