I am following a low sugar (no, not in fear of diabetes) + homemade diet since quite some time.
Even if I have to, I'll drink energy drinks or soda once in two months, mainly in a party or marathons only!
Most of us know that Sugar, Caffeine and Vitamin-minerals are used in energy drinks for short, quick boost of energy.
Caffeine works against your natural sleep-cycle regulating hormones to make you FEEL ENERGETIC.
And then comes dear sugar, that actually fuels us with ENERGY.
What do we get? Some good energy supply to boost productivity (or whatever).
Consuming some times is fine I think. But regular consumption can wreck havoc after months or years. And then diagnostics will not probably point towards these old dietary culprits.
By Googling, one will get the cons of excess caffeine consumption. Ok, here's the main difference. Caffeine (to feel alert) + teaspoons and teaspoons of Sugar (to get energized) is used in Energy drinks while usual sugary drinks boast of sugar mainly.
But so much sugar can disrupt normal insulin production, overwhelm liver's capacity of depositing it to liver fat, cause many other complications young people are too shy of even thinking about.
And this can over the period of time cause everything - hypertension, obesity, cardiovascular degradation, ... name it.
And then, to support the storage, chemical isolation and flavoring of the drink, there are other chemicals added, you don't know if they will be good guests for us.
I've my daily food list for a day of energy.
Talking about fruit juices, even those are a no in terms of concentrated sugar (for the conscious), be it natural. What else we've got?
EDIT: Sorry for the long post XD