Your healthcare news library

Archive for September, 2013

abc Notes

screen480x480

abcNotes was designed to become your stylish and highly customizable, functional and easy to use assistant in taking notes and managing To Do lists. abcNotes is an awesome note taking application! It takes advantage of unique iOS devices touchscreen preserving realistic look & feel of paper sticky notes.

abc Notes – Checklist & Sticky Note Application for iPhone and iPad (share, email and synch your lists, memos, projects and school notebooks)

HINT: To make a checklist note: Double tap the note to edit it. Tap the Note Properties button (blue one with tools icon). Find the checklist switch next to text alignment toggles. The total number of unchecked items is displayed as badge on abcNotes icon.

BEAUTIFUL APPEARANCE:

• 88 backgrounds to choose from

• 45 note skins

• 27 badge designs & 115 icons

EXTREMELY FUNCTIONAL:

• 15 virtual desktops

• Scale, rotate and drag notes

• Easy to edit, duplicate, move between desktops

• Supports any iPad orientation

SHARE YOUR NOTES:

• Email notes and desktops

• Copy note image to any application

• Synchronize notes between iOS devices

• Save notes as image and place to lock or home screen

No more boring note lists – abcNotes brings you the ability to make REAL notes on your iPhone, iPad or iPod Touch. Put everything you need to remember into abcNotes! View you notes the way you want! Rotate your abcNotes to any angle you wish!

abcNotes is great for shopping lists, student class notebook, to record lecture and interview notes or to track projects, recordings and more tasks at home, school and university (class or homework).

via abc Notes – Checklist & Sticky Note Application for iPhone, iPad and iPod touch on the iTunes App Store.

Open-Face Bacon-and-Egg Sandwiches with Arugula

open-face-bacon-and-egg-sandwiches-with-arugula
INGREDIENTS

5 bacon slices, halved crosswise

1 4-inch square ciabatta or focaccia bread, halved horizontally

3 tablespoons olive oil, divided

4 large thin tomato slices

1 small shallot, chopped

1/2 tablespoon white wine vinegar

1 cup (packed) arugula

2 large eggs

Parmesan cheese shavings

PREPARATION

 

  • Cook bacon in heavy large skillet over medium-high heat until brown and crisp; transfer to paper towels to drain.
  • Wipe out skillet. Brush cut sides of bread with 1 tablespoon oil. Place bread, cut sides down, in skillet. Cook over medium heat until golden, about 3 minutes. Place 1 bread square, golden side up, on each of 2 plates. Top each with half of bacon, then 2 tomato slices.
  • Whisk 1 tablespoon oil, shallot, and vinegar in medium bowl to blend. Season dressing with salt and pepper. Add arugula and toss to coat.
  • Heat remaining 1 tablespoon oil in same skillet over medium heat. Crack eggs into skillet. Sprinkle with salt and pepper. Cook until whites are set and yolks are cooked as desired. Top each bread stack with egg, then arugula and cheese.

via Open-Face Bacon-and-Egg Sandwiches with Arugula – Bon Appétit.

治慢性咽喉炎妙方 白糖醃海帶改善

42746
喉嚨常有卡痰、咽喉腫痛的感覺,可能是有慢性咽喉炎的徵兆。

雖然沒有感冒,但是常常覺得咽喉腫痛、乾癢不已,或是有痰卡在喉嚨、想咳又咳不出的感覺、聲音莫名變沙啞?上述症狀都可能是患有慢性咽炎的徵兆,慢性咽喉炎不容易完全治好,飲食上需要謹慎注意的地方,例如多吃維生素C食物、以清淡為主。另外,大陸家醫科醫學博士朱曉平分享實用偏方「白糖醃海帶」,可以調節體質、改善慢性咽喉炎。

改善慢性咽炎 生活飲食改善

愛吃麻辣鍋、炸物、煎得脆脆的食物或是醃製類食品,其實這些都是傷害喉嚨的食物,如果長期養成這樣重口味、刺激性的飲食習慣,久而久之咽喉也會受到損害,若再加上過度使用聲帶,慢性咽炎就更容易找上門。

