{"id":296,"date":"2007-07-29T14:31:04","date_gmt":"2007-07-29T13:31:04","guid":{"rendered":"http:\/\/resource.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/"},"modified":"2007-07-29T14:31:04","modified_gmt":"2007-07-29T13:31:04","slug":"lancet-28-jul-2007-vol-370","status":"publish","type":"post","link":"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/","title":{"rendered":"Lancet  28 Jul 2007  Vol 370"},"content":{"rendered":"<p>Cannabis is very widely used, particularly by people who later show signs of psychosis;<!--more--> as to whether use of cannabis actually causes a 40% increase in the development of psychosis, I don\u2019t suppose we shall ever be completely sure. <a href=\"http:\/\/www.thelancet.com\/journals\/lancet\/article\/PIIS0140673607611623\/abstract\">This much-discussed systematic review<\/a> is laudably cautious in its conclusions. Maybe on the whole cannabis is better avoided, and perhaps the best social policy would be regulated availability, so that people who wish can obtain the weaker varieties with due warning.<\/p>\n<p>Some years ago, Alec Logan asked me to write a column for the back pages of the BJGP, which I called <em>Flora Medica<\/em>, ending with something arcane and amusing from the lesser medical literature. I soon realised that if all else failed I could always turn to journals of occupational allergy, since anything can trigger asthma in the workplace, including boiling broccoli, as I found in one paper. Here a rigorous <a href=\"http:\/\/www.thelancet.com\/journals\/lancet\/article\/PIIS0140673607611647\/abstract\">prospective cohort study<\/a> (the European Community Respiratory Health Survey, ECRHS-II) finds that after jobs that involve exposure to smoke and chemical spills, nursing carries the highest risk for the development of asthma. But why? Do nurses boil a lot of broccoli?<\/p>\n<p><a href=\"http:\/\/www.thelancet.com\/journals\/lancet\/article\/PIIS0140673607611659\/abstract\">This seminar<\/a> points out that chronic myeloid leukaemia was the first cancer to yield to genetically tailored therapy \u2013 imatinib. It is a rare disease, occurring in a scattering of mostly elderly people, the great majority of whom can be cured using this drug. If one of them happens to be a patient of yours, this is the place to read about it.<\/p>\n<p>Although in-vitro fertilisation has now been carried out for 30 years, we are still learning about its <a href=\"http:\/\/www.thelancet.com\/journals\/lancet\/article\/PIIS0140673607604565\/abstract\">long-term outcomes<\/a>, especially as the largest cohort has yet to reach adulthood. In the short term, multiple birth provides the biggest range of hazards. The leading congenital abnormality associated with assisted reproduction is urogenital malformation in boys, but there are wide confidence intervals for the overall risk of malformation, and the risk is unlikely to be more than 30% above unassisted gestation. As far as social discord within families goes, there is no increase at all, despite the emotional strain and financial cost which IVF commonly brings.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cannabis is very widely used, particularly by people who later show signs of psychosis; [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/\">More&#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":38363,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[111],"tags":[],"class_list":["post-296","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-richard-lehmans-weekly-review-of-medical-journals"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Lancet 28 Jul 2007 Vol 370 - The BMJ<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lancet 28 Jul 2007 Vol 370 - The BMJ\" \/>\n<meta property=\"og:description\" content=\"Cannabis is very widely used, particularly by people who later show signs of psychosis; [...]More...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/\" \/>\n<meta property=\"og:site_name\" content=\"The BMJ\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/bmjdotcom\/\" \/>\n<meta property=\"article:published_time\" content=\"2007-07-29T13:31:04+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.bmj.com\/bmj\/files\/2017\/02\/richard-lehman.