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Your friend who told you about menstrual flow is also grossly misinformed. The heaviness or lightness of flow has absolutely nothing to do with the vagina, in any way, at all. Menstrual flow comes from the endometrium inside your uterus (which the vagina is a path too, but is a separate organ, inside your body), and how heavy a person's flow is is about a bunch of things, primarily on your hormones (especially in puberty where estrogens are so high) but even just a person's height (taller people who menstruate more often have heavier flow, for instance) or weight, or if a person is taking aspirin for their cramps can increase flow. It's not about their vagina: that's only the passage menses passes through: it has no influence on flow. So, now you know better and you can also fill her in on the real deal! That can cause issues in your ovaries, which produce the egg that’s released each month as part of your menstrual cycle. With PCOS, this egg might have developmental problems or not be released during your period as it normally would. Vallbo A. B., Olausson H., Wessberg J. (1999). Unmyelinated afferents constitute a second system coding tactile stimuli of the human hairy skin. J. Neurophysiol. 81, 2753–2763
Norrsell U., Eliasson B., Frizell M., Wallin B. G., Wesslau C., Olausson H. (2001). Tactile directional sensibility and diabetic neuropathy. Muscle Nerve 24, 1496–1502
Costarelis, G. (n.d.). How do hairs like thoseon the chest or in the nose know to grow when you trim them? Verma EK, et al. (1989). Ear-lobe crease andear-canal hair as predictors of coronary artery disease in Indian population. Sorokowska A., Saluja S., Sorokowski P., et al. (2021). Affective interpersonal touch in close relationships: a cross-cultural perspective. Personality & Social Psychology Bulletin, 47, 1705–21. [ PubMed] [ Google Scholar] Andrew, D. ( 2010) Quantitative characterization of low-threshold mechanoreceptor inputs to lamina I spinoparabrachial neurons in the rat.
It is possible for hormonal imbalances to cause hairy nipples. Overproduction of male hormones, including testosterone, can cause hair growth, while other symptoms include:
Conclusions
Case L.K., Laubacher C.M., Olausson H., Wang B., Spagnolo P.A., Bushnell M.C. (2016). Encoding of touch intensity but not pleasantness in human primary somatosensory cortex. The Journal of Neuroscience : The Official Journal of the Society for Neuroscience, 36, 5850–60. [ PMC free article] [ PubMed] [ Google Scholar]
Again, we probed whether the relationship between velocity and pleasantness differed between Experiments 1 and 2. Because a model run on trial data failed to converge, we computed the mean pleasantness for each condition and participant and subjected those means to a model with velocity, experiment and their interaction as fixed effects and the participant intercepts as the random effect. This returned a significant interaction of velocity and experiment (F[2,356]=15.04, P<0.001). Inspection of linear and quadratic effects showed that the interaction was significant for the former (ß=2.85, SE=0.53, P<0.0001) and non-significant for the latter ( P=0.378). This implies that the association between stroking velocity and pleasantness was significantly smaller or more negative for hairy when compared with glabrous skin. Dagnino-Subiabre A. (2022). Resilience to stress and social touch. Current Opinion in Behavioral Sciences, 43, 75–9. [ PMC free article] [ PubMed] [ Google Scholar] Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. We avoid using tertiary references. We link primary sources — including studies, scientific references, and statistics — within each article and also list them in the resources section at the bottom of our articles. You can learn more about how we ensure our content is accurate and current by reading our editorial policy. Liu Q., Vrontou S., Rice F. L., Zylka M. J., Dong X., Anderson D. J. (2007). Molecular genetic visualization of a rare subset of unmyelinated sensory neurons that may detect gentle touch. Nat. Neurosci. 10, 946–948Trimming the nipple hair may be enough to reduce its appearance. Small nail scissors are ideal, and hair can be cut close to the skin. It is essential to do this carefully and avoid catching the skin. Georgopoulos, A.P. ( 1976) Functional properties of primary afferent units probably related to pain mechanisms in primate glabrous skin. Wessberg, J. ( 2009) Somatotopic organization of gentle touch processing in the posterior insular cortex. Kakuda, N. ( 1995) Receptive field characteristics of tactile units with myelinated afferents in hairy skin of human subjects.
Vallbo A. B., Johansson R. S. (1984). Properties of cutaneous mechanoreceptors in the human hand related to touch sensation. Hum. Neurobiol. 3, 3–14 Hormonal changes in women can cause many different symptoms, one of which is changes in nipple hair growth and color. Morrison I. (2016). ALE meta-analysis reveals dissociable networks for affective and discriminative aspects of touch. Human Brain Mapping, 37, 1308–20. [ PMC free article] [ PubMed] [ Google Scholar] Kayser J., Tenke C.E. (2015). On the benefits of using surface Laplacian (Current Source Density) methodology in electrophysiology. International Journal of Psychophysiology: Official Journal of the International Organization of Psychophysiology, 97, 171–3. [ PMC free article] [ PubMed] [ Google Scholar] There are treatments that can get rid of unwanted hair for longer than the things you can do at home. But they're not usually permanent.
Author Contributions
It is also important to bear in mind that the hair will return, and tweezing the hair increases the risk of infection and ingrown hairs. Delorme A., Makeig S. (2004). EEGLAB: an open source toolbox for analysis of single-trial EEG dynamics including independent component analysis. Journal of Neuroscience Methods, 134, 9–21. [ PubMed] [ Google Scholar] Pawling R., Cannon P.R., McGlone F.P., Walker S.C., Tremblay F. (2017). C-tactile afferent stimulating touch carries a positive affective value. PLoS One, 12, e0173457. [ PMC free article] [ PubMed] [ Google Scholar]
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