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Female body shape has a bearing on a wide range of human activities, and there are and have been widely different Ideal s of it in different cultures over history. The female figure is usually narrower at the Waist than at the Chest and Hips , and usually has one of four basic shapes — banana, pear, apple or hourglass. The chest, waist and hips are called inflection points, and the ratios of their Circumference s define these basic shapes. Body shape depends on skeletal structure and the distribution of fat in the body. Some of these body shapes normally occur only in women, although some Endocrine conditions or deliberate use of female hormones, such as by Transsexuals , can produce them in male bodies. As with most physical traits, there is a wide range of normal female body shapes. SHAPE The female form is a combination of multiple attributes which cause many conflicting descriptions when taken as a whole. Three inflection points The female body has three key physical points of inflection:
The female body usually inflects inward towards the waist around the middle of the abdomen. The waist is smaller than the chest and hips, unless there is a high proportion of body fat distributed around the waist. How much the chest or hips inflect inward, towards the waist determines the structural shape. A woman's "dimensions" are often presented by the circumference around these three inflection points. For example "36-24-36" in Imperial Units , meaning a 36 " chest, 24" waist and 36" hips. Four combinatorial structures Independent of fat percentage, weight or width, most female bodies have one of four elementary geometries, ordered by their commonality in western society. ; Banana or Straight: the waist circumference is at least 75% of the chest or hips circumferences, which are virtually the same. The body has a relatively high androgen level compared to the estrogen level, and this causes the skeleton to develop in a more masculine pattern and body fat to be distributed predominantly around the waist. ; Pear or Spoon or Bell (Triangle upward): the waist circumference is at least 75% of the chest circumference, and the hips circumference is at least 110% of the chest circumference. The distribution of fat varies, with fat tending to deposit first in the buttocks, hips and thighs. As body fat percentage increases, an increasing proportion of body fat is distributed around the waist and upper abdomen. ; Apple (Triangle downward): the waist circumference is at most 75% of the chest circumference, and the chest circumference is at least 110% of the hips circumference. Body fat distribution tends to begin in the arms, shoulders, chest and upper abdomen first. ; Hourglass Shape (Triangles opposing, facing in): the waist circumference is less than 75% of the chest or hips circumferences, which are virtually the same. Body fat distribution tends to be around both the upper body and lower body. Their body typically enlarges the arms, breasts, hips and rear before other parts, including waist and upper abdomen. A study of over 6,000 women carried out by researchers at the North Carolina State University around 2005 found that 46% were Banana (rectangular), just over 20% Pear, just under 14% Apple, and 8% HourglassHow Female Body Shape Has Changed http://news.independent.co.uk/uk/this_britain/article328328.ece. New research suggests that hourglass women may live longest, and apple-shaped the shortesthttp://news.bbc.co.uk/2/hi/health/4606011.stm Curvier women 'will live longer'. The inflection points on the female form define a woman's combinational structure. Any structure can occur in a range of proportions. WEIGHT AND FAT DISTRIBUTION Shape is affected by fat distribution due to influence where body fat is stored. Before puberty both males and females have similar WHR. {Link without Title} Normal pre-menopausal female estrogen levels will cause the body to store fat in the buttocks, thighs, and hips. estrogen causes fat to be stored around the pelvic region, hips, butt and thighs [http://www.annecollins.com/obesity/reduce-abdominal-fat.htm] [http://www.healthywomen.org/columns/drpeekescolumn/dbcolumn/waistlineworriesturningapplesbackintopears] Hence, pre-menopausal females generally have fat distributed around their hip section but not around their waist. This causes their . Body Mass Index, which considers only height and total mass, is an approximate method for calculating whether an adult is overweight, underweight or of a healthy weight. Some recent research indicates that the waist-hip ratio is a better measure of obesity than body mass index, particularly for the purpose of determining risk of heart attack. American Journal of Clinical Nutrition August 12,2006 The ideal ratio for women is about 0.71. The Body Fat Percentage is considered to be an even more accurate measure of obesity. Of these three measurements, only the waist-hip ratio uses dimensions that will vary depending upon the body structure. Hence, it is possible for two women to have vastly different body mass indices but the same waist-hip ratio, or to have the same body mass index but vastly different waist-hip ratios. Some cultures consider a voluptuous figure to be the ideal female body shape. Having significant amounts of stored fat, without being obese, has been historically considered to be a sign of Health and Fertility in women. A low waist-hip ratio has often been seen as a sign of fertility and good sexual drive of a female herself, but recent research suggests that it is more correlated to Body Mass Index than previously thought.Tovee MJ, Maisey DS, Emery JL, Cornelissen PL. Visual cues to female physical attractiveness. ''Proc Biol Sci.'' 1999 January 22;266(1415):211-8. PMID: 10097394 {Link without Title} SOCIETAL IMPACT dynasty bronze c. 1200 C.E.]] Many societies vary on their contrasts, criticisms and praise of the female form. Feminism and body shape Feminist s criticise the excessive emphasis on body shape as part of women's Self-image in Western society, and contend that a voluptuous body shape is more typical of real women in the West than the ideal pushed by some parts of the Western media through depictions of extremely thin Actress es and Fashion Model s. However in media made predominantly by and for heterosexual men such as Video Games , Comic Books , Sports Entertainment or Pornography , a more buxom and curvaceous female ideal is portrayed, one that's more in line with the sexual desires of men than those seen in the fashion, beauty or diet industries, suggesting that it's often women themselves who cause their own self-image problems regarding body shape. Anorexia and media depictions of women as depicted by Rubens , circa 1625 ]] Sociocultural studies highlight the role of cultural factors in the incidence of Anorexia Nervosa in women, such as the promotion of thinness as the ideal female form in Western industrialised nations, particularly through the media. A recent epidemiological study of 989,871 Swedish residents indicated that Gender , Ethnicity and Socio-economic Status were highly correlated with the chance of developing anorexia, and women with non-European parents were among the least likely to be diagnosed, while women in wealthy, white families were most at risk.Lindberg L, Hjern A. (2003) Risk factors for anorexia nervosa: a national cohort study. ''Int J Eat Disord'', 34 (4), 397-408. PMID 14566927 A classic study by Garner and Garfinkel demonstrated that those in professions where there is a particular social pressure to be thin (such as Models and Dancer s) were much more likely to develop anorexia during their career,Garner DM, Garfinkel PE. (1980) Socio-cultural factors in the development of anorexia nervosa. ''Psychol Med'', 10 (4), 647-56. PMID 7208724. and further research suggests that those with anorexia have much higher contact with cultural sources that promote weight-loss.Toro J, Salamero M, Martinez E. (1994) Assessment of sociocultural influences on the aesthetic body shape model in anorexia nervosa. ''Acta Psychiatr Scand'', 89 (3), 147-51. PMID 8178671. Although anorexia nervosa is usually associated with Western cultures, exposure to Western media is thought to have led to an increase in cases in non-Western counties. But other cultures may not display the same worries about becoming fat as those with the condition in the West, but instead may present with low appetite with the other common features.Simpson KJ. (2002) Anorexia nervosa and culture. ''J Psychiatr Ment Health Nurs'', 9 (1), 65-71. PMID 11896858. See Also: Anorexia nervosa SEE ALSO
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