When the study participants first drank their first coffee, their blood glucose levels increased by about 50% after they drank a carbohydrate rich drink to replace food. The problem is that drinking coffee in the morning seems to have a negative effect on blood sugar levels during the rest of the day. The good news is that there is no negative impact on blood sugar levels when participants first had a spare drink and then coffee. Simply put, blood sugar control is impaired when our body comes into contact with coffee, especially after a sleepless night. Do you always need a hot drink in the morning? Try this refreshing coffee substitute or choose a cup of coffee with roasted dandelions. Since 2002, Sarah has been involved in health and nutrition education, helping families integrate traditional nutrition principles into a modern home. As soon as the new diet routine – even a light breakfast before coffee – is introduced, the foundation is laid for the optimal scenario of stable, controlled blood sugar levels throughout the day, every day. When you wake up fresh, it becomes easier to change the habit of drinking coffee in the morning. Another study, this time from the British Food Journal warns coffee lovers not to drink a cup of Joe in the morning after breakfast. We could improve this by first eating and then drinking coffee, if we thought we still need it. In short, breakfast before we eat anything is twice as bad for our health. None of these coffee enhancers contain the amino acid L-tryptophan, which is the precursor of serotonin. And while a protein-rich breakfast is the best option, researchers have found that even a carbohydrate rich breakfast is better than nothing. Even with the addition of collagen and healthy fats in the form of bulletproof coffee. Lack of serotonin, in turn, affects the production of melatonin at night, which promotes sleepiness and good sleep.