此外,病毒或細菌感染、空氣汙染、吸菸,或是患有胃食道逆流疾病或是嚴重鼻塞的人,也都有可能造成慢性咽炎。要治療慢性咽炎,除了微生物感染要使用抗生素治療以外,基本上主要從生活方式及飲食調理著手,就能緩解。

海帶富含豐富營養素,與白糖醃漬可做為治療慢性咽喉炎的偏方。

海帶富含豐富營養素,與白糖醃漬可做為治療慢性咽喉炎的偏方。

 

海帶助消痰利水

海帶也叫作昆布,富含鐵、鈣、碘等,性寒味鹹,中醫學上認為其具有溫補腎氣之功效,體質虛寒的人,容易在冬天出現手腳冰冷的情況,氣血虛弱的人可多吃海帶,此外,海帶的纖維質可以清除附在消化道上的雜質,具有消痰消腫之功效;對於有慢性支氣管炎、氣喘的患者有幫助。

海帶除了能消痰、護喉, 海帶中的「碘」有助於防治甲狀腺腫大、調節人體免疫功能異常;臨床上靜脈注射患者若出現腫脹、疼痛等不適現象,可以使用海帶濕敷腫脹部位,迅速發揮消腫、止痛之效。

治慢性咽炎偏方:白糖醃海帶

材料:海帶乾250克、白糖100克。

作法:

1.海帶乾用水發泡、切細絲;入滾水燙熟、濾乾。

2.海帶乾放入容器中加白糖拌勻,醃漬2~3天後即可食用。

3.每天吃1小碟,約20~30克,2周為1個療程。

via 治慢性咽喉炎妙方 白糖醃海帶改善  | 20130930 | 華人健康網.

防子宮肌瘤增生 多吃海帶木耳菠菜

42770

中西醫合併治療子宮肌瘤病痛,在國內臨床獲得很好的成效。

在中醫婦科門診中,子宮肌瘤是常見的病灶。中醫師表示,透過飲食調理,可改善病情與症狀;平時應避免暴飲暴食損傷脾胃,飲食宜清淡,不宜過食重口味,以免生痰助濕,使肌瘤擴大增生;建議平常可多吃海帶、昆布等海藻類食物,緩解肌瘤發生機會。

中醫師吳明珠指出,子宮肌瘤是指由增生的子宮平滑肌組織和少量纖維結締組織形成的良性腫瘤。門診中發現,有不少年輕女性罹患子宮肌瘤,這些女性從初經開始就有經痛的症狀,包括月經不規則、月經過多或過少、不規則陰道出血,但卻沒有做好保健,以致使得痛經時以疼痛藥來舒解疼痛。

子宮肌瘤治標治本 活血破瘀

臨床上,子宮肌瘤造成不孕機會相當低,但卻容易造成孕婦流產的高風險,千萬不可小覷。中醫認為子宮肌瘤屬「癥瘕」範疇,一般由氣滯、血瘀、濕熱瘀結、痰積所致;治療當以行氣導滯、理血散積,活血破瘀、消症散結,清熱化濕、袂瘀散結,理氣化瘀、導痰俏積諸法,辨証施治。

據估計,國內約20%至40%的婦女其子宮長有肌瘤,而且隨著年齡的增加,其發生率越高。中醫治療方面,採取的原則是「急則治其標,緩則治其本」,也就是患者就診時,如果有因肌瘤導致身體有明顯不適症狀,要先從症狀緩解消除為優先考量;而症狀一旦緩解,或是沒有明顯症狀,則可以針對肌瘤本身治療。

中醫認為子宮肌瘤屬「癥瘕」範疇,一般由氣滯、血瘀、濕熱瘀結、痰積所致。

中醫認為子宮肌瘤屬「癥瘕」範疇,一般由氣滯、血瘀、濕熱瘀結、痰積所致。

子宮肌瘤中醫辯證 症狀3類型

對於肌瘤的治療,常因病患體質不同,使用方藥也不同,大略可分成氣滯型、血瘀型、痰濕型3種:

