Hypoglycemia is a condition when there is low amount of sugar in the blood. When you drink alcohol, the high amount of sugar in the alcohol raises the blood sugar level initially but then to counteract the effect of high blood sugar level insulin kicks in to lower the blood sugar level.
That's why when you've initially drunk the alcohol you will feel lifted and spirited up however when the high blood sugar level goes down to the lower blood sugar level, one will start to feel depressed, anxious and angry. Peroidic alcohol drinking can impair your brain physiological functions and is one of the cause for different degenrative diseases.
Likewise, if people's diet consist of junk foods and processed foods, their blood sugar levels can swing highly which can make a person go on road rage, attack people and be suicidal and homicidal.
Your behaviour can be transformed through your changes in your diet. Cut down on sugary, fried and fat foods and stick to a clean and healthy diet. As a result , your body will function at it's peak due to the necessary amount of nutrition available in your body to function at it's optimum level.