scholarly journals Health Status by Gender, Hair Color, and Eye Color: Red-Haired Women are the Most Divergent with the Lowest Viability and the Highest Fertility

2017 ◽  
Author(s):  
P. Frost ◽  
K. Kleisner ◽  
J. Flegr
Keyword(s):  
Health Outcomes ◽  
Black Hair ◽  
Hair Color ◽  
Specific Factor ◽  
Ancestral State ◽  
Physical And Mental Health ◽  
Eye Color ◽  
Number Of Children ◽  
Red Hair ◽  
Better Than

AbstractBackgroundRed hair is associated with pain sensitivity, and more so in women than in men. Hair redness may thus interact with a female-specific factor. We tested this hypothesis on a large sample of Czech and Slovak respondents. They were asked about the natural redness and darkness of their hair, their natural eye color, their physical and mental health (24 categories), and other personal attributes (height, weight, number of children, lifelong number of sexual partners, frequency of smoking).ResultsWe found that red-haired women did worse than other women in ten health categories and better in only three. In particular, they were more prone to colorectal, cervical, uterine, and ovarian cancer. Cancer risk increased steadily with increasing hair redness except for the reddest shade. Red-haired men showed a balanced pattern of health effects, doing better than other men in three categories and worse in three. Number of children was the only category where both male and female redheads did better than other respondents. We also confirmed earlier findings that red hair is naturally more frequent in women than in men.ConclusionRed-haired women had higher fecundity and sexual attractiveness, but this selective advantage seems offset by worse health outcomes and therefore lower viability. The resulting equilibrium between these two counterbalancing forces might explain why red hair has remained less common than other hair and eye colors. Of the ‘new’ hair and eye colors, red hair diverges the most from the ancestral state of black hair and brown eyes. It is the most sexually dimorphic variant, not only in population frequency but also in health outcomes. This sexual dimorphism seems to have resulted from a selection pressure that acted primarily on early European women and which led to a general and apparently rapid diversification of hair and eye colors.

scholarly journals Genomic expression differences between cutaneous cells from red hair color individuals and black hair color individuals based on bioinformatic analysis

Oncotarget ◽  
2016 ◽  
Vol 8 (7) ◽  
pp. 11589-11599 ◽  
Author(s):  
Joan Anton Puig-Butille ◽  
Pol Gimenez-Xavier ◽  
Alessia Visconti ◽  
Jérémie Nsengimana ◽  
Francisco Garcia-García ◽  
...  
Keyword(s):  
Bioinformatic Analysis ◽  
Black Hair ◽  
Hair Color ◽  
Genomic Expression ◽  
Red Hair

Effect of Honeysuckle Extract for Color Protection of Human Hair Exposed to Sunlight Radiation

2013 ◽  
Vol 821-822 ◽  
pp. 28-31
Author(s):  
Yuan Chen ◽  
Qiong Li ◽  
Wan Ping Zhang ◽  
Jian Jie Cui ◽  
Xiao Jian Wu
Keyword(s):  
Color Change ◽  
Black Hair ◽  
Hair Color ◽  
Protective Effects ◽  
Natural Pigment ◽  
Protection Effect ◽  
Sunlight Irradiation ◽  
Red Hair ◽  
Silicone Emulsion ◽  
Color Fading

Color protective effects of honeysuckle extract, benzophenone-3, and non-ionic silicon emulsion to hair fibers were compared by measuring color change of hair exposed to UV irradiation. Dyed color fades faster than natural pigment of hair after sunlight irradiation. Experiment results indicate that honeysuckle extract prevented color fading of dyed red hair in 49.52% and virgin black hair in 19.35% due to its strong antioxidant ability, while color protection effect of benzophenone-3 is not obvious. Non-ionic silicone emulsion provided the best maintenance of hair color of 81.46% in dyed red hair and 41.94% in virgin black hair. However, the synergy of honeysuckle extract with non-ionic silicone emulsion for hair color protecting was not encouraged.