1.氣滯型:這類病人容易覺得下腹脹滿不舒,腫塊摸起來不硬,而且推之可移。治療上常用行氣理滯之方式,常用藥物有木香、陳皮、青皮、枳殼、川楝子等。

2.血瘀型:這類病人會覺得腹部腫塊堅硬,固定不移,有壓痛,而且經來容易刺痛血塊多。治療上宜用活血化瘀散結之方式,常用藥物有桃仁、紅花、赤芍、三稜、川三七等。

3.痰濕型:這類病人會感到腫塊偏軟,往往容易有白帶增多的現象。治療上以化痰除濕,散結消癥的方式,常用藥物有茯苓、貝母、半夏、敗醬草等。

中醫師吳明珠強調,子宮肌瘤並不可怕,重要的是要定期追蹤,注重自我的身體保養。如果希望接受中醫治療,也請記得要找合格的中醫師診察開立處方,切勿自行至藥房隨意拿藥服用,或誤信偏方。正所謂「藥物三分毒」,對證的藥才是藥,不對證的則是毒,務必要謹慎小心。

中醫師建議,要緩解子宮肌瘤增生,多吃海帶是一不錯的食療選擇。

中醫師建議,要緩解子宮肌瘤增生,多吃海帶是一不錯的食療選擇。

定期追蹤 中西合併治療

一般說來,子宮肌瘤的患者如果沒有明顯症狀,只需要定期追蹤肌瘤大小即可。特別藉由飲食調控可以緩解肌瘤增生的機會;另在調整生活與飲食期間,要隨時密切觀察肌瘤的大小,至少每2、3個月追蹤,並注意症狀的輕重,看肌瘤是否有變化,千萬不可輕忽。

【飲食調控5撇步】:

1.食材禁忌:與動物生殖系統有關的食物,或是含有大量荷爾蒙的食品,包括乳類及其製品、蛋類,以及以荷爾蒙飼養的動物之肉類。另有些植物食物,如石榴、含異黃酮,亦應禁忌。

2.五穀雜糧:如玉米、糙米、燕麥等。

3.清淡飲食:切勿油膩,別是高脂肪高熱量的食物,最好不要吃羊肉、蝦、蟹、鰻魚、鹹魚、醃漬物等食物。

4.多吃海藻:如紫菜、海帶、木耳等,海藻含礦物質最多為鈣、鐵、鈉、鎂、磷、碘等,能有效地緩解肌瘤增生機會。

5.高纖食物:包括:芹菜、菠菜、黃瓜等,因為高纖維食物有助於新陳代謝。

via 防子宮肌瘤增生 多吃海帶木耳菠菜 | 20130930 | 華人健康網.

「綠皮」黃金薯 含龍葵鹼可致中毒

42828
馬鈴薯如果發芽,龍葵鹼的含量會激增,吃到可致中毒、嚴重甚至讓呼吸中樞麻痺。(圖片/取材自維基百科)

 

日前台中市一名民眾至速食店摩斯漢堡外帶一份「黃金薯」,沒想到吃了一口就感覺到酸味、嘴巴發麻,剝開薯條後發現竟是綠色皮的馬鈴薯,原本以為無大礙就再吃了幾口,但立刻又感到噁心想吐,上網發問才發現原來自己吃到已經發芽的馬鈴薯,其中含有大量「龍葵鹼」,吃了輕者噁心嘔吐、重則昏迷抽搐、心肺麻痺死亡。

帶皮馬鈴薯發「綠」 消費者吃到臉「綠」

摩斯漢堡的「黃金薯」與其他家速食店販賣的薯條不太一樣,特色在於是選用帶皮的馬鈴薯,不少消費者也表示口感更勝一籌,因此頗受歡迎;不過日前一名消費者吃到「發綠」的黃金薯,並馬上在網路上發文詢問網友這樣的薯條是否有問題?並描述自己吃的第一口就感受到酸味,接下來更是感到嘴巴發麻、噁心想吐。

