“Ch\u1ed3ng em giao thi\u1ec7p r\u1ed9ng, \u0111\u1ecbnh s\u1eafm th\u00eam m\u1ed9t m\u00e1y \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng. Em \u0111\u1ecdc b\u00e1o th\u1ea5y n\u00f3i vi\u1ec7c s\u1eed d\u1ee5ng m\u00e1y n\u00e0y nhi\u1ec1u c\u00f3 th\u1ec3 g\u00e2y ung th\u01b0 n\u00e3o, n\u00ean ch\u01b0a mu\u1ed1n cho anh \u1ea5y mua. Xin cho ch\u00fang em m\u1ed9t l\u1eddi khuy\u00ean”.<\/p>\n\n\n\n
Sau khi m\u00e1y \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng (\u0110TD\u0110) ra \u0111\u1eddi \u00edt l\u00e2u, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 nghi ng\u1edd v\u1ec1 s\u1ef1 nguy hi\u1ec3m c\u1ee7a n\u00f3, v\u00ec n\u00f3 ph\u00e1t ra c\u00e1c t\u1ea7n s\u1ed1 radio kh\u00f4ng l\u1ee3i cho c\u01a1 th\u1ec3.<\/p>\n\n\n\n
Gi\u1eefa n\u0103m 1977, qua th\u1ef1c nghi\u1ec7m tr\u00ean chu\u1ed9t, ng\u01b0\u1eddi ta ph\u00e1t hi\u1ec7n ra t\u00ednh d\u1ec5 g\u00e2y ung th\u01b0 b\u1ea1ch huy\u1ebft c\u1ee7a \u0110TD\u0110, nh\u01b0ng ch\u01b0a th\u1ea5y bi\u1ec3u hi\u1ec7n \u1edf ng\u01b0\u1eddi.<\/p>\n\n\n\n
M\u1ed9t nghi\u00ean c\u1ee9u \u1edf Australia n\u0103m 1998 cho th\u1ea5y, t\u1eeb n\u0103m 1982, t\u1ef7 l\u1ec7 ung th\u01b0 n\u00e3o t\u0103ng 50% \u1edf nam v\u00e0 63% \u1edf n\u1eef, nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 l\u00e0 do s\u1eed d\u1ee5ng \u0110TD\u0110. N\u01b0\u1edbc n\u00e0y bu\u1ed9c ph\u1ea3i tri\u1ec3n khai vi\u1ec7c nghi\u00ean c\u1ee9u v\u1ea5n \u0111\u1ec1 \u0110TD\u0110 v\u1edbi Ph\u00e1p, Italy, Anh, Canada v\u00e0 c\u00e1c n\u01b0\u1edbc B\u1eafc \u00c2u.<\/p>\n\n\n\n
Cu\u1ed1i n\u0103m 1998, Anh c\u00f4ng b\u1ed1 m\u1ed9t nghi\u00ean c\u1ee9u cho th\u1ea5y, \u0110TD\u0110 l\u00e0m gi\u1ea3m tr\u00ed nh\u1edb, g\u00e2y tr\u1edf ng\u1ea1i cho vi\u1ec7c t\u1eadp trung t\u01b0 t\u01b0\u1edfng v\u00e0 c\u1ea3m nh\u1eadn kh\u00f4ng gian, do t\u00e1c \u0111\u1ed9ng c\u1ee7a tr\u01b0\u1eddng \u0111i\u1ec7n t\u1eeb m\u00e0 \u0110TD\u0110 ph\u00e1t ra. \u0110\u1ea7u n\u0103m 1999, \u1edf \u0110\u1ee9c, c\u00e1c nh\u00e0 khoa h\u1ecdc ph\u00e1t hi\u1ec7n \u0110TD\u0110 t\u00e1c \u0111\u1ed9ng l\u00ean huy\u1ebft \u00e1p c\u1ee7a ng\u01b0\u1eddi s\u1eed d\u1ee5ng 5 l\u1ea7n\/24 gi\u1edd, m\u1ed7i l\u1ea7n 35 ph\u00fat li\u00ean t\u1ee5c.<\/p>\n\n\n\n
Theo m\u1ed9t nghi\u00ean c\u1ee9u \u1edf Ph\u00e1p, c\u00f9ng v\u1edbi s\u1ef1 gia t\u0103ng s\u1ed1 ng\u01b0\u1eddi s\u1eed d\u1ee5ng \u0110TD\u0110, c\u00f3 m\u1ed9t s\u1ef1 gia t\u0103ng t\u1ef7 l\u1ec7 ung th\u01b0 n\u00e3o: n\u0103m 1975 c\u00f3 2.300 tr\u01b0\u1eddng h\u1ee3p, n\u0103m 1995 l\u00ean t\u1edbi 4.700. C\u00e1c nh\u00e0 khoa h\u1ecdc Ph\u00e1p c\u00f2n \u0111\u1eb7t v\u1ea5n \u0111\u1ec1 li\u1ec7u c\u00f3 n\u00ean ghi tr\u00ean \u0110TD\u0110 d\u00f2ng ch\u1eef c\u1ea3nh b\u00e1o “T\u00e1c h\u1ea1i nghi\u00eam tr\u1ecdng \u0111\u1ebfn s\u1ee9c kh\u1ecfe” hay kh\u00f4ng. Gi\u1eefa n\u0103m 2001, B\u1ed9 y t\u1ebf Ph\u00e1p \u0111\u01b0a \u0111\u01a1n ra khuy\u1ebfn c\u00e1o n\u00ean th\u1eadn tr\u1ecdng khi s\u1eed d\u1ee5ng \u0110TD\u0110: – Kh\u00f4ng n\u00f3i chuy\u1ec7n l\u00e2u