scholarly journals Hair phenotype diversity across Indriidae lemurs

2021 ◽  
Author(s):  
Elizabeth Tapanes ◽  
Rachel L. Jacobs ◽  
Ian Harryman ◽  
Edward E. Louis ◽  
Mitchell T. Irwin ◽  
...  
Keyword(s):  
Empirical Evidence ◽  
Density Variation ◽  
The Body ◽  
Black Hair ◽  
Whole Body ◽  
Hair Color ◽  
Vertical Posture ◽  
Hair Density ◽  
Red Hair ◽  
Gloger’S Rule

Hair (i.e., pelage/fur) is a salient feature of primate (including human) diversity and evolution-serving functions tied to thermoregulation, protection, camouflage, and signaling-but wild primate pelage biology and evolution remain relatively understudied. Specifically, assessing multiple hypotheses across distinct phylogenetic scales is essential but is rarely conducted. We examine whole body hair color and density variation across the Indriidae lemurs (Avahi, Indri, Propithecus)-a lineage that, like humans, exhibits vertical posture (i.e., their whole bodies are vertical to the sun). Our analyses consider multiple phylogenetic scales (family-level, genus-level) and hypotheses (e.g., Gloger's rule, the body cooling hypotheses). Our results show that across the Indriidae family, darker hair is typical in wetter regions (per Gloger's rule). However, within Propithecus, dark black hair is common in colder forest regions, which may implicate thermoregulation and is the first empirical evidence of Bogert's rule in mammals. Results also show pelage redness increases in populations exhibiting enhanced color vision and may thus aid conspecific communication in forested environments. Lastly, across Indriidae, we find follicle density on the crown and limbs increases in dry and open environments-rare empirical evidence supporting an early hypothesis on hominin hair evolution. We find an effect of body size on hue (red hair) and hair density but not on brightness (black hair). This study highlights how different selective pressures across distinct phylogenetic scales have likely acted on primate hair evolution. Lastly, since hair does not fossilize, the results of follicle and hair density variation across this clade offer us some potential insight into contextualizing human hair evolution.

МЕКТЕП ЖАШЫНА ЧЕЙИНКИ БАЛДАРДЫН ДЕН СООЛУГУН ЧЫҢДООДО ОЮН ТЕХНОЛОГИЯСЫН КОЛДОНУУ

2020 ◽  
pp. 158-160
Author(s):  
Салтанат Кошалиева
Keyword(s):  
Physical Education ◽  
Preschool Education ◽  
Speech Development ◽  
The Body ◽  
Preschool Age ◽  
Theory And Practice ◽  
Main Task ◽  
Physical And Mental Health ◽  
School Students ◽  
Number Of Children