摩斯:進行初步送檢,全台黃金薯暫時下架

摩斯漢堡針對此次黃金薯事件,客服一開始先向消費者解釋,薯條是使用帶皮馬鈴薯所以有時才會呈現褐色或棕綠色,但後來不適送醫後,才表示願意賠償醫藥費與消費者損失,並會向總公司反應在食材挑選控管方面會更加嚴謹。而總公司稍早則回應,會先向消費者提供檢體送驗,才能查出到底出了什麼問題,摩斯漢堡也在中午做出最新決定,全台立即停售黃金薯。

民眾在摩斯漢堡點購一份黃金薯,卻意外吃到外皮已發綠的薯條。(圖片/取材自摩斯漢堡官網)

民眾在摩斯漢堡點購一份黃金薯,卻意外吃到外皮已發綠的薯條。(圖片/取材自摩斯漢堡官網)

 

龍葵鹼毒性強,大量可致死

大多數的人都知道馬鈴薯發芽後就不能吃,原因就是馬鈴薯發芽,芽眼、芽根會變綠、潰爛,並產生大量的「龍葵鹼」(又稱茄鹼),高出平時含量的40~70倍。馬鈴薯在正常情況下僅有少量龍葵鹼,但會隨著貯藏時間逐漸增加,等到馬鈴薯發芽後,其幼芽和芽眼部分的龍葵鹼含量就會激增,可引起中毒。

一般在進食後10分鐘至數小時內就會開始顯現出症狀,嘴巴發麻、咽喉抓癢灼燒感,且會刺激胃腸道粘膜,出現胃腸炎症狀如劇烈嘔吐、腹瀉,可導致脫水、電解質紊亂和血壓下降。此外,還可出現頭暈、頭痛、輕度意識障礙、呼吸困難。重者可因心臟衰竭、呼吸中樞麻痺死亡。

via 「綠皮」黃金薯 含龍葵鹼可致中毒 | 20130928 | 華人健康網.

高血脂型肥胖 就喝荷葉烏龍茶

42842
高血脂型肥胖族群,可以試試每天飯前飯後喝杯荷葉烏龍茶,幫助消脂、去心火。

 

上了年紀的人,最怕的就是三高問題,特別是常需要應酬、吃大魚大肉的中年上班族而言,不但體重直直上升,高血脂、高血壓的問題更是容易找上門;想要預防日後身體毛病不斷,可以試試在三餐飯前、飯後飲用荷葉烏龍茶,烏龍茶是茶類中消脂功能極佳的一種,又能去油解膩,是可以輕鬆做到的減肥小偏方。

荷葉去心火,助減少脂肪吸收

荷葉在中醫上一直被視為天然瘦身良藥,荷葉性微溫平、味辛,無毒,入心、肝、脾經,有清熱解暑、除濕祛淤、利尿通便的作用。荷葉中所含生物鹼有降血脂作用,且服用荷葉之後,會在人體腸壁上會形成一層脂肪隔離膜,有效阻止人體對脂肪的吸收。

此外,荷葉中含有一種特殊黃酮類化合物,可抑制「胰脂肪酶」,使食物中的脂肪無法在腸道分解,直接排出體外,如此便能幫助減少身體吸收脂肪,長期持續服用,就能達到減肥、瘦身的目的。

烏龍茶降體脂效果優於紅、綠茶

日本有許多相關研究都顯示,烏龍茶具有分解脂肪、抑制膽固醇的作用,烏龍茶同紅茶及綠茶相比,除了能夠刺激胰臟脂肪分解酵素的活性,減少糖類和脂肪類食物被吸收以外,還能夠加速生成身體的產熱量、促進脂肪燃燒,特別是針對減少腹部脂肪堆積;也適合高血脂、動脈硬化患者飲用。

中年以上特別容易出現體脂肪或血脂過高的情形,在飲食上更是要特別注意。

中年以上特別容易出現體脂肪或血脂過高的情形,在飲食上更是要特別注意。

 

