Drinking alcohol for short term does not have much of the problems. If one drink too much alcohol for the long period of time, can put the health at risk. There can be lots of hidden harmful effects on the health, that may not become apparent until many years.Men are recommended to drink not more than 3-4 units a day and women are designed to take not more than 2-3 units a day. Consider 1 unit of alcohol is equal to 10 ml of pure alcohol. No matter how diluted it is.
Concentration of alcohol varies with the type of alcoholic drink you take.
1. A paint of strong lager contain 3 units of alcohol
2. 250Ml bottle of wine contains 2 units of alcohol
3. 25ml of spirit contain 1 unit of alcohol
Chances of cancer
Drinking more units than the safe limits as recommended can lead to various health conditions. Excessive consumption of alcohol can cause many neurological conditions such as depression and epilepsy.It is also linked to caused various type of cancers such as, Drinking as little as three units of alcohol a day increases your risk of developing many types of cancer, including cancers of the mouth, throat, oesophagus (the pipe that goes from your mouth to your stomach), liver, breast and bowel.If you drink and smoke, you are likely to get cancer up to 50 times more than someone who never smokes and drinks alcohol.
Effect on heart and circulation
Drinking too much alcohol regularly, damages the heart and increases the risk of developing heart disease and stroke. Damages the heart rhythm and heart muscle.Men drinking more than eight units of alcohol a day, on a regular basis, doubles their risk of heart disease and stroke and are four times more likely to have high blood pressure and double their risk of stroke. In case of women danger lies in those, who regularly drink more than six units of alcohol a day.
Risk to the liver
Alcohol surely damages the liver. The major functions of the liver are to filter and clean the blood. The Liver takes about one hour  to break down one unit of alcohol. During this process the liver tissues are continuously getting destroyed. So drinking too much alcohol, you have all the chances of developing a range of liver diseases such as, fatty liver, hepatitis and alcohol-induced cirrhosis and a complete liver failure. If you can stop drinking or cut down the quantity of alcohol consumption in the  early stages of liver disease, the liver may start recovering.The process of liver damage is silent, once it starts showing the symptoms, that come on suddenly, it can be life-threatening.
Sex, reproduction and alcohol
Men and women drinking regularly, more than the daily recommended unit, is known to affect their fertility.In women, it can disrupt ovulation and menstrual cycles which can make them infertile.Where as in men, it can cause loss of sexual desire and affect sperm production due to reduced testosterone levels. Alcohol makes men difficult to achieve and maintain an erection.
Effect on Mental health with alcohol
Drinking regularly for a long time can affect the mental health severely, leading to anxiety, depression, risk-taking behavior, personality disorders, schizophrenia and suicide.It acts by altering the neurotransmitters, in the brain and after a few weeks of cutting down alcohol, will show the improvement.
Nervous system and Alcohol
Heavy consumption of alcohol regularly can lead to brain and nerve damage, leading to memory problems, dementia. This is majorly caused due to lack of vitamin B1 absorption, if left untreated, lead to permanent memory loss.Heavy drinking over a long period may cause problems with learning, thinking and problem solving. If you stop drinking, these may to some extent is reversible.