Does a beer is likely to cause diabetes if u drink twice a week ?

Bitter tea, fish oil, cucumber. Insya Allah help. Allahu akbar ! Viva Indonesia !

Considering the number of 30+ year non diabetic alcoholics out there. I'm going to say that two beers a week or any other food or drink for that matter, is NOT going to cause diabetes.

I don't think so.  Diabetes 1 is caused by a terribly unhealthy eating lifestyle.  Diabetes 2 is a completely different story. You can google it to find out the difference.

Meanwhile i found this: 

While moderate amounts of alcohol may cause blood sugar to rise, excess alcohol can actually decrease your blood sugar level -- sometimes causing it to drop into dangerous levels, especially for people with type 1 diabetes. Beer and sweet wine contain carbohydrates and may raise blood sugar.

Depends entirely on your DNA and subsequently your liver's ability to clear ROS from its mitochondria. 

It also depends on how much you are drinking. 

Diabetes has two main causes, either cells in muscle, fat and the liver become resistant to insulin or the pancreas is unable to produce enough insulin to manage blood sugar levels.  Beer won't "cause" diabetes, but it can cause high blood sugar if you have diabetes.