禁煙と男性における年齢関連の白内障のリスク
W G Christen1, R J Glynn, U A Ajani
1Division of Preventive Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA, USA.
JAMA
|August 6, 2000
まとめ
禁煙は,主に喫煙による累積的なダメージを制限することによって,年齢に関連する白内障を発症するリスクを大幅に軽減します. 長期にわたる元喫煙者でさえ,現在の喫煙者と比較して白内障の発生率が低下しています.
科学分野:
- オフタルモロジック (眼科)
- エピデミオロジー エピデミオロジー
- 公衆衛生は公衆衛生である.
背景:
- 喫煙は,年齢に関連する白内障の危険因子として知られています.
- 禁煙が白内障のリスクに与える影響に関する既存のデータは不確実です.
研究 の 目的:
- 禁煙と年齢関連の白内障の発生率との関連を調査する.
- タバコを禁煙した人の白内障のリスク減少を定量化するために.
主な方法:
- アメリカの男性医師20907人を対象とした前向きなコホート研究 (Physicians' Health Study I) で,平均13.6年間追跡調査を行った.
- インシデント年齢関連の白内障は,医療記録で確認された自己報告によって定義され,視力喪失につながり,または外科的摘出を必要とする.
- 喫煙状況と禁煙から数年がベースラインで評価されました.
主要な成果:
- 現在の喫煙者と比較して,過去の喫煙者は白内障のリスクが低かった (相対リスク (RR) は0.73から0.79まで).
- タバコを吸ったことのない人のリスクは最も低い (RR=0.64).
- 元喫煙者におけるリスクの減少は,主に喫煙による累積的な投与量の低下によるものであったが,一部の分析では,投与量に関係なく利益が示唆された.
結論:
- 禁煙は,年齢に関係する白内障のリスクを明らかに軽減します.
- リスク軽減の主なメカニズムは,累積的な用量関連のレンズの損傷を制限することです.
- 喫煙によるレンズ損傷の一部は,禁煙後に回復する可能性があります.
関連する概念動画
Cancer Prevention
Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Some...
Menopause
Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption
As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism
Geriatric patients show significant variation in how their bodies process medications, which can change how effective and safe treatments are. The liver is the primary organ where drug metabolism occurs, involving two main types of chemical reactions: phase I and II. Phase I metabolism is driven by the cytochrome P450 enzyme system, which includes key types such as CYP3A, CYP2D6, and CYP2C9. Research indicates that while aging doesn't notably alter the levels or activity of these enzymes, it...
Statistical Methods for Analyzing Epidemiological Data
Epidemiological data primarily involves information on specific populations' occurrence, distribution, and determinants of health and diseases. This data is crucial for understanding disease patterns and impacts, aiding public health decision-making and disease prevention strategies. The analysis of epidemiological data employs various statistical methods to interpret health-related data effectively. Here are some commonly used methods:
Stress Prevention and Stress Management Techniques IV
Stress often leads to unhealthy habits like smoking, excessive drinking, and overeating, which offer short-term relief but ultimately increase long-term health risks. These behaviors create a cycle that temporarily lowers stress levels but can result in severe long-term health consequences. Breaking these habits is essential to reduce the risk of chronic diseases and improve overall well-being. Three primary changes that support better health include quitting smoking, reducing alcohol intake,...


