Smoking remains associated with education after controlling for social background and genetic factors in a study of 18 twin cohorts
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Smoking remains associated with education after controlling for social background and genetic factors in a study of 18 twin cohorts. / Silventoinen, Karri; Piirtola, Maarit; Jelenkovic, Aline; Sund, Reijo; Tarnoki, Adam D.; Tarnoki, David L.; Medda, Emanuela; Nisticò, Lorenza; Toccaceli, Virgilia; Honda, Chika; Inui, Fujio; Tomizawa, Rie; Watanabe, Mikio; Sakai, Norio; Gatz, Margaret; Butler, David A.; Lee, Jooyeon; Lee, Soo Ji; Sung, Joohon; Franz, Carol E.; Kremen, William S.; Lyons, Michael J.; Derom, Catherine A.; Vlietinck, Robert F.; Loos, Ruth J.F.; Tynelius, Per; Rasmussen, Finn; Martin, Nicholas G.; Medland, Sarah E.; Montgomery, Grant W.; Brandt, Ingunn; Nilsen, Thomas S.; Harris, Jennifer R.; Tyler, Jessica; Hopper, John L.; Magnusson, Patrik K.E.; Pedersen, Nancy L.; Dahl Aslan, Anna K.; Ordoñana, Juan R.; Sánchez-Romera, Juan F.; Colodro-Conde, Lucia; Rebato, Esther; Zhang, Dongfeng; Pang, Zengchang; Tan, Qihua; Silberg, Judy L.; Maes, Hermine H.; Boomsma, Dorret I.; Sørensen, Thorkild I.A.; Korhonen, Tellervo; Kaprio, Jaakko.
In: Scientific Reports, Vol. 12, No. 1, 13148, 2022.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Smoking remains associated with education after controlling for social background and genetic factors in a study of 18 twin cohorts
AU - Silventoinen, Karri
AU - Piirtola, Maarit
AU - Jelenkovic, Aline
AU - Sund, Reijo
AU - Tarnoki, Adam D.
AU - Tarnoki, David L.
AU - Medda, Emanuela
AU - Nisticò, Lorenza
AU - Toccaceli, Virgilia
AU - Honda, Chika
AU - Inui, Fujio
AU - Tomizawa, Rie
AU - Watanabe, Mikio
AU - Sakai, Norio
AU - Gatz, Margaret
AU - Butler, David A.
AU - Lee, Jooyeon
AU - Lee, Soo Ji
AU - Sung, Joohon
AU - Franz, Carol E.
AU - Kremen, William S.
AU - Lyons, Michael J.
AU - Derom, Catherine A.
AU - Vlietinck, Robert F.
AU - Loos, Ruth J.F.
AU - Tynelius, Per
AU - Rasmussen, Finn
AU - Martin, Nicholas G.
AU - Medland, Sarah E.
AU - Montgomery, Grant W.
AU - Brandt, Ingunn
AU - Nilsen, Thomas S.
AU - Harris, Jennifer R.
AU - Tyler, Jessica
AU - Hopper, John L.
AU - Magnusson, Patrik K.E.
AU - Pedersen, Nancy L.
AU - Dahl Aslan, Anna K.
AU - Ordoñana, Juan R.
AU - Sánchez-Romera, Juan F.
AU - Colodro-Conde, Lucia
AU - Rebato, Esther
AU - Zhang, Dongfeng
AU - Pang, Zengchang
AU - Tan, Qihua
AU - Silberg, Judy L.
AU - Maes, Hermine H.
AU - Boomsma, Dorret I.
AU - Sørensen, Thorkild I.A.
AU - Korhonen, Tellervo
AU - Kaprio, Jaakko
N1 - Publisher Copyright: © 2022, The Author(s).
PY - 2022
Y1 - 2022
N2 - We tested the causality between education and smoking using the natural experiment of discordant twin pairs allowing to optimally control for background genetic and childhood social factors. Data from 18 cohorts including 10,527 monozygotic (MZ) and same-sex dizygotic (DZ) twin pairs discordant for education and smoking were analyzed by linear fixed effects regression models. Within twin pairs, education levels were lower among the currently smoking than among the never smoking co-twins and this education difference was larger within DZ than MZ pairs. Similarly, education levels were higher among former smoking than among currently smoking co-twins, and this difference was larger within DZ pairs. Our results support the hypothesis of a causal effect of education on both current smoking status and smoking cessation. However, the even greater intra-pair differences within DZ pairs, who share only 50% of their segregating genes, provide evidence that shared genetic factors also contribute to these associations.
AB - We tested the causality between education and smoking using the natural experiment of discordant twin pairs allowing to optimally control for background genetic and childhood social factors. Data from 18 cohorts including 10,527 monozygotic (MZ) and same-sex dizygotic (DZ) twin pairs discordant for education and smoking were analyzed by linear fixed effects regression models. Within twin pairs, education levels were lower among the currently smoking than among the never smoking co-twins and this education difference was larger within DZ than MZ pairs. Similarly, education levels were higher among former smoking than among currently smoking co-twins, and this difference was larger within DZ pairs. Our results support the hypothesis of a causal effect of education on both current smoking status and smoking cessation. However, the even greater intra-pair differences within DZ pairs, who share only 50% of their segregating genes, provide evidence that shared genetic factors also contribute to these associations.
U2 - 10.1038/s41598-022-17536-x
DO - 10.1038/s41598-022-17536-x
M3 - Journal article
C2 - 35909142
AN - SCOPUS:85135182674
VL - 12
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
IS - 1
M1 - 13148
ER -
ID: 315979189