khi m\u00e1y nghe kh\u00f4ng r\u00f5 (s\u1ee9c thu k\u00e9m, do \u0111\u00f3 m\u00e1y ph\u1ea3i t\u0103ng c\u00f4ng su\u1ea5t). – S\u1eed d\u1ee5ng lo\u1ea1i m\u00e1y c\u00f3 che tai (\u0111\u1ec3 b\u1edbt n\u0103ng l\u01b0\u1ee3ng h\u1ea5p thu qua da). – Kh\u00f4ng \u0111\u1eb7t m\u00e1y v\u00e0o nh\u1eefng v\u00f9ng nh\u1ea1y c\u1ea3m (thi\u1ebfu ni\u00ean hay nh\u00e9t m\u00e1y v\u00e0o t\u00fai qu\u1ea7n, thai ph\u1ee5 th\u00ec nh\u00e9t tr\u01b0\u1edbc b\u1ee5ng, g\u1ea7n c\u01a1 quan sinh d\u1ee5c). – H\u1ea1n ch\u1ebf tr\u1ebb em d\u00f9ng \u0110TD\u0110.<\/p>\n\n\n\n
M\u1ed9t th\u1ef1c t\u1ebf hi\u1ec3n nhi\u00ean l\u00e0, do l\u1ee3i nhu\u1eadn \u0111\u1eb7c bi\u1ec7t cao, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u0110TD\u0110 \u0111\u00e3 v\u1ed9i v\u00e3 tung c\u00e1c s\u1ea3n ph\u1ea9m m\u1edbi ra th\u1ecb tr\u01b0\u1eddng m\u00e0 ch\u01b0a nghi\u00ean c\u1ee9u th\u1eadt k\u1ef9 c\u00e0ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n m\u1eb7t nguy h\u1ea1i c\u1ee7a n\u00f3.<\/p>\n\n\n\n
M\u1eb7c d\u00f9 cho \u0111\u1ebfn nay, khoa h\u1ecdc v\u1eabn ch\u01b0a kh\u1eb3ng \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0110TD\u0110 c\u00f3 g\u00e2y ung th\u01b0 hay kh\u00f4ng, nh\u01b0ng tr\u01b0\u1edbc nh\u1eefng l\u1eddi c\u1ea3nh b\u00e1o c\u1ee7a c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u, ng\u01b0\u1eddi ta \u0111\u00e3 ch\u1ebf t\u1ea1o nh\u1eefng \u0110TD\u0110 c\u00f3 tai nghe \u0111\u1ec3 tr\u00e1nh t\u00e1c \u0111\u1ed9ng l\u00ean n\u00e3o.<\/p>\n\n\n\n
C\u00f2n chuy\u1ec7n gia \u0111\u00ecnh c\u00e1c em c\u1ee5 th\u1ec3 ra sao, t\u1ef1 c\u00e1c em ph\u1ea3i x\u1eed l\u00fd cho \u0111\u00fang m\u1ee9c. Hy v\u1ecdng r\u1eb1ng nh\u1eefng s\u1ed1 li\u1ec7u khoa h\u1ecdc n\u00eau tr\u00ean c\u00f3 th\u1ec3 gi\u00fap cho \u0111\u1ea7u \u00f3c con ng\u01b0\u1eddi t\u1ec9nh t\u00e1o ra, \u0111\u1ec3 tr\u00e1nh vi\u1ec7c l\u1ea1m d\u1ee5ng \u0110TD\u0110.<\/p>\n","protected":false},"excerpt":{"rendered":"
“Ch\u1ed3ng em giao thi\u1ec7p r\u1ed9ng, \u0111\u1ecbnh s\u1eafm th\u00eam m\u1ed9t m\u00e1y \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng. Em \u0111\u1ecdc b\u00e1o th\u1ea5y n\u00f3i vi\u1ec7c s\u1eed d\u1ee5ng m\u00e1y n\u00e0y nhi\u1ec1u c\u00f3 th\u1ec3 g\u00e2y ung th\u01b0 n\u00e3o, n\u00ean ch\u01b0a mu\u1ed1n cho anh \u1ea5y mua. Xin cho ch\u00fang em m\u1ed9t l\u1eddi khuy\u00ean”. Sau khi m\u00e1y \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng (\u0110TD\u0110) ra \u0111\u1eddi […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[21],"tags":[],"class_list":["post-11797","post","type-post","status-publish","format-standard","hentry","category-y-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/11797","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=11797"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/11797\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=11797"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=11797"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=11797"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}