Can sugar alone (from soda)cause diabetes type 2? I eat healthily and am 146 pounds and 6 feet tall, I drink 2 litres of coke over a span of two days

Diabetes . Excess sugar can cause elevated sugars and if this is prolonged can put you at risk for diabetes. Drink sugar free instead. It's healthier and you won't gain wait because of excess calories. .
Sugar. Any carbonated drink has other issues including phosphoric acid which can affect teeth and bones. The risk for DM type 2 is more complex than just sugar intake. Genes play a role. So eating healthy is key for all of us. Avoiding any carbonated drink is best. There is no data that sugar free is better and may be as problematic as fructose based drinks. So moderate your intake. .