Scientists have told why drinking coffee before breakfast is dangerous

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In this case, the drink can have a bad effect on glucose metabolism. The good news is that sleep deprivation does not cause blood sugar to rise.

Many people drink coffee in the morning before doing anything else. Especially urgently you want to cheer up if the night’s sleep did not bring satisfaction. New research, published at British Journal of Nutritionhas shown that drinking coffee in the morning on an empty stomach can have potentially dangerous side effects. Those who drank it before breakfast had a decline in glucose metabolism.

The new study involved 29 young people. Each of them went through three experiments.

  1. After a normal night’s sleep, the participants received a sweet (sugar) drink, which played the role of breakfast in the experiment.
  2. The participants drank the sweet drink after a poor night’s sleep (scientists woke them up every half hour).
  3. After an equally poor sleep, the participants drank strong black coffee immediately upon waking. They got a sweet drink in half an hour.

Each time, participants were tested for their blood glucose levels after consuming a sugary beverage that matched the average breakfast in terms of calories.

After one night of poor sleep, the scientists found no deterioration in glucose metabolism in the study participants: it was the same as after normal sleep. The authors consider this conclusion encouraging. The fact is that research in recent years demonstrated opposite results: poor sleep for just one night was “blamed” for a significant deterioration in metabolism.

If participants drank coffee half an hour before breakfast after a night of poor sleep, their post-meal blood glucose levels increased by 50% compared to those days when the morning did not start with coffee.

Scientists point out that there is some paradox associated with coffee. On the one hand, population studies suggest that consumption is associated with good health. At the same time, some scientific studies link caffeine with the development of tissue resistance to insulin (this is a risk factor for the development of type 2 diabetes).

The new study, the authors say, shows that coffee after a tough night solves the problem of fatigue, but can create another: reduce the body’s tolerance to glucose from breakfast. They indicate that the likelihood of impaired glucose metabolism will be less if you drink coffee after breakfast.

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