Underweight but not underfat: is fat-free mass a key factor in constitutionally thin women?
Constitutional thinness is defined as a state of severe underweight with a body mass index similar to anorectic patients (BMI
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| Veröffentlicht in: | European journal of clinical nutrition 2021-12, Vol.75 (12), p.1764-1770 |
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| container_title | European journal of clinical nutrition |
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| creator | Bailly, Mélina Boscaro, Audrey Pereira, Bruno Courteix, Daniel Germain, Natacha Galusca, Bogdan Boirie, Yves Thivel, David Verney, Julien |
| description | Constitutional thinness is defined as a state of severe underweight with a body mass index similar to anorectic patients (BMI |
| doi_str_mv | 10.1038/s41430-021-00895-5 |
| format | Article |
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2
), in the absence of any eating disorders or other obvious disruptive factors impacting energy balance. The analysis of body composition is essential as a first approach to characterize constitutional thinness and might help identify new discriminating differences between constitutional thinness and anorexia nervosa. A meta-analytical approach was performed to compare body composition of constitutionally thin, anorectic, and normal-weight subjects from all available studies found in the literature. The statistical analysis was carried out on large sample sizes:
n
= 205 females with constitutional thinness,
n
= 228 normal-weight control females, and
n
= 258 females with anorexia nervosa. Despite being as underweight as anorectic patients, constitutionally thin participants paradoxically presented higher percentages of fat mass than anorectic patients (18.9%
vs
. 11.4%, respectively; SMD [95% CI]: 1.62 [1.16; 2.08]), even found in the normal healthy ranges. Constitutionally thin people, however, display as low fat-free mass as anorectic patients. These observations question the use of high-fat diets in this population and bring new insights for nutrition and/or training strategies directed toward muscle mass gain. The present results give new elements to further distinguish constitutional thinness from anorexia nervosa and reinforce the need to better investigate the atypical phenotype of constitutional thinness.</description><identifier>ISSN: 0954-3007</identifier><identifier>EISSN: 1476-5640</identifier><identifier>DOI: 10.1038/s41430-021-00895-5</identifier><identifier>PMID: 33772214</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>631/443 ; 692/1807 ; Anorexia ; Anorexia Nervosa ; Body composition ; Body Composition - physiology ; Body fat ; Body Mass Index ; Body size ; Clinical Nutrition ; Diagnosis ; Eating disorders ; Energy balance ; Epidemiology ; Fat-free body mass ; Feeding and Eating Disorders ; Female ; Females ; Food and Nutrition ; Health aspects ; High fat diet ; Humans ; Identification and classification ; Internal Medicine ; Leanness ; Life Sciences ; Low fat ; Low fat diet ; Medicine ; Medicine & Public Health ; Metabolic Diseases ; Mini Review ; Muscles ; Nutrition ; Phenotypes ; Public Health ; Statistical analysis ; Thinness ; Underweight ; Weight</subject><ispartof>European journal of clinical nutrition, 2021-12, Vol.75 (12), p.1764-1770</ispartof><rights>The Author(s), under exclusive licence to Springer Nature Limited 2021</rights><rights>2021. The Author(s), under exclusive licence to Springer Nature Limited.</rights><rights>COPYRIGHT 2021 Nature Publishing Group</rights><rights>The Author(s), under exclusive licence to Springer Nature Limited 2021.</rights><rights>Attribution</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c545t-58b90190298723726acd0564c20f242609c967cb56387164ce8a187dffa6eeeb3</citedby><cites>FETCH-LOGICAL-c545t-58b90190298723726acd0564c20f242609c967cb56387164ce8a187dffa6eeeb3</cites><orcidid>0000-0002-3999-1599 ; 0000-0001-6918-714X ; 0000-0003-4687-3555 ; 0000-0002-9202-9358 ; 0000-0001-6949-7244 ; 0000-0003-3778-7161</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1038/s41430-021-00895-5$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1038/s41430-021-00895-5$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>230,314,776,780,881,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/33772214$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.inrae.fr/hal-03299534$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Bailly, Mélina</creatorcontrib><creatorcontrib>Boscaro, Audrey</creatorcontrib><creatorcontrib>Pereira, Bruno</creatorcontrib><creatorcontrib>Courteix, Daniel</creatorcontrib><creatorcontrib>Germain, Natacha</creatorcontrib><creatorcontrib>Galusca, Bogdan</creatorcontrib><creatorcontrib>Boirie, Yves</creatorcontrib><creatorcontrib>Thivel, David</creatorcontrib><creatorcontrib>Verney, Julien</creatorcontrib><title>Underweight but not underfat: is fat-free mass a key factor in constitutionally thin women?</title><title>European journal of clinical nutrition</title><addtitle>Eur J Clin Nutr</addtitle><addtitle>Eur J Clin Nutr</addtitle><description>Constitutional thinness is defined as a state of severe underweight with a body mass index similar to anorectic patients (BMI < 17.5 kg/m
