What are the long term effects of caffeine?
Caffeine is LIKELY SAFE for most adults when used appropriately. Caffeine is POSSIBLY UNSAFE when taken by mouth for a long time or in fairly high doses. Caffeine can cause insomnia, nervousness and restlessness, stomach irritation, nausea and vomiting, increased heart rate and respiration, and other side effects.
Up to 400 milligrams (mg) of caffeine a day appears to be safe for most healthy adults. That's roughly the amount of caffeine in four cups of brewed coffee, 10 cans of cola or two "energy shot" drinks. Keep in mind that the actual caffeine content in beverages varies widely, especially among energy drinks.
- Caffeine causes a short but sudden increase in blood pressure. Research has not shown that drinking 3-4 cups of coffee a day increases the risk of kidney disease or increases rate of decline of kidney function. However, moderating how much coffee you drink is a good idea.
- Here are 20 dangers of partial and total caffeine overdose, in order from the first symptoms to be exhibited to the severe, later stage ones.
- Increased Heartbeat.
- Muscle Twitches and Spasms.
- Rambling Thought and Speech.
- Heart Palpitations.
- When we drink coffee, caffeine binds to our brain's adenosine receptors, preventing the chemical from binding with the receptors and making us tired. And, caffeine prevents dopamine from getting reabsorbed into your system, leaving the feel-good chemical hanging around in your brain longer.
Coffee containing caffeine can cause insomnia, nervousness and restlessness, stomach upset, nausea and vomiting, increased heart and breathing rate, and other side effects. Consuming large amounts of coffee might also cause headache, anxiety, agitation, ringing in the ears, and irregular heartbeats.
- Studies have shown that coffee may have health benefits, including protecting against Parkinson's disease, type 2 diabetes and liver disease, including liver cancer. Coffee also appears to improve cognitive function and decrease the risk of depression. However, the research appears to bear out some risks.
- Coffee has some health benefits, however if you choose to drink caffeinated beverages, we recommend green and/or black tea over coffee because of tea's many health benefits. Caffeine itself has no nutritional value and for most people is mildly addictive.
- You may go from 0 to 60 in about 10 minutes, but you hit top speed after about 45 minutes, when 99 percent of the caffeine from your coffee, tea or energy drink has entered the bloodstream fully. Then it takes many hours for the caffeine to dissipate.
Caffeine acts as a central nervous system stimulant. When it reaches your brain, the most noticeable effect is alertness. You'll feel more awake and less tired, so it's a common ingredient in medications to treat or manage drowsiness, headaches, and migraines. For example, too much caffeine can give you headaches.
- The Mayo Clinic state that consuming more than 500-600 mg of caffeine a day may lead to insomnia, nervousness, restlessness, irritability, an upset stomach, a fast heartbeat and even muscle tremors. However, previous research has linked even moderate amounts of caffeine to negative health effects.
- Some stimulants are very addictive, such as cocaine and nicotine. Caffeine is also a stimulant. Caffeine is usually not dangerous when used carefully. Depressants are a group of drugs that slow down the activity in the brain and body.
- Here are seven hidden and surprising sources of caffeine that serve up an unexpected jolt:
- Protein Bars.
- Decaf Coffee.
- Non-Cola Sodas.
- Ice Cream & Yogurt.
- Candy Bars.
- Hot Chocolate.
- Fancy Water.
Updated: 4th October 2018