Hair dyeing, hair washing and hair cortisol concentrations among women from the healthy start study
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Hair dyeing, hair washing and hair cortisol concentrations among women from the healthy start study. / Kristensen, Sheila K.; Larsen, Sofus C.; Olsen, Nanna J.; Fahrenkrug, Jan; Heitmann, Berit L.
In: Psychoneuroendocrinology, Vol. 77, 03.2017, p. 182-185.Research output: Contribution to journal › Letter › Research › peer-review
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TY - JOUR
T1 - Hair dyeing, hair washing and hair cortisol concentrations among women from the healthy start study
AU - Kristensen, Sheila K.
AU - Larsen, Sofus C.
AU - Olsen, Nanna J.
AU - Fahrenkrug, Jan
AU - Heitmann, Berit L.
PY - 2017/3
Y1 - 2017/3
N2 - Background: Hair cortisol concentration (HCC) has been suggested as a promising marker for chronic stress. However, studies investigating the influence of hair dyeing and hair washing frequency on HCC have shown inconsistent results.Objective: To examine associations between HCC and hair dyeing status or weekly hair washing frequency among women.Methods: This cross-sectional study was based on data from 266 mothers participating in the Healthy Start intervention study. HCC was measured in the proximal end of the hair (1–2 cm closest to the scalp) while hair dyeing status, frequency of hair washing and covariates were reported by the women. Linear regression analyses were applied to assess the associations between HCC and hair dyeing or weekly frequency of hair washing.Results: No statistically significant difference (p = 0.91) in HCC was found between women who dyed hair (adjusted mean: 137 pg/mg [95% CI: 122,153]) and women with natural hair color (adjusted mean: 139 pg/mg [95% CI: 123,155]). Frequency of hair washing was not associated with HCC (β: −3.7 [95% CI: −9.0, 1.5; P = 0.20]).Conclusions: This study of 266 Danish women provides no evidence in support of an association between HCC and hair dyeing status or hair washing frequency.
AB - Background: Hair cortisol concentration (HCC) has been suggested as a promising marker for chronic stress. However, studies investigating the influence of hair dyeing and hair washing frequency on HCC have shown inconsistent results.Objective: To examine associations between HCC and hair dyeing status or weekly hair washing frequency among women.Methods: This cross-sectional study was based on data from 266 mothers participating in the Healthy Start intervention study. HCC was measured in the proximal end of the hair (1–2 cm closest to the scalp) while hair dyeing status, frequency of hair washing and covariates were reported by the women. Linear regression analyses were applied to assess the associations between HCC and hair dyeing or weekly frequency of hair washing.Results: No statistically significant difference (p = 0.91) in HCC was found between women who dyed hair (adjusted mean: 137 pg/mg [95% CI: 122,153]) and women with natural hair color (adjusted mean: 139 pg/mg [95% CI: 123,155]). Frequency of hair washing was not associated with HCC (β: −3.7 [95% CI: −9.0, 1.5; P = 0.20]).Conclusions: This study of 266 Danish women provides no evidence in support of an association between HCC and hair dyeing status or hair washing frequency.
KW - Hair cortisol
KW - Chronic stress
KW - Hair wash
KW - Shampoo
KW - Hair dye
KW - Chemicals
U2 - 10.1016/j.psyneuen.2016.12.016
DO - 10.1016/j.psyneuen.2016.12.016
M3 - Letter
C2 - 28073090
VL - 77
SP - 182
EP - 185
JO - Psychoneuroendocrinology
JF - Psychoneuroendocrinology
SN - 0306-4530
ER -
ID: 180577518