Drinking coffee in the morning is a waste: it has poor refreshing effect and hurts stomach

Making a cup of coffee during working hours, smelling alcohol and aroma, aftertaste bitter and sour, waking up passion for work with caffeine seems to be a good choice. Do you know when coffee is best? How many cups of coffee a day? In addition to dispelling fatigue, what other "surprise" effects can coffee bring to our body? China Economic Network Xiaobian collected practical knowledge about office workers drinking coffee for you. If you like this one, come and have a look!

With the popularity of coffee culture in China, many urban white-collar workers choose to get up and enjoy a cup of fragrant coffee in the morning light, opening the prelude to a busy day. China Economic Network Xiaobian channel summary experts suggest that, in fact, before breakfast, breakfast period is not the best time to drink coffee, not only may affect gastrointestinal health, but also can not maximize the refreshing effect of caffeine.

Drinking coffee before breakfast can cause stomach ulcers for a long time

Some beauty women believe that drinking coffee on an empty stomach in the morning can eliminate stool detoxification and can also have the effect of losing weight. Is that true? Li Yanling, director of nutrition department of the First Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, told the media that drinking coffee on an empty stomach will stimulate the stomach and stomach, to a certain extent, it can clear the stool, but long-term drinking is easy to lead to stomach ulcer and other diseases.

Li Yanling said that the reason why drinking coffee on an empty stomach can have the effect of losing weight is that after a night's rest in the stomach, when drinking coffee on an empty stomach in the morning, the exciting ingredients in coffee will stimulate the stomach, thus affecting the normal nutrient absorption of breakfast, eventually leading to weight loss. However, this weight loss method is more extreme, long-term fasting coffee, even if the gastrointestinal mucosa function is strong people, accumulated over time also easy to lead to gastric ulcer, gastritis and other adverse symptoms.

Coffee at breakfast is the worst pick-me-up.

Steven Miller, a neuroscientist at the University of Health Sciences Unified Services in Maryland, found in 2013 that drinking coffee between 8 a.m. and 9 a.m., when cortisol levels peak in the body, is not optimal for pick-me-up and can lead to caffeine tolerance.

Cortisol is an important hormone that helps regulate the body clock and increase alertness. Cortisol levels rise and fall, rising in the morning and falling about an hour later. Miller's study found that cortisol levels peak between 8 a.m. and 9 a.m. on average.

Miller believes coffee after this peak is better because caffeine in coffee boosts cortisol production when cortisol levels drop. Drinking coffee when cortisol levels are high is wasteful and tends to create caffeine tolerance, meaning you need to drink one more cup to achieve the same refreshing effect. One of the main principles of pharmacology is to use drugs only when needed, otherwise drug tolerance may occur,"in other words, the same cup of coffee, morning drinking may be less effective."

Some nutritionists claim that drinking coffee at breakfast speeds up the heart rate and causes stomach contractions. Breakfast sugar intake will be quickly absorbed by the body, causing intense hunger. At this time, people will become irritable, absent-minded, and do not want to do anything except eat.

Best time: 9:30-11:30 am

According to Steven Miller's calculations, the best time to drink coffee each day is between 9:30 and 11:30 a.m. During this time period, the effect of caffeine interacting with cortisol reached its optimum. Cortisol levels peak again between 12 noon and 1 p.m. and between 5:30 p.m. and 6:30 p.m., he said, meaning coffee consumption at these times is less refreshing.

In addition, the body's cortisol content will also be related to people's physique and rest time. Cortisol levels peak earlier in the morning than in the lie-in, so coffee is best drunk earlier, and later in the morning.

Drink less coffee after dinner.

There are also different opinions about the best time to drink coffee. Some researchers believe that afternoon coffee works best, helping to offset the distraction caused by lunch. However, whether it is coffee after morning or coffee after lunch, it avoids the stimulation caused by coffee on an empty stomach, promotes gastrointestinal motility, helps digestion, and can decompose high-calorie and high-fat foods eaten.

It is best not to drink coffee after dinner to prevent sleep. If you want to drink coffee all night, you may accidentally drink too much, which is not good for your health.