Caffeinated coffee may not be ideal if you have type O blood, as it can lead to acid reflux, stomach aches, bloating and gas. But not all acids are bad for our bodies – there are low acid beans that can be brewed for reduced impact on type o blood types.

kopi luwak beans, commonly referred to as cat poop coffee due to their preparation by Indonesian palm civets, possess low levels of acidity – something both human experts and electronic devices can detect – with less harmful acids present and more beneficial acids like malic acid which increases energy production and citric acid which enhances iron absorption while strengthening bones.