Caffeine can cause insomnia, nervousness, restlessness, nausea, increased heart rate, and other side effects. Larger doses might cause headache, anxiety, and chest pain. Caffeine is likely unsafe when used in very high doses. It can cause irregular heartbeat and even death.
Nervousness. Irritability. Frequent urination or inability to control urination. Fast heartbeat.
Regular use of more than 600 mg of caffeine might cause the short-term effects listed above. Long-term effects at this level may include chronic insomnia, constant anxiety, depression, and stomach problems. It can also cause high blood pressure or make high blood pressure worse.
The level of caffeine in your blood peaks about one hour later and stays at this level for several hours for most people. Six hours after caffeine is consumed, half of it is still in your body. It can take up to 10 hours to completely clear caffeine from your bloodstream.
Tea: Black and green teas provide safe doses of caffeine along with some health benefits from the antioxidants flavonoids they contain. Although caffeine contents vary, the average cup of black tea provides about 40 milligrams (compared to 100 to 120 milligrams in a cup of coffee).
Caffeine increases energy metabolism throughout the brain but decreases at the same time cerebral blood flow, inducing a relative brain hypoperfusion. Caffeine activates noradrenaline neurons and seems to affect the local release of dopamine.
The severity of symptoms vary from individual to individual, and most commonly include a headache, fatigue, decreased energy/activeness, decreased alertness, drowsiness, decreased contentedness, depressed mood, difficulty concentrating, irritability, and feeling foggy/not clearheaded.
“Caffeine can aggravate the symptoms of brain fog because, by using it excessively to help counteract the feeling of fatigue and lack of clarity, it can then impact your sleep, which in turn aggravates the symptoms even more,” explains Dr. McCarthy.
Studies have found caffeine can do both good and harm. People who regularly drink coffee may be less likely to develop chronic illnesses, such as cardiovascular disease, diabetes, Parkinson's disease and some cancers. A few studies suggest they are less likely to die from heart disease and other illnesses.
Choose Your Method: Cold Turkey or Gradual Weaning
The cold turkey method is the fastest way to quit caffeine. The downside is you may be out of commission for a few days while your body readjusts. Plan to start your first caffeine-free day on a weekend or holiday.
While the side effects of caffeine and anxiety can be alike, you can't get anxiety from caffeine directly. But, drinking coffee can make anxiety symptoms worse. Research shows that in people with panic disorder, caffeine consumption raises the risk of having a panic attack and increases levels of anxiety.
Your Overall Mood Levels Will Increase
Many people who quit caffeine find that the boost they experience in their sleep quality results in them feeling happier and more energized.
Coffee contains caffeine, which is a stimulant that can boost mood and energy levels. The caffeine in coffee works by increasing the levels of certain chemicals in the brain, such as dopamine and norepinephrine, which can lead to feelings of happiness and euphoria.
In the study, published in the American Medical Association's JAMA Internal Medicine, researchers analyzed the participants' reported coffee consumption, medical histories, and smoking and drinking habits, and found that coffee drinkers were between 10 and 15 percent less likely to die during that period than non- ...
Theobromine
In many ways, theobromine is actually a much healthier and more effective stimulant than caffeine. Theobromine is a natural stimulant that affects a person's central nervous system when consumed. This keeps a person from feeling overly alert or jittery when consuming it.
There are several ingredients that can give you that warming, earthy taste of coffee without the caffeine. Mushroom elixirs have been gaining traction as a coffee substitute, as has raw cacao. Both are dark in color like coffee but contain many healthy antioxidants.
These findings suggest that caffeine, not coffee itself, can impact glucose metabolism, which can raise blood sugar levels. People with high blood sugar may experience headaches, fatigue, trouble concentrating, increased thirst, or frequent urination until their blood sugar levels return to normal.