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"540\" \/>\n\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"BMJ\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@bmj_latest\" \/>\n<meta name=\"twitter:site\" content=\"@bmj_latest\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"BMJ\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/2007\\\/07\\\/29\\\/lancet-28-jul-2007-vol-370\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/2007\\\/07\\\/29\\\/lancet-28-jul-2007-vol-370\\\/\"},\"author\":{\"name\":\"BMJ\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/#\\\/schema\\\/person\\\/ba3da426ed20e8f1d933ca367d8216fe\"},\"headline\":\"Lancet 28 Jul 2007 Vol 370\",\"datePublished\":\"2007-07-29T13:31:04+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/2007\\\/07\\\/29\\\/lancet-28-jul-2007-vol-370\\\/\"},\"wordCount\":359,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/2007\\\/07\\\/29\\\/lancet-28-jul-2007-vol-370\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/files\\\/2017\\\/02\\\/richard-lehman.jpg\",\"articleSection\":[\"Richard Lehman's weekly review of medical journals\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/2007\\\/07\\\/29\\\/lancet-28-jul-2007-vol-370\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/2007\\\/07\\\/29\\\/lancet-28-jul-2007-vol-370\\\/\",\"url\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/2007\\\/07\\\/29\\\/lancet-28-jul-2007-vol-370\\\/\",\"name\":\"Lancet 28 Jul 2007 Vol 370 - The BMJ\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/2007\\\/07\\\/29\\\/lancet-28-jul-2007-vol-370\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/2007\\\/07\\\/29\\\/lancet-28-jul-2007-vol-370\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/files\\\/2017\\\/02\\\/richard-lehman.jpg\",\"datePublished\":\"2007-07-29T13:31:04+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/2007\\\/07\\\/29\\\/lancet-28-jul-2007-vol-370\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/2007\\\/07\\\/29\\\/lancet-28-jul-2007-vol-370\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/2007\\\/07\\\/29\\\/lancet-28-jul-2007-vol-370\\\/#primaryimage\",\"url\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/files\\\/2017\\\/02\\\/richard-lehman.jpg\",\"contentUrl\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/files\\\/2017\\\/02\\\/richard-lehman.jpg\",\"width\":540,\"height\":350},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/2007\\\/07\\\/29\\\/lancet-28-jul-2007-vol-370\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Lancet 28 Jul 2007 Vol 370\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/#website\",\"url\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/\",\"name\":\"The BMJ\",\"description\":\"Helping doctors make better decisions.\",\"publisher\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/#organization\",\"name\":\"The BMJ\",\"url\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/files\\\/2018\\\/05\\\/The-BMJ-logo.jpg\",\"contentUrl\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/files\\\/2018\\\/05\\\/The-BMJ-logo.jpg\",\"width\":852,\"height\":568,\"caption\":\"The BMJ\"},\"image\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/bmjdotcom\\\/\",\"https:\\\/\\\/x.com\\\/bmj_latest\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/#\\\/schema\\\/person\\\/ba3da426ed20e8f1d933ca367d8216fe\",\"name\":\"BMJ\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/b4d8f39281bcae118348a1c027347b8e53b82d42520e774a8b50dd9a6ac6c01d?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/b4d8f39281bcae118348a1c027347b8e53b82d42520e774a8b50dd9a6ac6c01d?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/b4d8f39281bcae118348a1c027347b8e53b82d42520e774a8b50dd9a6ac6c01d?s=96&d=mm&r=g\",\"caption\":\"BMJ\"},\"sameAs\":[\"https:\\\/\\\/blogs.bmj.com\\\/\"],\"url\":\"https:\\\/\\\/blogs.bmj.com\\\/bmj\\\/author\\\/admin\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Lancet 28 Jul 2007 Vol 370 - The BMJ","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/","og_locale":"en_US","og_type":"article","og_title":"Lancet 28 Jul 2007 Vol 370 - The BMJ","og_description":"Cannabis is very widely used, particularly by people who later show signs of psychosis; [...]More...","og_url":"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/","og_site_name":"The BMJ","article_publisher":"https:\/\/www.facebook.com\/bmjdotcom\/","article_published_time":"2007-07-29T13:31:04+00:00","og_image":[{"width":540,"height":350,"url":"https:\/\/blogs.bmj.com\/bmj\/files\/2017\/02\/richard-lehman.jpg","type":"image\/jpeg"}],"author":"BMJ","twitter_card":"summary_large_image","twitter_creator":"@bmj_latest","twitter_site":"@bmj_latest","twitter_misc":{"Written