Both Poppi and Olipop are “prebiotic” sodas, meaning they theoretically feed the good bacteria in your gut with the fiber ...

O’Meara added, "Probiotics are typically found in fermented foods like kimchi, sauerkraut, kombucha, or even sourdough.

Polar has no shortage of flavors rounding out its seltzer lineup. We taste-tested 20 of these flavors and ranked them all ...