Choose fruits in season as there is less chance of preservatives. Fruits that come from far away, are plucked before they are ripe and treated with chemicals to induce ripening. Best to buy tropical fruits in summer. Always peel the skin of the fruit or vegetable and remove seeds before juicing. Sugar is added to addict the consumer to the taste of beverage.
Pop drinks are even more concentrated with sugar.
A liter of pop contains 12 tablespoons of sugar. If you are prone to Candida infection stay away from commercial juices and pop drinks. If you do drink it, then dilute the juice with water, 50-50. If you look at the ingredient list on the bottle, the ingredient with highest concentration is listed first. A number of red colored juices use cochineal.