by":"BMJ","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/#article","isPartOf":{"@id":"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/"},"author":{"name":"BMJ","@id":"https:\/\/blogs.bmj.com\/bmj\/#\/schema\/person\/ba3da426ed20e8f1d933ca367d8216fe"},"headline":"Lancet 28 Jul 2007 Vol 370","datePublished":"2007-07-29T13:31:04+00:00","mainEntityOfPage":{"@id":"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/"},"wordCount":359,"commentCount":0,"publisher":{"@id":"https:\/\/blogs.bmj.com\/bmj\/#organization"},"image":{"@id":"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/#primaryimage"},"thumbnailUrl":"https:\/\/blogs.bmj.com\/bmj\/files\/2017\/02\/richard-lehman.jpg","articleSection":["Richard Lehman's weekly review of medical journals"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/","url":"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/","name":"Lancet 28 Jul 2007 Vol 370 - The BMJ","isPartOf":{"@id":"https:\/\/blogs.bmj.com\/bmj\/#website"},"primaryImageOfPage":{"@id":"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/#primaryimage"},"image":{"@id":"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/#primaryimage"},"thumbnailUrl":"https:\/\/blogs.bmj.com\/bmj\/files\/2017\/02\/richard-lehman.jpg","datePublished":"2007-07-29T13:31:04+00:00","breadcrumb":{"@id":"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/#primaryimage","url":"https:\/\/blogs.bmj.com\/bmj\/files\/2017\/02\/richard-lehman.jpg","contentUrl":"https:\/\/blogs.bmj.com\/bmj\/files\/2017\/02\/richard-lehman.jpg","width":540,"height":350},{"@type":"BreadcrumbList","@id":"https:\/\/blogs.bmj.com\/bmj\/2007\/07\/29\/lancet-28-jul-2007-vol-370\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/blogs.bmj.com\/bmj\/"},{"@type":"ListItem","position":2,"name":"Lancet 28 Jul 2007 Vol 370"}]},{"@type":"WebSite","@id":"https:\/\/blogs.bmj.com\/bmj\/#website","url":"https:\/\/blogs.bmj.com\/bmj\/","name":"The BMJ","description":"Helping doctors make better decisions.","publisher":{"@id":"https:\/\/blogs.bmj.com\/bmj\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/blogs.bmj.com\/bmj\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/blogs.bmj.com\/bmj\/#organization","name":"The BMJ","url":"https:\/\/blogs.bmj.com\/bmj\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/blogs.bmj.com\/bmj\/#\/schema\/logo\/image\/","url":"https:\/\/blogs.bmj.com\/bmj\/files\/2018\/05\/The-BMJ-logo.jpg","contentUrl":"https:\/\/blogs.bmj.com\/bmj\/files\/2018\/05\/The-BMJ-logo.jpg","width":852,"height":568,"caption":"The BMJ"},"image":{"@id":"https:\/\/blogs.bmj.com\/bmj\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/bmjdotcom\/","https:\/\/x.com\/bmj_latest"]},{"@type":"Person","@id":"https:\/\/blogs.bmj.com\/bmj\/#\/schema\/person\/ba3da426ed20e8f1d933ca367d8216fe","name":"BMJ","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/b4d8f39281bcae118348a1c027347b8e53b82d42520e774a8b50dd9a6ac6c01d?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/b4d8f39281bcae118348a1c027347b8e53b82d42520e774a8b50dd9a6ac6c01d?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/b4d8f39281bcae118348a1c027347b8e53b82d42520e774a8b50dd9a6ac6c01d?s=96&d=mm&r=g","caption":"BMJ"},"sameAs":["https:\/\/blogs.bmj.com\/"],"url":"https:\/\/blogs.bmj.com\/bmj\/author\/admin\/"}]}},"_links":{"self":[{"href":"https:\/\/blogs.bmj.com\/bmj\/wp-json\/wp\/v2\/posts\/296","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.bmj.com\/bmj\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.bmj.com\/bmj\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.bmj.com\/bmj\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.bmj.com\/bmj\/wp-json\/wp\/v2\/comments?post=296"}],"version-history":[{"count":0,"href":"https:\/\/blogs.bmj.com\/bmj\/wp-json\/wp\/v2\/posts\/296\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.bmj.com\/bmj\/wp-json\/wp\/v2\/media\/38363"}],"wp:attachment":[{"href":"https:\/\/blogs.bmj.com\/bmj\/wp-json\/wp\/v2\/media?parent=296"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.bmj.com\/bmj\/wp-json\/wp\/v2\/categories?post=296"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.bmj.com\/bmj\/wp-json\/wp\/v2\/tags?post=296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}