It was found out by oncologists from Yale University that use of hair dyes increases the risk of lymphoma, that is cancer of the blood.
They examined the state of health of 4461 patients with such diagnosis and 5799 healthy patients. Among the participants in the survey 75% of women and 10% of men have at least once in their lives dyed their hair. Doctors have discovered that hair dyes increase the risk of cancer formations of blood by 30%, including chronic leukemia and follicle lymphoma. Substances in dyes led most often to follicle lymphoma - indelible form of cancer with high degree of malignity, researchers registered. It was also noted that the risk of dangerous diseases were lower among people who used black color dyes.

Shares fell 2.1 per cent Friday on the Seoul stock exchange on general recession fears. South Korea's won dropped against the dollar.
When the Spirit rover landed on Mars five years ago, no one expected it or its sister rover Opportunity to make it to their first birthdays, let alone their fifth.
Amelie Mauresmo fell victim to a leg injury after less than half an hour on court Friday to hand over a 4-0 victory which put French compatriot Marion Bartoli into the final of the Brisbane International.
Mumbai-based movie Slumdog Millionaire won five prizes Thursday night at the Critics Choice Awards, cementing its position as a surprise favourite just as the Oscar season moves into high gear.
After the Taipei Zoo received two giant pandas from China, another Taiwan zoo said Friday it is seeking to receive a pair of pandas from China.