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| 숲에선 면역기능 키우는 좋은 물질이 나온다/노화방지뉴스 |
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2010.07.26 09:42 |
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2010.07.26 11:32 | |
숲과 같은 녹지대에 있으면 마음이 편안해 지는데 단지 기분만 그런 게 아니라 천연 항암성분의 물질이 나오기 때문에 실제 건강에도 효과가 있다는 주장이 나왔다.
핀란드 숲연구협회 에바 카랄라이넨 박사는 숲에서는 인간의 면역 체계가 강화되어 암세포를 죽이는 자연살상세포(natural killer cell)의 활동이 활발해진다는 것을 밝혀냈다. 자연살상세포란 특수 효소로서 암세포나 세균, 바이러스에 감염된 세포를 파괴하는 세포를 말한다.
사람들은 숲에 들어서면 마음이 편안해지면서 기분이 좋아진다고 한다. 실제 숲은 스트레스를 줄이고 울화와 같은 부정적인 감정을 누그러뜨린다. 혈압, 심장박동, 근육 긴장이 낮아지고 스트레스 호르몬이 줄어들어 특히 발달장애(ADHD) 아동과 같은 경우 숲은 좋은 치유 공간이다.
숲이 실제 건강에 좋다는 과학적인 뒷받침은 많지 않았는데 카랄라이넨 박사는 주목나무 껍질의 천연 항암제 탁솔(Taxol)과 참나무 경목껍질에서 뽑아낸 자일리톨을 예로 들며 숲이 건강에 좋은 근거를 제시했다.
탁솔은 유방암 난소암 폐암 위암에 탁월한 효과가 있는 것으로 지난 1993년 미국식품의약국(FDA)에서 항암제로 인정했다. 자일리톨은 카리에스라는 뼈를 부식시키는 물질을 억제하는 효과가 있다.
카랄라이넨 박사는 “숲은 사람들의 일처리 능력을 높여주고 건강관리 비용까지 줄여주는 경제효과가 있다”며 “도심에서도 주변에 녹지 공간을 조금이라도 더 만들어야 하는 이유”라고 말했다.
이 주장은 2010 세계산림과학대회(2010 IUFRO World Forestry Congress)에서 발표되었으며 온라인 과학뉴스 이사이언스뉴스가 23일 보도했다. |
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Serum Homocysteine and Folate Concentrations Are Associated with Prevalent Age-Related Hearing Loss
 Elevated total serum homocysteine (tHcy) concentrations associated with vitamin B-12 or folate deficiencies may adversely affect blood flow to the cochlea, leading to age-related hearing loss (presbycusis). However, only 2 small cross-sectional studies have assessed the link between folate, vitamin B-12, or tHcy and presbycusis. We aimed to determine both the cross-sectional and longitudinal association between serum concentrations of folate, vitamin B-12, or tHcy and risk of age-related hearingloss. The Blue Mountains Hearing Study is a population-based survey of age-related hearing loss (1997–1999 to 2002–2004).
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Dietary Factors, Mediterranean Diet and Erectile Dysfunction
 ABSTRACT: Introduction. Although epidemiological evidence seems to support a role for lifestyle factors in the pathogenesis of erectile dysfunction (ED), limited data are available suggesting that dietary changes may improve ED.
Aim. To provide an update on clinical evidence regarding the role of dietary factors in ED.
Methods. A systematic literature search was performed using MEDLINE and other database (EMBASE, SCOPUS) with MeSH terms and keywords for "erectile dysfunction", "diet", "dietary patterns", "Mediterranean diet", and "lifestyle".
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Green Tea Supplementation Affects Body Weight, Lipids, and Lipid Peroxidation in Obese Subjects with Metabolic Syndrome
 Objective To compare the effects of supplementation of green tea beverage or green tea extracts with controls on body weight, glucose and lipid profile, biomarkers of oxidative stress, and safety parameters in obese subjects with metabolic syndrome.
Design Randomized, controlled prospective trial.
Setting General Clinical Research Center (GCRC) at University of Oklahoma Health Sciences Center (OUHSC).
Subjects Thirty-five subjects with obesity and metabolic syndrome were recruited in age- and gender-matched trios and were randomly assigned to the control (4 cups water/d), green tea (4 cups/d), or green tea extract (2 capsules and 4 cups water/d) group for 8 weeks. The tea and extract groups had similar dosing of epiogallocatechin-3-gallate (EGCG), the active compound in green tea.
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Metabolic syndrome as a risk factor for high-ocular tension
 Objective: To investigate the relationship between the metabolic syndrome and intraocular pressure (IOP). Methods: An observational study was conducted in a medical health checkup program at a general hospital. This study involved 14,003 apparently healthy Japanese men and women, 18–83 years of age, with a mean IOP of 14.8 (3.0) mm Hg. IOP was examined by noncontact tonometer. High-ocular tension was defined as IOP >21mm Hg without optic-disc abnormalities or history of receiving any anti-glaucoma therapy. Modified criteria of the revised National Cholesterol Education Program Adult Treatment Panel III (rATPIII), the new International Diabetes Federation definition, and the Japan Society for The Study of Obesity definition were used to characterize the metabolic syndrome. Air temperature was assessed from the Gifu Meteorological Observatory, Gifu, Japan.
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by 한공창 at 2010.07.27. 10:13
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[이전글] : 술도 약이 될 수 있다
[다음글] : 서울대병원 김효수-이세원, ‘줄기세포 선도연구팀’/노화반지뉴스
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