The Impact of Excessive Alcohol Consumption on Auditory Processing: What Truly Happens to Our Ears When We Drink Too Much

A Question That Deserves a Serious Answer

It is a thing of which one speaks little, in effect. We discuss the liver, the heart, the stomach. We discuss the headaches of the morning after. But the hearing? The capacity to distinguish a voice in a crowded room, to perceive the direction from which a sound arrives, to follow a conversation without that exhausting effort of concentration? This, almost nobody considers.

And yet, the auditory system is among the first to suffer when alcohol is consumed in quantities that exceed what the organism can manage with tranquillity. I wish to explain here, with clarity and without unnecessary complications, what happens in the ear and in the brain of the person who drinks too much, and what one can do concretely to protect this precious sense.

How Alcohol Arrives to the Auditory Structures

When alcohol enters the blood – and it enters rapidly, within minutes from the first glass – it does not choose where to go. It circulates everywhere. And everywhere there are small blood vessels that nourish delicate tissues, there alcohol arrives with its effects.

The inner ear, that extraordinary labyrinth of liquid and tiny cells which transforms vibrations into electrical signals for the brain, is nourished by very fine capillaries. Alcohol, in excessive quantities, provokes two principal problems in these vessels:

• A dilation followed by a constriction of the small arteries, which creates an irregular flow of blood to the cochlea
• An increase of viscosity in the blood, which makes more difficult the oxygenation of the hair cells (those tiny sensors that translate sound into nerve impulses)

The result is that the cells of the inner ear, which are among the most metabolically active in the entire body, find themselves to work in conditions of scarcity. And they are cells that, once damaged, do not regenerate. This is a fact that one must hold well in mind.

The Damages to the Hair Cells and the Auditory Nerve

In the cochlea there are approximately fifteen thousand external hair cells and three thousand five hundred internal ones. These numbers, so precise, give the idea of how little margin we have. Every night of heavy drinking, every weekend in which one exceeds with regularity, creates a condition of oxidative stress in these cells.

What does this mean in practice? It means that the free radicals produced during the metabolism of alcohol attack the membrane of these cells. The cells, little by little, lose their capacity to vibrate correctly in response to specific frequencies. The person does not notice immediately. The hearing loss from alcohol is not sudden, as a thunder. It is slow, insidious, like sand that accumulates grain by grain.

After years of excessive consumption, studies have observed a reduction particularly in the capacity to perceive high frequencies – those that permit to distinguish the consonants in speech, the “s”, the “f”, the “t”. This is the reason for which the person who has drunk much for many years says: “I hear that they speak, but I do not understand the words.”

Auditory Processing: The Brain Also Pays Its Price

Here is a point on which I wish to insist, because it is often ignored. Hearing is not only an affair of the ear. The ear captures the sound, yes, but it is the brain that elaborates it, that gives it meaning, that separates the voice of our son from the noise of the traffic.

Alcohol is a depressant of the central nervous system. In excessive quantities, it slows the transmission between neurons in the auditory cortex. The consequences are these:

These are not permanent effects after one evening of excess. But when the excess becomes a habit of years, the neural pathways adapt, and the recovery becomes much more slow, sometimes incomplete.

The Signs to Which One Should Make Attention

The body speaks, if we listen. There are signals that indicate the auditory system is under stress from alcohol:

• A sensation of “full ears” or muffled hearing the morning after drinking
• A ringing or buzzing (tinnitus) that appears after episodes of heavy consumption
• The necessity to ask “what?” more frequently, especially in environments with noise
• A fatigue disproportionate after conversations, as if listening had become a labour
• A difficulty to follow the television at the volume that before was sufficient

If one recognises oneself in two or more of these points, and if the consumption of alcohol is regular and abundant, it is the moment to reflect seriously. Not with panic, but with the calm lucidity of who wishes to take care of oneself.

What One Can Do Concretely to Protect the Auditory Capacity

The first and most obvious indication is to reduce the quantity of alcohol. The organism has a remarkable capacity of recovery, but only if we give it the time and the conditions. The hair cells that are still vital can stabilise their function if the toxic aggression stops.

Beyond the reduction of alcohol, there are concrete actions:

• Protect the ears from supplementary noise. If the auditory system is already weakened by alcohol, to expose it also to loud music or noisy work environments without protection accelerates the damage in a dramatic way.
• Nourish the system with what it needs. The cells of the inner ear require specific micronutrients: magnesium, zinc, vitamins of the group B, and antioxidants. A diet rich in green vegetables, legumes, fish, and seasonal fruit is the base.
• Move the body. A moderate and regular physical activity improves the microcirculation, included that of the cochlea. Even thirty minutes of brisk walking each day make a difference.
• Sleep sufficient hours. The repair of the neural tissue happens principally during deep sleep.
• Control the hearing periodically. After the forty years, and in particular if there has been a history of excessive drinking, an audiometric test every year is a wise habit.

Supporting the Auditory Function from Within

There are moments in which the diet alone, perhaps because of the rhythm of life or because of a period of particular stress, does not furnish all the nutritional elements that the auditory system requests. In these cases, some persons turn to specific formulations thought for the support of the hearing.

Acuvit, for example, is a food supplement formulated with the intention of accompanying the auditory function through a combination of nutrients directed to the cells of the inner ear and to the microcirculation. It is not a medicine, and it is right to say this with clarity: no supplement substitutes a correct alimentation or the reduction of alcohol. But as a complementary support, within a serious approach of care, it can have its place.

For who wishes to understand better the composition and the logic behind this formulation, the information is available at acuvit.health, where one finds explained in transparent manner what is contained and with what rationale. I think this transparency is important, because the person who takes care of the own health has the right to know what she puts in the body and for which reason.

The point, in the end, is always the same: to give the auditory system the conditions for functioning well, or at least for not deteriorating further.

A Final Reflection, With Honesty

I do not wish to make here a discourse of moralism about alcohol. Each adult makes the own choices. But I wish to say with frankness that the hearing is a sense we take for granted until it begins to abandon us. And when it does, it does not return to knock at the door to ask if we want it back.

The impact of excessive alcohol on auditory processing is real, documented, cumulative. It touches the ear and the brain, the cells and the connections between them. But the knowledge of this mechanism is also an instrument of power: because who knows what happens, can decide differently. Can reduce, can nourish, can protect, can support.

The ears have served us faithfully since the first day of life, bringing us the voice of the mother, the music, the laughter of the persons we love. The least we can do is to treat them with the same fidelity they have shown to us.