Every little bit of alcohol affects you. However how it may affect you depends on how much you drink accompanied with other factors. It can affect physical, mental and sexual health. The alcohol and erectile relationship is based on genetics, weight, gender, age and the state of mind along with the medications someone is taking.
Central Nervous System
Although alcohol can help some people get into the mood of intimacy, it is a depressant that affects the central nervous system. It begins by increasing the activity of GABA, which is a neurotransmitter that slows down brain activity and produces a sedating effect.
Little alcohol intake is unlikely to cause any issues with sexual function, but may cause relaxation and inhibition. Excessive alcohol consumption can affect cognitive and motor function as well as nerve function. This could result in decreased sexual performance due to reduced response to sexual stimulation.
Blood Circulation
Furthermore, Alcohol affects pathways involved in blood circulation. It slows down signal and blood flow to the penis thus altering the ability for an erection.
Dehydration
Alcohol is a diuretic which means it can cause dehydration and increased urination. The dehydration can lead to narrowing of blood vessels which limit the blood flow to the penis. This limitation of blood flow is a common reason behind ED.
Hormone Function
High levels of alcohol consumption can impact testicular function and hormone production causing a drop in testosterone levels which lower the sex drive.This dip in sex drive can affect those with PE or ED as existing problems.
Cardiovascular Function
Light to moderate alcohol drinking is linked to low risk of cardiovascular disease, while heavy consumption leads to increased mortality. A study found that heavy alcohol drinking increased the risk of high blood pressure which is a risk factor for sexual dysfunction.
Chronic heavy drinking can result in damaged blood vessels raising the risk of alcohol induced ED, stroke and heart disease.