此外,美國《臨床營養學期刊》中的研究結果顯示,進行30分鐘的中強度運動如騎腳踏車前,攝取兒茶素能增加17%的脂肪能量消耗;另一份《營養學期刊》也針對兒茶素進行12周的長期實驗,發現受試者的腹部總脂肪量減少7.4%、腹部皮下脂肪也減少7%,顯示茶葉真的能有助於降低體脂肪。

而且茶葉並非透過抑制食慾、導瀉等方法來達成減重,所以飲用烏龍茶或綠茶並不會有食慾下降或腹瀉的情形出現,對於怕整天跑廁所、或是不想痛苦節食的人更為適合。

荷葉烏龍茶

乾荷葉10克、烏龍茶或綠茶葉5~10克泡茶,在三餐飯前、飯後各飲用一次。連服1個月為一個療程。

via 高血脂型肥胖 就喝荷葉烏龍茶 | 20130929 | 華人健康網.

Young mothers ‘risk factor for early childhood death’

_70152307_child_crying-spl
The number of children dying in the UK is decreasing

 

Children born to mothers under 30 are more likely to die than those born to older mums, a report on child deaths in the UK suggests.

While overall child mortality fell by 50% in the past 20 years, young maternal age was found to be a risk factor for death in early childhood.

Support should be extended to mothers of all ages, not just first-time teenage mums, the report said.

The research was led by the Institute of Child Health at UCL.

It looked at why children die in the UK using death registration data from January 1980 to December 2010.

It focused on child injuries, birthweight and maternal age to assess the risk factors for child deaths.

The research found that in England, Scotland and Wales, the difference in mortality between children of mothers under 30 and those born to mothers aged 30 to 34 accounted for 11% of all deaths up to nine years old.

This is equivalent to an average of 397 deaths in the UK each year, the report said.


Young maternal age at birth is becoming a marker of social disadvantage as women who have been through higher education are more likely to postpone pregnancy until their 30s”

Prof Ruth GilbertInstitute of Child Health, UCL

Deaths in children born to mothers under 20 accounted for just 3.8% of all child deaths up to nine years old.

The study compared children with similar birthweight in each age category.

‘Alcohol use, smoking and deprivation’

It reported that the biggest difference in deaths was in infants aged from one month to one year.

Among this age group, 22% of deaths in the UK were due to “unexplained causes”, the report said, “which are strongly associated with maternal alcohol use, smoking and deprivation”.

The report added that the current policy, which focuses support on teenage first-time mothers, was not wide-ranging enough because mothers aged under 30 account for 52% of all births in the UK.

Ruth Gilbert, lead researcher and professor of clinical epidemiology at UCL Institute of Child Health, said the findings were important.

“Young maternal age at birth is becoming a marker of social disadvantage as women who have been through higher education and those with career prospects are more likely to postpone pregnancy until their 30s.

“Universal policies are needed to address the disparities.”

Jill Rutter, head of policy and research at the Family and Childcare Trust, said the government needed to do more.

“Disadvantage and maternal age are factors often associated with child deaths. The government has recognised the vulnerability of the children of teenage mothers and given these families extra help with parenting.

“In England the Family Nurse Partnership is an intensive, structured, home-visiting programme, which is offered to first-time parents under the age of 20.

“A specially trained nurse visits regularly from early pregnancy until the child is two years old. This project has excellent results, but is not available to older mothers.

“We would like the Family Nurse Partnership to be extended to take older mothers who need help.”

Toll from injuries


The lack of decline in intentional injuries calls for a concerted focus on reducing violence and self-harm in older children.”

Dr Hilary CassRoyal College of Paediatrics and Child Health

The study, commissioned by the Healthcare Quality Improvement Partnership and published by the Royal College of Paediatrics and Child Health, had other key findings.

First, injuries continue to be the biggest cause of death in childhood, but they are declining,

Between 1980 and 2010, injuries accounted for 31% of deaths in one to four-year-olds and 48% of deaths in those aged 15 to 18.

England had consistently lower rates of deaths from injury than the other UK countries, particularly among older boys.