2
), in the absence of any eating disorders or other obvious disruptive factors impacting energy balance. The analysis of body composition is essential as a first approach to characterize constitutional thinness and might help identify new discriminating differences between constitutional thinness and anorexia nervosa. A meta-analytical approach was performed to compare body composition of constitutionally thin, anorectic, and normal-weight subjects from all available studies found in the literature. The statistical analysis was carried out on large sample sizes:
n
= 205 females with constitutional thinness,
n
= 228 normal-weight control females, and
n
= 258 females with anorexia nervosa. Despite being as underweight as anorectic patients, constitutionally thin participants paradoxically presented higher percentages of fat mass than anorectic patients (18.9%
vs
. 11.4%, respectively; SMD [95% CI]: 1.62 [1.16; 2.08]), even found in the normal healthy ranges. Constitutionally thin people, however, display as low fat-free mass as anorectic patients. These observations question the use of high-fat diets in this population and bring new insights for nutrition and/or training strategies directed toward muscle mass gain. The present results give new elements to further distinguish constitutional thinness from anorexia nervosa and reinforce the need to better investigate the atypical phenotype of constitutional thinness.</description><subject>631/443</subject><subject>692/1807</subject><subject>Anorexia</subject><subject>Anorexia Nervosa</subject><subject>Body composition</subject><subject>Body Composition - physiology</subject><subject>Body fat</subject><subject>Body Mass Index</subject><subject>Body size</subject><subject>Clinical Nutrition</subject><subject>Diagnosis</subject><subject>Eating disorders</subject><subject>Energy balance</subject><subject>Epidemiology</subject><subject>Fat-free body mass</subject><subject>Feeding and Eating Disorders</subject><subject>Female</subject><subject>Females</subject><subject>Food and Nutrition</subject><subject>Health aspects</subject><subject>High fat diet</subject><subject>Humans</subject><subject>Identification and classification</subject><subject>Internal Medicine</subject><subject>Leanness</subject><subject>Life Sciences</subject><subject>Low fat</subject><subject>Low fat diet</subject><subject>Medicine</subject><subject>Medicine & Public Health</subject><subject>Metabolic Diseases</subject><subject>Mini Review</subject><subject>Muscles</subject><subject>Nutrition</subject><subject>Phenotypes</subject><subject>Public Health</subject><subject>Statistical analysis</subject><subject>Thinness</subject><subject>Underweight</subject><subject>Weight</subject><issn>0954-3007</issn><issn>1476-5640</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp9kl9rFDEUxQdR7Fr9Aj5IQBB9mJr_mfRFlqJWWPDFPvkQstk7u6kzSU0ylv32Zru1tbJIHi6c-zsX7s1pmpcEnxDMuveZE85wiylpMe60aMWjZka4kq2QHD9uZlgL3jKM1VHzLOdLjGtT0afNEWO1UsJnzfeLsIJ0DX69KWg5FRRiQdNO6205RT6jWts-AaDR5ows-gHbqrkSE_IBuRhy8WUqPgY7DFtUNlW9jiOED8-bJ70dMry4rcfNxaeP387O28XXz1_O5ovWCS5KK7qlxkRjqjtFmaLSuhWuGziKe8qpxNppqdxSSNYpUnXoLOnUqu-tBIAlO27e7edu7GCukh9t2ppovTmfL8xOw4xqLRj_RSr7ds9epfhzglzM6LODYbAB4pQNFVhSpaRiFX39D3oZp1S3rJTEXHeEC31Pre0Axoc-lmTdbqiZy47XPbimlWoPUGsIkOwQA_S-yg_4kwN8fSsYvTtoePOXYQN2KJsch5t_yQ9Bugddijkn6O8uRrDZxcrsY2VqrMxNrIyople3p5iWI6zuLH9yVAG2B3JthTWk-1v9Z-xvAafS0Q</recordid><startdate>20211201</startdate><enddate>20211201</enddate><creator>Bailly, Mélina</creator><creator>Boscaro, Audrey</creator><creator>Pereira, Bruno</creator><creator>Courteix, Daniel</creator><creator>Germain, Natacha</creator><creator>Galusca, Bogdan</creator><creator>Boirie, Yves</creator><creator>Thivel, David</creator><creator>Verney, Julien</creator><general>Nature Publishing Group UK</general><general>Nature Publishing Group</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QP</scope><scope>7RV</scope><scope>7TK</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AN0</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB0</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M2O</scope><scope>M7P</scope><scope>MBDVC</scope><scope>NAPCQ</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope><scope>7X8</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0002-3999-1599</orcidid><orcidid>https://orcid.org/0000-0001-6918-714X</orcidid><orcidid>https://orcid.org/0000-0003-4687-3555</orcidid><orcidid>https://orcid.org/0000-0002-9202-9358</orcidid><orcidid>https://orcid.org/0000-0001-6949-7244</orcidid><orcidid>https://orcid.org/0000-0003-3778-7161</orcidid></search><sort><creationdate>20211201</creationdate><title>Underweight but not underfat: is fat-free mass a key factor in constitutionally thin women?