There is actually a ton of scientific evidence that proves how terrible these drinks are for people to consume. Here’s some of it:
Busuttil and Willoughby demonstrated that high-consumption (2 cans or more) of energy drinks (EDs) in one day was associated with higher diastolic blood pressure as well as increased frequency of palpitations, rising with co-ingestion of alcohol, even in healthy individuals without cardiovascular risk factors .
Likewise, Svatikova et al. recently reported that the consumption of a commercially available ED increased glucose levels, blood pressure and norepinephrine in young healthy adults, thus suggesting that these acute hemodynamic and adrenergic changes may increase cardiovascular risk .
Not long ago, we also published about accumulating evidence that energy drinks (EDs) overconsumption in adolescents, especially consumed before or during sports practice, may trigger a number of atypical disorders for this age range including palpitations, arrhythmias, anxiety, nausea, shortness of breath, loss of control and imminent death, and development of uncontrollable phobias and fears, between others.
I did find a study to prove the negative effects of soda:
“rats consuming gaseous beverages over a period of around 1 year gain weight at a faster rate than controls on regular degassed carbonated beverage or tap water. This is due to elevated levels of the hunger hormone ghrelin and thus greater food intake in rats drinking carbonated drinks compared to control rats. Moreover, an increase in liver lipid accumulation of rats treated with gaseous drinks is shown opposed to control rats treated with degassed beverage or tap water. In a parallel study, the levels of ghrelin hormone were increased in 20 healthy human males upon drinking carbonated beverages compared to controls.”
Source: Dureen Samandar Eweis, Fida Abed, Johnny Stiban, Carbon dioxide in carbonated beverages induces ghrelin release and increased food consumption in male rats: Implications on the onset of obesity, Obesity Research & Clinical Practice, Available online 20 February 2017.