症状・状態

14 エビデンスに基づいたサプリメント研究のある健康状態

We evaluate supplements across specific sleep-related conditions. Each condition page ranks ingredients by evidence grade, showing you what the research says about supplements for insomnia, restless sleep, and more.

How We Grade Evidence

各症状ページでは、臨床エビデンスの強さに基づいてサプリメント成分をランク付けしています。各グレードの意味は以下の通りです：

Strong Evidence

Multiple randomized controlled trials (RCTs) or meta-analyses with consistent positive results and large sample sizes.

Good Evidence

At least one RCT with mostly consistent results across studies. Evidence suggests benefit but more research may be needed.

Some Evidence

Small studies or observational data with some positive signals. Promising but insufficient for strong recommendations.

Very Early Research

In vitro studies, case reports, or pilot studies only. Early-stage research that requires clinical validation.

むずむず脚症候群

5-10% of adults; 2-3% have clinically significant symptoms

Urge to move legs Creeping/crawling sensations Evening worsening +1

不安に伴う睡眠障害

70-80% of anxiety disorder patients report sleep problems

Pre-sleep worry Hypervigilance Somatic tension +1

不眠症

10-15% chronic insomnia; 30-35% occasional symptoms

Difficulty falling asleep Frequent awakenings Early morning waking +1

中途覚醒型不眠症

More common in older adults; affects ~15% of population

Multiple night awakenings Difficulty returning to sleep Light sleep +1

交代勤務睡眠障害

10-38% of shift workers

Insomnia during day sleep Excessive sleepiness at work Reduced total sleep time

入眠困難

15-20% of adults report difficulty falling asleep

Lying awake >30 min Racing thoughts Physical tension +1

加齢に伴う睡眠の変化

Affects majority of adults over 60

Earlier wake times Less deep sleep More frequent awakenings +1

時差ぼけ

Affects most transmeridian travelers (>3 time zones)

Insomnia at destination bedtime Daytime fatigue GI disturbance +1

概日リズム障害

0.13-0.17% delayed sleep phase; higher in adolescents

Inability to sleep at desired time Excessive sleepiness Social/work impairment

睡眠時無呼吸症候群

9-38% of general population; higher with obesity

Loud snoring Witnessed apneas Excessive daytime sleepiness +1

Pregnancy-Related Sleep Disruption

75-90% of pregnant women report sleep problems, especially in third trimester

Frequent urination at night Difficulty finding comfortable position Leg cramps +1

Hyperarousal and Cognitive Insomnia

Central feature in 50-70% of chronic insomnia cases

Racing thoughts at bedtime Inability to 'turn off' the mind Heightened alertness in bed +1

Menopause-Related Sleep Disturbance

40-60% of perimenopausal and postmenopausal women

Hot flashes disrupting sleep Night sweats Difficulty returning to sleep +1

Nighttime Pain-Related Sleep Disruption

50-80% of chronic pain patients report sleep disruption

Difficulty finding comfortable position Frequent awakenings from pain Unrefreshing sleep +1

FDAに関する免責事項: これらの記述は米国食品医薬品局（FDA）による評価を受けていません。本ウェブサイトの製品および情報は、疾病の診断、治療、治癒、または予防を目的としたものではありません。表示されているエビデンスグレードは、公開された査読済み研究の分析に基づいており、医療上の助言を構成するものではありません。サプリメントの摂取を開始する前に、必ず医療専門家にご相談ください。