KIDS who sleep with the light on could risk leukaemia, parents were公仔箱論壇' ?+ o5 t8 [$ f( I7 K
warned yesterday.
8 C4 |8 A6 A# T3 ^. V% d" ?; Xtvb now,tvbnow,bttvb
! ^& ?$ }* [0 H# e: m4 R: Y& L$ C3 ctvb now,tvbnow,bttvbScientists have found the body needs darkness to produce a chemical* s) n* E+ ^: Q/ E, o* V0 s, I
that fights cancer.
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# O/ x5 ?, J. Y" l2 }& v* KEven switching the light on for the toilet, staying up late, travellingtvb now,tvbnow,bttvb7 F2 i* i. i/ E7 x! L& G" `0 U
across time zones, or the light from street lamps can stop enoughwww3.tvboxnow.com. z5 G( c4 ?) R1 R& Z# F
melatonin being made, they say.
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* [% D. F: P8 f8 K; {( M6 g% n% gtvb now,tvbnow,bttvbThe body needs the chemical to prevent damage to DNA and its absence! d2 l, |/ d' \& a9 T% @4 ]0 ?; ~
stops fatty acids reaching tumours and preventing them growing. Texas公仔箱論壇( U1 J- r9 C* {* n
University Prof Russell Reiter, who led the research, said: 'Once you
. e# A& _3 q5 r( otvb now,tvbnow,bttvbgo to bed you should not even switch the light on for a minute.
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% M7 _) ]; T- g! s% mtvb now,tvbnow,bttvb'Your brain immediately recognises the light as day and melatonin
0 O. f& }4 N: P" m/ N: a' Ilevels drop.'tvb now,tvbnow,bttvb3 j* u! n7 x" w4 A* E
' u4 ]- \" `. o% CRates of childhood leukaemia have doubled in the past 40 years.www3.tvboxnow.com( O) X: Y( T" {3 h
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About 500 youngsters under 15 are diagnosed with the disease each year and around 100 die. A conference on childhood leukaemia in London yesterday公仔箱論壇2 L6 c4 _+ v; E$ Y- L
heard that people were being subjected to more light at night thanwww3.tvboxnow.com% x6 f0 G5 _& S
ever.., P0 ]# }8 g9 Q ?& c# l
6 \5 R, R3 X/ [9 T' [$ e公仔箱論壇This suppressed the production of melatonin which normally happens between 9pm and 8am.& v/ b0 q) @) K2 J
9 E; L" Q! B% F# v2 h* b9 HPast research has shown those most affected, like shift workers, had
: e4 ^' V" {7 s; i4 m( {: {higher levels of breast cancer.; ^" D* l+ {# U* N
+ S1 T0 b8 @ d( i5 K3 ~公仔箱論壇Blind people, who are not vulnerable to fluctuations of melatonin, have
# u6 G7 l5 V( E# I: _lower rates of cancer, it was found.
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2 i/ p" H) t6 j+ a0 [8 D0 Twww3.tvboxnow.comParents are advised to use dim red or yellow bulbs if their youngsters are scared of the dark.% Z* U2 w; e9 c: D8 T
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發表於 2008-8-1 11:02 AM
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