</title><author>Bailly, Mélina ; Boscaro, Audrey ; Pereira, Bruno ; Courteix, Daniel ; Germain, Natacha ; Galusca, Bogdan ; Boirie, Yves ; Thivel, David ; Verney, Julien</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c545t-58b90190298723726acd0564c20f242609c967cb56387164ce8a187dffa6eeeb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>631/443</topic><topic>692/1807</topic><topic>Anorexia</topic><topic>Anorexia Nervosa</topic><topic>Body composition</topic><topic>Body Composition - 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Academic</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>European journal of clinical nutrition</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bailly, Mélina</au><au>Boscaro, Audrey</au><au>Pereira, Bruno</au><au>Courteix, Daniel</au><au>Germain, Natacha</au><au>Galusca, Bogdan</au><au>Boirie, Yves</au><au>Thivel, David</au><au>Verney, Julien</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Underweight but not underfat: is fat-free mass a key factor in constitutionally thin women?</atitle><jtitle>European journal of clinical nutrition</jtitle><stitle>Eur J Clin Nutr</stitle><addtitle>Eur J Clin Nutr</addtitle><date>2021-12-01</date><risdate>2021</risdate><volume>75</volume><issue>12</issue><spage>1764</spage><epage>1770</epage><pages>1764-1770</pages><issn>0954-3007</issn><eissn>1476-5640</eissn><abstract>Constitutional thinness is defined as a state of severe underweight with a body mass index similar to anorectic patients (BMI < 17.5 kg/m
2
), in the absence of any eating disorders or other obvious disruptive factors impacting energy balance. The analysis of body composition is essential as a first approach to characterize constitutional thinness and might help identify new discriminating differences between constitutional thinness and anorexia nervosa. A meta-analytical approach was performed to compare body composition of constitutionally thin, anorectic, and normal-weight subjects from all available studies found in the literature. The statistical analysis was carried out on large sample sizes:
n
= 205 females with constitutional thinness,
n
= 228 normal-weight control females, and
n
= 258 females with anorexia nervosa. Despite being as underweight as anorectic patients, constitutionally thin participants paradoxically presented higher percentages of fat mass than anorectic patients (18.9%
vs
. 11.4%, respectively; SMD [95% CI]: 1.62 [1.16; 2.08]), even found in the normal healthy ranges. Constitutionally thin people, however, display as low fat-free mass as anorectic patients. These observations question the use of high-fat diets in this population and bring new insights for nutrition and/or training strategies directed toward muscle mass gain. The present results give new elements to further distinguish constitutional thinness from anorexia nervosa and reinforce the need to better investigate the atypical phenotype of constitutional thinness.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>33772214</pmid><doi>10.1038/s41430-021-00895-5</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0002-3999-1599</orcidid><orcidid>https://orcid.org/0000-0001-6918-714X</orcidid><orcidid>https://orcid.org/0000-0003-4687-3555</orcidid><orcidid>https://orcid.org/0000-0002-9202-9358</orcidid><orcidid>https://orcid.org/0000-0001-6949-7244</orcidid><orcidid>https://orcid.org/0000-0003-3778-7161</orcidid></addata></record> |
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| ispartof | European journal of clinical nutrition, 2021-12, Vol.75 (12), p.1764-1770 |
| issn | 0954-3007 1476-5640 |
| language | eng |
| recordid | cdi_hal_primary_oai_HAL_hal_03299534v1 |
| source | MEDLINE; SpringerLink Journals - AutoHoldings |
| subjects | 631/443 692/1807 Anorexia Anorexia Nervosa Body composition Body Composition - physiology Body fat Body Mass Index Body size Clinical Nutrition Diagnosis Eating disorders Energy balance Epidemiology Fat-free body mass Feeding and Eating Disorders Female Females Food and Nutrition Health aspects High fat diet Humans Identification and classification Internal Medicine Leanness Life Sciences Low fat Low fat diet Medicine Medicine & Public Health Metabolic Diseases Mini Review Muscles Nutrition Phenotypes Public Health Statistical analysis Thinness Underweight Weight |
| title | Underweight but not underfat: is fat-free mass a key factor in constitutionally thin women? |
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