August 2017 May 2017 - Page 42

40 HEALTH talk Doctor’s notes Dr Rik Heymans is a general practitioner in Nerja and writes on developments in the world of medicine Lack of sleep and weight gain There appears to be a relationship between sleep restriction, or the lack of sleep, and weight gain. In observational studies, as sleep duration declines, the likelihood of weight gain and obesity increases. The onset of the current obesity epidemic is mirrored by a reduction in total sleep time per night at the population level. In 2013, a paper published in the Proceedings of the National Academy of Sciences reported the mechanisms responsible for the link. The authors studied 16 adults for two weeks. All participants lived in an experimental laboratory where caloric intake and sleep duration were rigidly monitored and controlled. They were forced to limit their sleep to five hours per night for five nights, after which they spent several nights catching up at nine hours of sleep per night. The researchers []\XYY\Y[[ܙX\B[[[\Hۜ[\[ۋ[ܝ[][KXX˜\[]YH\[Z\[ܚX[ZK\\H\B]]]H[\H[[KYX[[ZYZ[\X\[[[ܙX\YH\[YHو\Y]H[Z\YX[ˈ[ܚX[ZH[۝[]][\Y[][ݙ\[YHHYXHۙYZY[\[[[]]YY]XX]K]]ܜوHX[YHX\Y[H\[8'Y\8'B\Y\Y\\][۸$ZYZ[[][ۜ\ [B[[XY[X[\وܛX[ZY\HYYY[HX܂]H^\ˈۈHXۙ[\^\وH^\[Y[ Z\[ܚX[ZH\YXYH L KۈH\[Y^\^H\HXHX]Y[H]]\X[ۋY\\YX\\YXXY]\[ܘ\K\[[ܚX\X[ۋH\[YHو]]HY\H[ܙX\Y Y][ۘ[[][ۜ\]Y[[ܚXœ\X[ۈ[\[H[ܚ[HX\\\H[YX[ۜ\Y[\[\[[ܙ^[ܛ[ۙ\XYX\Y]X\H[۝X]HœܘYHو]ˈH]]ܜو\YHٙ\[]][ۘ\H[ܞH^Z[Z\[[Έ[X[˜Y\YX[\[\H\][ۈۙ][ۜB[[[ܙH[YH]H\Y]XX]K[[ˈH\H[ZH[[X[X\]K\[\HY]XX]H]]\[ [ۙ]X\]H[\\Kܛܛ[ۙB[\Xܙ]Y\[\\\[\[ܙX\\ŠYX[[]XY\[ܙHYX[ZHۙH\ KX][X[\\[Y\۝[Z]H\[Z\Y \˜ܚ]X[[[ܚX[ZH\ܛX[ [Hۛ]]\][[ܙH[\ܝ[[[\H[[H\Y]]KHۙ][ۜ[\YۈHYH\X\[ [\B[ZHYXY L Hو\[[JH\H]X[ܙH]\B[[[Y]˂[ ܈HZ[XY]HH]Y]]H[\B[[HYY][H[ۜY\[ܙX\[[Y\[Yx)]X[X[][ۈYYX][ۂڙXYY][YHX]Y[܈]Y[]]X[X[][ۈ]H]\\\وܘ[[XY[[˜\X\H[ܙH YYX]H[\\YB\Y\\[Xܙ[H]\[[\\وB[[Y[X[[X[X[وHܘ[[XY[[ˈ BTTHX[ [[ N ]Y[KHY\Y \^X[\ۙHوH]\[XY[[˂܈H\[[[\\HYH\Y\[X]\܂X]Y[[\\H\H\\HX]Y[[\[X]YYH^X[Y\\Yۈ[TTH]Y[˂[Z\[[\\X\YX\ K M[SPB\[K^HYHT]Y[܈HYYX[و KYX\]Y[ [ LKH\X\\[] ݙ\[ H\و][\][ۂYY\YۚYX[H]Y[X]Y[ܛ\[Y][YZ\[ۜ܈YY[؛[\[Y\ۈ\^X[[HX[8&\[X\H]Y\\^X[YHYۚYX[Y[YHݙ\\\[܈][[ۂوH܈\[ZX[X\K\[\X]H[B]\K[\\X]Y]YۚYX[H]\XZ܂YY˂Hو][\][ۜYH\X][ۜوH\HقHY]\YY M܈\^X[\\H[ K L܈\\[\\K[]\X[H\\XH\B[Y\[KY\\Y[\][\HوY\\X\˜\]ZXHX][ۋX[XZ\܈YX[]܈[\[][ۋ\XX\\K܈[[\[][ۋH8'[[Y[X[8'H]\Z[[و[Z\[[\\\HوHYH[X[و\\[[Y[S[ۚ]ܚ[\H[HX[ۈوHP&\˜[X[ [H[[\\\^X[\YY] K \^H[\\[] H\^KHXH܈H]\Y\]\ۜY\XH\\H[]\KXZ[]][[ܙHX[]\H]Y[ݙ\\H]™Y H\\HH؝[\[Y]و\\X][ۜ˜[]\ۛ\˂HRVSPS˜[\X\ \B[MH L BHVH M