Аннотация: Бул макалада мектеп жашына чейинки балдардын ден соолугун чыңдоодо оюн технологиясын пайдалануунун өзгөчөлүктөрү талкууланат. Метепке чейинки курак баланын дене-бой жана психикалык ден соолугунун пайдубалын түптөөнүн чечүүчү этабы болуп саналат. Бул мезгилде органдардын ургаалдуу өнүгүшү жана организмдин функциялык системасынын калыптанышы жүрүүдө. Акыркы жылдары мектепке чейинки балдардын ден соолугунун начарлаганы туруктуу тенденцияга айланып, оорулуу балдардын саны көбөйүүдө. Мектеп жашына чейинки балдардын психикалык жана сүйлөө жөндөмдөрүн оюн аркылуу жакшыртып, жаңы механизмдерин иштеп чыгуу жагы каралган. Бала бакчанын негизги милдети - баланы өз алдынча жашоого даярдоо, жакшы адаттарга багыттоо менен тарбиялоо иши макалада каралган. Түйүндүү сөздөр: Ден соолук, бала бакчада, дене тарбия, элдик оюндар, тарбиялоо, ден соолукту чыңдоо, иш пландар, жаш муундар, коюлган талаптар, педагогикалык шарттар. Аннотация: В данной статье рассматриваются особенности использования игровых технологий в оздоровлении дошкольников. Дошкольный возраст является решающим этапом в формировании фундамента физического и психического здоровья ребенка. В этот период идет интенсивное развитие органов и становление функциональных систем организма. Наметившаяся в последние годы устойчивая тенденция ухудшения здоровья дошкольников, увеличение количества детей с нарушениями психического и речевого развития, диктует необходимость поиска механизмов, позволяющая изменить эту ситуацию. Основная задача детского сада - подготовить ребенка к самостоятельной жизни, дав ему для этого необходимые умения, навыки, воспитав определенные привычки. Сегодня в дошкольных учреждениях уделяется большое внимание здоровье сберегающим технологиям, которые направлены на решение самой главной задачидошкольного образования – сохранить, поддержать и обогатить здоровье детей. Ключевые слова: Здоровье, детский сад, физическое воспитание, народные подвижные игры, физические упражнения, общеобразовательная школа, учащиеся, воспитание, оздоровление, подрастающее поколение, предъявляемые требования, педагогические условия, теория и практика физического воспитания, подвижные игры. Abstract: This article discusses the features of the use of game technologies in the rehabilitation of preschoolers. Preschool age is a crucial stage in the formation of the Foundation of physical and mental health of the child. During this period there is an intensive development of organs and the formation of functional systems of the body. The steady tendency of deterioration of health of preschool children outlined in recent years, increase in number of children with violations of mental and speech development, dictates need of search of the mechanisms allowing to change this situation. The main task of the kindergarten is to prepare the child for independent life, giving him the necessary skills, bringing up certain habits. Today, preschool institutions pay great attention to health-saving technologies, which are aimed at solving the most important task of preschool education – to preserve, support and enrich the health of children. Key words: Health, kindergarten, physical education, folk outdoor games, physical exercises, secondary school, students, education, rehabilitation, the younger generation, the requirements, pedagogical conditions, theory and practice of physical education, out-door games.

Disentangling adversity timing and type: Contrasting theories in the context of maternal prenatal physical and mental health using latent formative models

2021 ◽  
pp. 1-13
Author(s):  
André Plamondon ◽  
Nicole Racine ◽  
Sheila McDonald ◽  
Suzanne Tough ◽  
Sheri Madigan
Keyword(s):  
Mental Health ◽  
Health Outcomes ◽  
Middle Childhood ◽  
Emotional Abuse ◽  
Physical And Mental Health ◽  
Physical Health Outcomes ◽  
Mental Health Difficulties ◽  
Cumulative Adversity ◽  
Independent Effects ◽  
In Pregnancy

Abstract Research on the effects of adversity has led to mounting interest in examining the differential impact of adversity as a function of its timing and type. The current study examines whether the effects of different types (i.e., physical, sexual, and emotional abuse) and timing (i.e., early, middle childhood, adolescence, or adulthood) of adversity on maternal mental and physical health outcomes in pregnancy, are best accounted for by a cumulative model or independent effects model. Women from a prospective pregnancy cohort (N =3,362) reported retrospectively on their experiences of adversity (i.e., physical, sexual, and emotional abuse) in early childhood (0–5 years], middle childhood (6–12 years], adolescence (13–18 years], and adulthood (19+ years]. Measures of overall health, stress, anxiety, and depression were gathered in pregnancy. Results showed that a cumulative formative latent model was selected as more parsimonious than a direct effects model. Results also supported a model where the strength of the effect of adversity did not vary across abuse timing or type. Thus, cumulative adversity resulted in greater physical and mental health difficulties. In conclusion, cumulative adversity is a more parsimonious predictor of maternal physical and mental health outcomes than adversity at any one specific adversity timing or subtype.

