waynakyo
Experienced Member
- Reaction score
- 464
One would say such research should have been done 50 years ago (ok 10 at least).
http://www.ncbi.nlm.nih.gov/pubmed/24981717
[FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]Androgenetic alopecia (Androgenetic Alopecia) is the most common type of baldness in males. The balding process is associated with the gradual miniaturisation of hair follicles and successive hair loss. However, the relative contributions ofhair density and diameter to Androgenetic Alopecia are still unclear.[/FONT]
[h=4][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]OBJECTIVE:[/FONT][/h][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]Hair density and hair diameter were investigated in Japanese males with or without Androgenetic Alopecia to elucidate the importance of these factors in the balding process.[/FONT]
[h=4][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]METHODS:[/FONT][/h][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]Japanese males with or without Androgenetic Alopecia (n = 369) were included in this study. Hair appearance at the vertex was evaluated by comparison with a series of standard photographs. Hair density was measured by using a phototrichogram-based videomicroscopy technique, and hair diameter was assessed by comparison with a series of calibrated threads on the phototrichogram image.[/FONT]
[h=4][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]RESULTS:[/FONT][/h][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]All Androgenetic Alopecia subjects were ≥ 25 years of age. The mean percentage of thick hairs (> 80 μm) in all Androgenetic Alopecia subjects was significantly lower than that in non-Androgenetic Alopecia subjects aged 25 years or more (p < 0.001), but the mean percentage of vellus hairs (< 40 μm) in Androgenetic Alopecia subjects was significantly higher (p < 0.001). By contrast, the mean density of the hair in all Androgenetic Alopecia subjects did not significantly differ from that of non-Androgenetic Alopecia subjects aged 25 years or more. However, the mean density of thehair in non-Androgenetic Alopecia subjects of < 25 years of age was significantly higher than that of either non-Androgenetic Alopecia subjects of ≥ 25 years (p < 0.001) or all Androgenetic Alopecia subjects.[/FONT]
[h=4][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]CONCLUSIONS:[/FONT][/h][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]Hair loss in male Androgenetic Alopecia subjects mainly results from the miniaturisation of hair follicles rather than the lossof hair (shedding), at least for individuals who are ≥ 25 years of age and present with Androgenetic Alopecia. This article is protected by copyright. All rights reserved.[/FONT]
http://www.ncbi.nlm.nih.gov/pubmed/24981717
[FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]Androgenetic alopecia (Androgenetic Alopecia) is the most common type of baldness in males. The balding process is associated with the gradual miniaturisation of hair follicles and successive hair loss. However, the relative contributions ofhair density and diameter to Androgenetic Alopecia are still unclear.[/FONT]
[h=4][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]OBJECTIVE:[/FONT][/h][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]Hair density and hair diameter were investigated in Japanese males with or without Androgenetic Alopecia to elucidate the importance of these factors in the balding process.[/FONT]
[h=4][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]METHODS:[/FONT][/h][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]Japanese males with or without Androgenetic Alopecia (n = 369) were included in this study. Hair appearance at the vertex was evaluated by comparison with a series of standard photographs. Hair density was measured by using a phototrichogram-based videomicroscopy technique, and hair diameter was assessed by comparison with a series of calibrated threads on the phototrichogram image.[/FONT]
[h=4][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]RESULTS:[/FONT][/h][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]All Androgenetic Alopecia subjects were ≥ 25 years of age. The mean percentage of thick hairs (> 80 μm) in all Androgenetic Alopecia subjects was significantly lower than that in non-Androgenetic Alopecia subjects aged 25 years or more (p < 0.001), but the mean percentage of vellus hairs (< 40 μm) in Androgenetic Alopecia subjects was significantly higher (p < 0.001). By contrast, the mean density of the hair in all Androgenetic Alopecia subjects did not significantly differ from that of non-Androgenetic Alopecia subjects aged 25 years or more. However, the mean density of thehair in non-Androgenetic Alopecia subjects of < 25 years of age was significantly higher than that of either non-Androgenetic Alopecia subjects of ≥ 25 years (p < 0.001) or all Androgenetic Alopecia subjects.[/FONT]
[h=4][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]CONCLUSIONS:[/FONT][/h][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]Hair loss in male Androgenetic Alopecia subjects mainly results from the miniaturisation of hair follicles rather than the lossof hair (shedding), at least for individuals who are ≥ 25 years of age and present with Androgenetic Alopecia. This article is protected by copyright. All rights reserved.[/FONT]
