Compared to not eating fruits and veggies at all, juicing is a healthier option. However, if your argument is that juicing is just as healthy as eating whole fruits and vegetables then you are unequivocally wrong.
Yes, you get the same nutrient density with juice as with whole fruits but that’s only half the story. Juicing removes fiber which contributes to digestive health, feelings of fullness and also forces your body to burn more calories than drinking the juice by itself. Removing the fiber also means you are left with mostly just the sugar (sucrose and fructose) of the foods which your body absorbs into the bloodstream far more quickly than when having to deal with digesting the pulp. This can spike your insulin levels and actually contribute to insulin resistance over time. So while you are getting the same vitamins and nutrients, it’s not any healthier.
If you ate that carrot, kale, spinach, celery, cucumber and apple in whole form, that would be a pretty big meal. You would feel full for a long time and you would end up digesting all of this food slowly over many hours afterwards. Juicing it probably produces around 8-10 oz of liquid which you quickly gulp down. You would probably feel hungry again in an hour or two because you haven’t really satiated your appetite. You intake the same overall calories but chances are you will consume more calories in short order because you’re still hungry with just the juice.
Most people are calorie-rich and not nutrient-deficient so you’re not solving the real problem with juicing. Yes, it can contribute to a healthier diet than not eating fruits or vegetables at all - but it does not take the place of whole foods. Not by a long shot, sorry.
