When choosing a coffee bean, first look at its appearance. Generally, good coffee beans have a complete and full appearance. Pickled coffee beans have a strong aroma. If they are not pickled, the smell of coffee beans will be bad.

Coffee beans produced in different places have different colors and smells. For example, coffee beans in Brazil and other places are full, so the taste is sweet but not sour. Coffee beans eaten raw in Colombia and other places will produce sour and sweet characteristics due to environmental reasons, so we should be optimistic about the region when choosing.

Precautions for coffee beans

If patients with renal failure have hyperkalemia, they need to cooperate with potassium restriction diet. Coffee contains a high amount of potassium, so patients in this situation should not drink coffee.

Patients with peptic ulcer should not drink coffee. Caffeine stimulates gastric acid secretion, relaxes smooth muscle blood vessels of digestive system, accelerates food metabolism and reduces the nutritional value of food.

People with diabetes can't drink coffee. Caffeine can reduce insulin secretion in pancreas, reduce glucose tolerance, increase insulin secretion and raise blood sugar, so if you have diabetes, you need to stay away from coffee.