But there was no decline in deaths due to intentional injury or self-harm over 30 years, the report found.

Dr Hilary Cass, president of the royal college, said this was worrying.

“Injuries remain the biggest cause of child deaths but are declining, so we need to continue to build upon public policy interventions such as traffic calming.

“The lack of decline in intentional injuries calls for a concerted focus on reducing violence and self-harm in older children.”

Disabilities and serious diseases

The study also found that up to 70% of children who die in the UK have chronic conditions such as cancer, cystic fibrosis or epilepsy.

This was not necessarily the cause of their death but likely to be an underlying factor in it.

Prof Gilbert said that although the overall number of children dying is falling, the picture was complicated by the increasing number of children now surviving with disabilities and serious diseases, and this meant that proactive care was vital.

“For some children with serious chronic conditions who are expected to die, this means high-quality end-of-life care for the child and to support their families.

“For others, their death may have been premature or completely preventable. Most children with chronic conditions are managed at home by parents with support from primary and community care services as well as hospitals. We need to focus on the quality of long-term care at home for these children as well as in hospital.”

via BBC News – Young mothers ‘risk factor for early childhood death’.

London 2012 athletes ‘had bad teeth’

_70155573_152325892

Dentists have found “striking” levels of bad teeth in athletes competing at the London 2012 Olympic Games.

 

A fifth of athletes surveyed said their oral health actually damaged their training and performance.

The study, published in the British Journal of Sports Medicine, suggested cavities, tooth erosion and gum disease were common.

Researchers said athletes, as a group, had worse dental health than other people of a similar age.

The beaming smiles of gold-medal winners Usain Bolt, Jessica Ennis-Hill and Mo Farah are some of the defining memories of London 2012.

But a team at University College London says many competitors had dental problems.

“Our data and other studies suggest that, for a similar age profile, the oral health of athletes is poor. It’s quite striking,” said lead researcher Prof Ian Needleman.

He said eating large amounts of carbohydrates regularly, including sugary energy drinks, was damaging teeth.


We know the differences at the high end of elite sport are small, it would not be surprising if oral health was having an impact ”

Prof Ian NeedlemanResearcher

He added that the stress on the immune system from intense training may leave athletes at risk of oral disease and that a fixation on training, preparation and other aspects of health may leave little time or awareness of oral health.

The study looked at those visiting the dental clinic at the Games, which offered free check-ups and mouth guards.

Competitors using the clinic may have been more likely to have dental problems than other athletes, but the research group say their findings are consistent with previous studies.

Of the 302 athletes examined, from 25 sports, 55% had evidence of cavities, 45% had tooth erosion and 76% had gum disease.

One in three said their oral health affected their quality of life and one in five said it affected training or athletic performance.

Teeth to training

Oral health is already a suspect in other seemingly unrelated conditions such as heart disease. People who do not brush twice a day are at higher risk of a heart attack and inflammation is common to both.

The researchers suggest inflammation elsewhere in the body may also affect recovery time and susceptibility to injury.

They added that tooth pain and the resulting impact on diet and sleep may also damage performance.

Prof Needleman, who is also director of the International Centre for Evidence-Based Oral Health, told the BBC: “We know the differences at the high end of elite sport are small, it would not be surprising if oral health was having an impact on those differences.

“Many sports medics have anecdotes about athletes missing medals at major competitions as a result of oral health problems.”

via BBC News – London 2012 athletes ‘had bad teeth’.

‘Sugar gel’ helps premature babies

_70094382_premature_baby-spl-2
Around the globe each year 15 million babies are born too soon

 

A dose of sugar given as a gel rubbed into the inside of the cheek is a cheap and effective way to protect premature babies against brain damage, say experts.

Dangerously low blood sugar affects about one in 10 babies born too early. Untreated, it can cause permanent harm.

Researchers from New Zealand tested the gel therapy in 242 babies under their care and, based on the results, say it should now be a first-line treatment.

Their work is published in The Lancet.

Sugar dose

Dextrose gel treatment costs just over £1 per baby and is simpler to administer than glucose via a drip, say Prof Jane Harding and her team at the University of Auckland.


