Skipping breakfast, drinking black coffee on an empty stomach, and consuming sugary juices may negatively impact blood sugar regulation, metabolism, and cardiovascular health, according to recent research.
Three common morning habits may do more than shape the start of the day; they can also affect blood sugar, metabolism and heart health. The most concerning, experts say, are routinely skipping breakfast, drinking strong black coffee before eating, and replacing food with sweet bottled juice.
Research on breakfast has found that people who eat in the morning can show different energy use and glucose control from those who do not. A study cited by Time, published in the American Journal of Clinical Nutrition, found that skipping breakfast was linked with higher blood glucose after lunch and signs of greater inflammation. Observational studies have also associated a regular habit of missing breakfast with a higher risk of cardiovascular disease, although that does not prove breakfast omission is the direct cause.
Coffee on an empty stomach is another habit that gets a mixed verdict. Healthline and the Cleveland Clinic both note that caffeine before food can increase stomach acid and may worsen heartburn, while also causing a temporary rise in cortisol, the stress hormone. For most people, that is not considered dangerous, but people who notice jitteriness, digestive discomfort or unusual blood sugar swings may do better to wait until after breakfast. The effects can also depend on how much caffeine is consumed and on individual sensitivity.
The third habit is starting the day with a sugary packaged juice instead of a proper meal. Such drinks usually contain little fibre, so the sugar enters the bloodstream quickly. Regularly consuming large amounts of sweetened drinks has been linked with a higher risk of type 2 diabetes, while whole fruit offers natural sugar along with fibre and other nutrients. That makes fruit a better option for many people trying to keep morning energy steadier.
Disclaimer: This content is for informational purposes only and is not intended to be a substitute for professional medical judgment, advice, diagnosis, or treatment.