scholarly journals Potential impact of physical distancing on physical and mental health: a rapid narrative umbrella review of meta-analyses on the link between social connection and health

BMJ Open ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. e042335
Author(s):  
Nexhmedin Morina ◽  
Ahlke Kip ◽  
Thole Hilko Hoppen ◽  
Stefan Priebe ◽  
Thomas Meyer
Keyword(s):  
Mental Health ◽  
Health Outcomes ◽  
Social Isolation ◽  
Physical Symptoms ◽  
Vaccine Uptake ◽  
Living Alone ◽  
Mental Health Outcomes ◽  
Social Connection ◽  
Physical And Mental Health ◽  
Meta Analyses

BackgroundThe imperative for physical distancing (mostly referred to as social distancing) during COVID-19 pandemic may deteriorate physical and mental health. We aimed at summarising the strength of evidence in the published literature on the association of physical and mental health with social connection via social isolation, living alone and loneliness.MethodsWe conducted a systematic search in April 2020 to identify meta-analyses using the Medline, PsycINFO and Web of Science databases. The search strategy included terms of social isolation, loneliness, living alone and meta-analysis. Eligible meta-analyses needed to report any sort of association between an indicator of social connection and any physical or mental health outcome. The findings were summarised in a narrative synthesis.ResultsTwenty-five meta-analyses met our criteria, of which 10 focused on physical health and 15 on mental health outcomes. The results suggest that lack of social connection is associated with chronic physical symptoms, frailty, coronary heart disease, malnutrition, hospital readmission, reduced vaccine uptake, early mortality, depression, social anxiety, psychosis, cognitive impairment in later life and suicidal ideation.ConclusionsThe existing evidence clearly indicates that social connection is associated with a range of poor physical and mental health outcomes. A potential negative impact on these outcomes needs to be considered in future decisions on physical distancing measures.

scholarly journals Owners’ Perceptions of Pet influence: Relation to Health Outcomes & Pet Attachment in Community-Living Older Adults

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 926-926
Author(s):  
Erika Friedmann ◽  
Nancy Gee ◽  
Eleanor Simonsick ◽  
Barbara Resnick ◽  
Erik Barr ◽  
...  
Keyword(s):  
Older Adults ◽  
Health Outcomes ◽  
Negative Influence ◽  
Community Dwelling ◽  
Three Dimensions ◽  
Psychological Status ◽  
Physical And Mental Health ◽  
Oblique Rotation ◽  
Fiscal Health ◽  
Pet Attachment

Abstract Pet ownership (PO) has been linked to better health outcomes in older adults, particularly those with chronic health conditions. It is suggested that pets influence their owners lives both by encouraging social interaction and by interfering with owners’ willingness or ability to seek care for themselves. We use data from 6 questions about the positive and negative influence of pets on community dwelling older adults’ administered to pet owners (N=223, age >=50 years) in the Baltimore Longitudinal Study of Aging. We use principal components analysis (oblique rotation) to extract dimensions of owner’s perceptions of pet influences (PPI) and examine the relationship of these dimensions to owners’ cognitive, physical functional, and psychological status. Three dimensions of PPI include: fiscal/health challenges (F1: 3 items, alpha=0.70), wellness promotion (F2: 2 items, alpha=0.80); and reason for social/travel constraints (F3: 1 item). In regression analysis with all factors entered simultaneously, after controlling for age, higher magnitude of F1 significantly independently predicted poor physical quality of life (p=.0007), greater perceived stress (p=0.041), and lower happiness (p=0.014); F2 did not independently predict any health outcome; higher F3 significantly independently predicted lower emotional vitality (p=0.048). Controlling for age, all three factors were independent predictors of pet attachment (p’s=0.001, 0.010, 0.047, respectively). F1 and F3 were positively and F2 was negatively correlated with attachment. PPI was associated with owners’ physical and mental health. Perhaps older adults with higher attachment to pets are more likely to keep them despite higher challenges.

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