This is a cost effective treatment and could reduce admissions to intensive care services which are already working at high capacity levels”

Andy ColeBliss

Current treatment typically involves extra feeding and repeated blood tests to measure blood sugar levels.

But many babies are admitted to intensive care and given intravenous glucose because their blood sugar remains low – a condition doctors call hypoglycaemia.

The study assessed whether treatment with dextrose gel was more effective than feeding alone at reversing hypoglycaemia.

Neil Marlow, from the Institute for Women’s Health at University College London, said that although dextrose gel had fallen into disuse, these findings suggested it should be resurrected as a treatment.

We now had high-quality evidence that it was of value, he said.

Andy Cole, chief executive of premature baby charity Bliss, said: “This is a very interesting piece of new research and we always welcome anything that has the potential to improve outcomes for babies born premature or sick.

“This is a cost-effective treatment and could reduce admissions to intensive care services, which are already working at high capacity levels.

“While the early results of this research show benefits to babies born with low blood sugars, it is clear there is more research to be done to implement this treatment.”

via BBC News – ‘Sugar gel’ helps premature babies.

Ballet dancers’ brains ‘adapt to spins’

_70148511_ballet
Ballet dancers train hard to be able to perform rapid pirouettes

 

Ballet dancers develop differences in their brain structures to allow them to perform pirouettes without feeling dizzy, a study has found.

A team from Imperial College London said dancers appear to suppress signals from the inner ear to the brain.

Dancers traditionally use a technique called “spotting”, which minimises head movement.

The researchers say their findings may help patients who experience chronic dizziness.

Train hard

Dizziness is the feeling of movement when, in reality, you are still.

For most it is an occasional, temporary sensation. But around one person in four experiences chronic dizziness at some point in their life.

When someone turns or spins around rapidly, fluid in the vestibular organs of the inner ear can be felt moving through tiny hairs.

Once they stop, the fluid continues to move, which can make a person feel like they are still spinning.

Ballet dancers train hard to be able to spin, or pirouette, rapidly and repeatedly.

They use a technique called spotting, focusing on a spot on the floor – as they spin, their head should be the last bit to move and the first to come back.

In the study, published in the journal Cerebral Cortex, the team recruited 29 female ballet dancers and 20 female rowers of similar age and fitness levels.

Reflexes

After they were spun in the chair, each was asked to turn a handle in time with how quickly they felt like they were still spinning after they had stopped.


It’s not useful for a ballet dancer to feel dizzy or off balance”

Dr Barry SeemungalImperial College London

Eye reflexes triggered by input from the vestibular organs were also measured.

Magnetic resonance imaging (MRI) scans were also taken to look at participants’ brain structures.

Dancers’ perception of spinning lasted a shorter time than rowers’ – and the more experienced the dancers, the greater the effect,

The scans showed differences between the dancers and the rowers in two parts of the brain: the cerebellum, which is where sensory input from the vestibular organs is processed, and the cerebral cortex, which perceives dizziness.

The team also found that perception of spinning closely matched the eye reflexes triggered by vestibular signals in the rowers, but in dancers there was no such link.

Resistant

Dr Barry Seemungal, of the department of medicine at Imperial College London, who led the research, said: “It’s not useful for a ballet dancer to feel dizzy or off balance. Their brains adapt over years of training to suppress that input.

“Consequently, the signal going to the brain areas responsible for perception of dizziness in the cerebral cortex is reduced, making dancers resistant to feeling dizzy.”

He added: “If we can target that same brain area or monitor it in patients with chronic dizziness, we can begin to understand how to treat them better.”

Deborah Bull, a former principal dancer with the Royal Ballet, who is now the executive director of the Cultural Institute at King’s College, London, told BBC Radio 4’s Today programme: “What’s really interesting is what ballet dancers have done is refine and make precise the instruction to the brain so that actually the brain has shrunk. We don’t need all those extra neurons.”

via BBC News – Ballet dancers’ brains ‘adapt to spins’.