Contrarily, graying of hair was not associated with smoking (p-value = 0.238), and also no association was found with previous history of gray hair (p-value = 0.592), family history of baldness (p-value = 0.728), thyroid disease (p-value = 0.315) and vitiligo (p-value = 0.491) (Table 2).
Other than being the most preventable reason for morbidities and an imperative reason for death globally, tobacco smoking has been related with other adverse impacts on the skin.9 Premature hair graying due to smoking has caused a stir in medical community encouraging researchers to explore further aspects in this regard.
They also reported that it was observed that a positive and significant correlation was present between age and mean percent individuals with graying of hair in smokers, chewers, and smokers + chewers, respectively (p-values < 0.05).
Contrarily, graying of hair was not associated with smoking (p-value=0.238), and also no association was found with previous history of gray hair (p-value = 0.592), family history of baldness (p-value = 0.728), thyroid disease (p-value = 0.315) and vitiligo (p-value = 0.491).
Another study conducted on 522 males and 480 women reported that 51.5% subjects with gray hair were in their thirties with overall onset of hair graying at 41.6 +- 13.1 years.
Premature hair graying and baldness are also included in some of these effects.13 The role of dermatologist is hence important for counseling of patients presenting with these problems to quit smoking and other means of tobacco.14 Further researches is recommended to explore the etiology and understand mechanism of hair loss or graying due to smoking.
Association between use of tobacco and age on graying of hair.