Numerous people use hair shading incidentally or consistently so as to reestablish turning gray hair to its unique shading, or to change their hair shading to an increasingly alluring or progressively stylish shading, or even to restore their hair shading to its past tint after it has been harmed by synthetic compounds or sun blanching. Be that as it may, brief or perpetual hair hues can have antagonistic wellbeing impacts. Other than making solid hair become dry or weak, a portion of the synthetic substances in hair shading items have been connected with malignant growth. Be that as it may, it isn’t absolutely evident whether hair shading items really create any types of malignancy. Numerous investigations have taken a gander at the inquiry, however the outcomes are uncertain. 艶黒美人
Since hair colors and most expert applications contact the scalp a portion of the synthetic substances in the item can work their way into the numerous little veins that supply the scalp. From the scalp the synthetic concoction
s can work their way into the blood supply and into the body’s numerous organs, particularly the bladder.
A few investigations throughout the years have suggested a connection between bladder malignant growth and hair shading items. An examination financed by the National Cancer Institute, performed by the Keck School of Medicine at the University of Southern California, and detailed in 2001 thought about 1514 bladder malignant growth patients in Los Angeles with a populace of 1514 non-patients who lived in similar neighborhoods. The investigation was balanced for tobacco smoking, a known supporter of bladder malignant growth. The investigation revealed that ladies who utilized perpetual hair color month to month for a year or longer were twice as liable to create bladder malignant growth as ladies who didn’t utilize lasting hair color. The investigation likewise demonstrated that the individuals who utilized lasting hair color month to month for a long time or more were multiple times as liable to create bladder malignant growth. Further, the examination indicated that beauticians and hairdressers with one year of introduction to hair colors were half bound to create bladder malignancy and those with 10 years of expert presentation were multiple times bound to create bladder disease.
The USC concentrate likewise reasoned that there was not an association among impermanent and semi-perpetual hair colors and bladder malignant growth. These colors typically last just half a month and wash out moderately rapidly. The American Cancer Society gauges that bladder malignant growth speaks to 6% of disease cases in men and 2% of malignant growth cases in ladies.
Then again the Food and Drug Administration (FDA) and the American Cancer Society discharged an epidemiological investigation in 1994 that included 573,000 ladies. This investigation didn’t presume that a connection between the utilization of perpetual hair shading and passings from bladder malignant growth among ladies existed.
Different investigations have concentrated on platelet tumors including lymphomas, leukemia, and myelomas. The American Journal of Epidemiology in 2004 distributed consequences of an examination by Yale University scientists that proposed that drawn out use of dim hair color may somewhat build the danger of creating non Hodgkin’s lymphoma yet that it was anything but an indisputable reason for malignancy. The examination called attention to that individuals who utilized hair hues before 1980 may have an expanded hazard for disease. Hair colors have changed since 1980 when the utilization of synthetic substances that were known to cause malignant growth in mice was wiped out.
In 2005 Spanish analysts detailed in the Journal of the American Medical Association about a survey of 79 unique investigations from 11 nations. Their meta study inferred that there was not solid proof of a connection between hair color and an expanded danger of malignant growth.
A report distributed in 2008 in Lancet Oncology from the International Agency for Research on Cancer presumed that experts who work routinely with hair colors most likely face an expanded danger of malignancy. Notwithstanding, it additionally presumed that periodic individual utilization of hair colors most likely doesn’t raise the danger of contracting malignancy.