勃起不全：原因を理解してから治療します。

勃起不全（ED）とは、満足のいく性行為を行うために十分な勃起を維持または達成できない状態が持続的または反復的に起こることを指します。時折起こる困難は正常であり、臨床的に重要ではありません。EDは、症状が3ヶ月以上続く場合、または生活の質や人間関係に影響を及ぼし始めた場合に診断されます。

有病率は年齢とともに急激に上昇します。研究によると、40歳以上の男性の半数以上が何らかの程度のEDを経験しており、¹ その割合は10年ごとに増加しています。この疾患は、心血管リスク因子、糖尿病、ホルモンバランスの乱れ、特定の薬剤と強く相関しているため、単独の問題として片付けるのではなく、より広範な健康状態を示す臨床的シグナルとして評価されるべきです。

EDは非常に治療可能です。ほとんどの患者は第一選択治療によく反応し、根本原因の管理は、単なる症状の改善を超えた持続的な改善をもたらすことがよくあります。未検証のオンライン情報に頼ったり放置したりせず、機密性が高く科学的根拠に基づいた評価を受けることが、適切な第一歩です。

EDの原因が単一であることは稀です。ほとんどの症例は、血管、ホルモン、代謝、神経、心理的要因、および薬剤関連の要因が組み合わさっています。主要な原因を理解することが、効果的な治療の基礎となります。

血管の原因 は50歳以上の男性に最も多く見られます。動脈硬化、高血圧、血管内皮機能障害は血管の能力を低下させ、多くの場合、根本的なメカニズムとなっています。EDは診断される前に頻繁に先行します 心臓検査 3〜5年早く、² そのため、重要な早期の兆候として 心臓検査.

ホルモンの原因 主に以下が関与します テストステロン欠乏症。総テストステロン値が臨床的閾値（通常、朝の2回の検体で<12 nmol/L）を下回ると、補正によって性欲と勃起機能の両方が改善することが多いですが、TRTは診断が確定した後にのみ開始されます。

代謝の原因 糖尿病とインスリン抵抗性に焦点を当てています。糖尿病性神経障害と血管障害が併発することで、糖尿病男性のED発症率は2〜3倍高くなります。 糖尿病ケア は、すべてのHisentialのED検査の一部です。

心理的な原因 - ストレス、不安、うつ、パフォーマンス不安、人間関係の要因は、心血管および代謝プロファイルが健康な40歳未満の男性に特に多く見られます。

薬剤性ED 特定の降圧薬（特にベータ遮断薬やチアジド系利尿薬）、SSRI、抗精神病薬、フィナステリドでよく見られます。疑われる場合は、代替薬が利用可能なことが多いため、医師の指導なしに処方薬の服用を中止しないでください。

Less obvious contributors include venous leak, where blood drains from the penis faster than it can be retained, untreated obstructive sleep apnoea, thyroid disorders, raised prolactin, and nerve damage from pelvic surgery, spinal injury or long-standing diabetes. These are less common than vascular causes but they change the treatment plan when present, which is why the workup looks for them rather than assuming.

EDと併せて評価すべき併存疾患には以下が含まれます premature ejaculation treatment, 前立腺肥大、 そして 人間ドック.

Most men have a mix of both, but the pattern of symptoms usually points to which side dominates. This is one of the first things we work through in consultation.

The ladder below is how the main options compare in practice. Most men start at the top and add to it rather than replacing it.

A minority of men do not respond to first-line care, usually where nerve or blood vessel damage is extensive. Further options exist: vacuum erection devices, injectable therapy given directly into the penis, and surgically placed penile implants for men who have exhausted everything else.

These are not part of the service list at our Orchard clinic. Where they become the right next step, we discuss them honestly and refer you to a urologist who provides them.

An erection is a vascular event, so anything that improves blood vessel health improves erectile function. That is why the best-supported natural approaches are unglamorous rather than exotic.

Strong evidence: aerobic exercise, roughly forty minutes at moderate to vigorous intensity four times a week, sustained for six months or more; weight loss in men carrying excess visceral fat; stopping smoking; treating poor sleep and untreated obstructive sleep apnoea; reducing heavy alcohol intake; a Mediterranean-style eating pattern; and pelvic floor training, which has randomised trial support particularly where erections fade quickly.

Limited evidence: a small group of supplements, including nitric oxide precursors, ginseng preparations and correction of genuine vitamin D or zinc deficiency, has plausible mechanisms and some small-trial support. Effects are far smaller than prescribed treatment, and supplementing where you are not deficient does nothing. Discuss any supplement with your doctor first, especially if you take blood pressure medication.

A safety warning worth taking seriously: health authorities in Singapore and across the region regularly find sexual performance products adulterated with undeclared prescription medicines, sometimes at doses well above therapeutic range. A hidden ingredient can be fatal in combination with nitrate medication prescribed for angina, and dangerous in men with unstable heart disease. If a supplement produces a strong, rapid, drug-like effect, treat that as a reason for suspicion rather than reassurance.

The relationship runs both ways. Stress, low mood and anxiety reduce arousal and interfere with the nerve signalling an erection depends on. Erectile difficulty then damages confidence and mood, which makes the next occasion harder. That loop is what most men actually present with, whatever started it.

Performance anxiety is the clearest version: one difficult episode becomes anticipation of another, attention shifts to monitoring yourself rather than the experience, and the sympathetic response that anxiety produces works directly against the relaxation an erection requires.

Psychological factors are more likely to dominate in younger men with healthy cardiovascular and metabolic profiles, where onset was sudden, situational, and morning erections are preserved. Some prescribed medications for low mood also affect sexual function, which is worth raising rather than stopping treatment on your own.

We address this alongside physical treatment rather than instead of it. Restoring reliable function often breaks the anxiety cycle by itself, while the underlying vascular, hormonal and metabolic work continues in parallel.

Start with assessment rather than a product. Bloods, cardiovascular risk and a proper history tell you which lever is worth pulling, and they are the difference between treating ED once and treating it forever.

For most men, first-line oral medication is the sensible opening move while the rest of the plan takes effect. Vascular-dominant cases are the ones best suited to shockwave therapy. Where testosterone deficiency is confirmed on two morning samples, that is treated on its own track with monitoring. Lifestyle and metabolic work runs in parallel throughout, because it is the part that keeps the gains.