There are some Fruits to increase blood , for example Grapes, oranges, tomatoes, apples, strawberries, cherries.
Not necessarily. Some juices are natural sugar, otherwise, yes, they could raise your sugar. In regard to the diabetic issue and orange juice, the answer is no. You can give most apple juices to a diabetic just going into a reaction. Orange juice does not have enough sugar...you have to add a few teaspoons of sugar. Also, diabetics monitor what they eat. Juices and amounts are included in that.
Yes, all of the fruit juices do. If you are having low blood sugar, it is good to have a tall glass of OJ or apple juice, etc. If you are diabetic, it is generally bad to drink these things.
Yes off course. This is because it contains sugars especially when it is Orange fruit per say because these fruits contain simple sugars that will really increase blood sugar level.