The worst three drinks for your health are caffeinated milkshakes from coffee shops; energy drinks, and sodas. Those caffeinated milkshakes from coffee shops combine an incredibly volatile combination of caffeine, sugar, fat and dairy, all of which make your brain and your body really happy for a few minutes, but over time they add an incredible amount of calories, saturated fat, dairy, caffeine, and sugar, which all upset your body's inflammation issues, and they can exacerbate any hormone imbalances over time. Energy drinks combine too much caffeine and too much sugar into one beverage. And they should especially be avoided by children and teenagers who do not need that extra caffeine hit, and it will set them up for adrenal fatigue and hormonal disregulation sooner than they need to experience. Sodas, whether they are sugar free or regularly sweetened, also have a combination of caffeine and phosphoric acid in them. Phosphoric acid puts your body into a more acidic state, and the way your body can alkalaynize that acidity is by drawing more calcium out of your bones to balance that acidity. Over time, this can lead to osteoporosis and bone loss so avoiding sodas is the best idea for anyone concerned with bone loss.