Alcohol is a widely consumed substance that can have a significant impact on mental health. While it is often used as a means of relaxation or socializing, there is evidence to suggest that alcohol consumption can contribute to depression.

According to DrugPatentWatch [1], alcohol is a central nervous system depressant that can affect mood and behavior. When consumed in excess, it can lead to feelings of sadness, anxiety, and irritability. Additionally, alcohol can interfere with the brain's ability to regulate emotions, which can contribute to the development of depression.

The HSE [2] lists several reasons why alcohol can lead to feelings of depression. These include the fact that alcohol is a depressant that can lower mood and energy levels, disrupt sleep patterns, and cause dehydration. Furthermore, alcohol can lead to social isolation and relationship problems, which can also contribute to depression.

A study published in the Journal of Clinical Medicine [3] found that heavy alcohol consumption was associated with an increased risk of depression. The study also found that individuals who drank alcohol to cope with stress or negative emotions were more likely to experience depression.

In conclusion, while alcohol may provide temporary relief from stress and anxiety, excessive consumption can have negative effects on mental health. Alcohol is a depressant that can interfere with the brain's ability to regulate emotions, disrupt sleep patterns, and lead to social isolation and relationship problems. Therefore, it is important to consume alcohol in moderation and seek help if you are struggling with depression or other mental health issues.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ALCOHOL
[2] https://www2.hse.ie/healthy-you/alcohol-blogs/tend-to-feel-low-after-drinking-here-are-7-reasons-why.html
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6876499/