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Published on: Apr 04, 2020
1 minute read
By: Dr Vibhash Mishra

Corona Virus (COVID-19) Being Responsible

The world is in a state of panic with fear of Corona and perhaps rightly so. Official, semi-official and unofficial guidances are pouring in from all possible sources. Social media has been promoting the use of masks only for sufferers of Corona infection and those who are having symptoms of cough and fever. Some experts have gone to the extent of suggesting that the use of mask for members of the general public may even be harmful. It may promote a sense of complacency among people, a false sense of safety leading to negligence of other precautions. Masks may be so ill-fitting that the user has to touch it frequently to adjust it, which may lead to transmission of infection. The virus is supposed to be transmitted by droplets coughed out by the sufferers. The purpose of the mask used by these people is to stop passing on the droplets to others. While this notion seems to make sense, it may not be entirely true and the use of masks by people at large may still have some protective value. There may be people who are infected and not aware of it. Avoiding relatively close contact with such people at public places may not be easy in populous countries which are not locked down completely yet. Use of mask in that situation may provide some protection at least. After all the infected droplets need to be inhaled to cause further infection and a mask over the mouth and nostrils will prevent the inhalation to some extent. It seems, therefore, that discouraging people from using masks may be an irresponsible act. What should be emphasized instead is that using a mask is not the end of your responsibility towards protecting yourself and others. Other precautions are equally important. Following are a few examples:
1. If you have cough and/or fever, confine yourself indoors and avoid coming in contact with people, specially children, elderly and those with chronic illnesses.
2. Wash your hands well with soap and water frequently and certainly after touching anyone or anything.
3. Avoid touching your face and eyes unnecessarily.
4. Do not cough in the open or on your hands. Use a tissue or your sleeve instead. Bin the tissue immediately.
5. Avoid unnecessary travels.
6. Avoid public gatherings.
7. If you suspect you may be infected with Corona, do not use antibiotics, they will not be effective.
8. When interacting with strangers or those with cough/fever, stand at least three steps away.

Dr Vibhash Mishra, London, UK, Chief Medical Officer, Second Medic

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Health Problems Linked to Excessive Caffeine Intake: When Too Much Becomes Harmful

Caffeine is one of the most widely consumed stimulants in the world. Found in coffee, tea, energy drinks and many soft drinks, it is often used to improve alertness and combat fatigue. While moderate caffeine consumption can be safe for most people, understanding the health problems linked to excessive caffeine intake is important, especially as daily consumption levels continue to rise in India.

Urban lifestyles, long working hours and increased reliance on energy drinks have made caffeine overconsumption a growing public health concern.

How Caffeine Works in the Body

Caffeine stimulates the central nervous system by blocking adenosine, a chemical responsible for promoting sleep and relaxation.

This results in:

increased alertness
faster heart rate
heightened mental activity

However, overstimulation places stress on multiple body systems.

What Is Considered Excessive Caffeine Intake?

According to WHO and global health guidelines:

up to 400 mg per day is considered safe for most healthy adults

Excessive intake occurs when:

multiple caffeinated beverages are consumed daily
energy drinks are used frequently
caffeine is consumed late in the day

Many people unknowingly exceed safe limits.

Nervous System Overstimulation

Excess caffeine overstimulates the brain.

Common symptoms include:

restlessness
nervousness
tremors
irritability

Chronic overstimulation can worsen stress and reduce emotional stability.

Anxiety and Panic Symptoms

Caffeine increases adrenaline release.

This can:

trigger anxiety attacks
worsen panic disorder
increase feelings of unease

ICMR mental health studies note caffeine as a common trigger for anxiety symptoms in sensitive individuals.

Sleep Disruption and Insomnia

Sleep is one of the first systems affected.

Excessive caffeine:

delays sleep onset
reduces deep sleep
shortens total sleep duration

Even caffeine consumed 6–8 hours before bedtime can impair sleep quality.

Impact on Heart Health

High caffeine intake affects the cardiovascular system.

Possible effects include:

increased heart rate
palpitations
irregular heart rhythm

People with underlying heart conditions are particularly vulnerable.

Blood Pressure Elevation

Caffeine temporarily raises blood pressure.

Chronic excessive intake may:

worsen hypertension
increase cardiovascular risk

NFHS-5 data highlights rising hypertension prevalence in India, making caffeine moderation important.

Digestive System Problems

Caffeine stimulates stomach acid production.

This can cause:

acidity
heartburn
gastritis
bloating

People with sensitive digestion may experience symptoms even at lower doses.

Dependency and Withdrawal Symptoms

Regular high intake leads to caffeine dependence.

Withdrawal symptoms include:

headaches
fatigue
irritability
difficulty concentrating

Dependence reinforces overconsumption cycles.

Effect on Bone Health

Excessive caffeine:

increases calcium loss through urine
may affect bone density over time

This is particularly concerning for older adults and women.

Dehydration and Electrolyte Imbalance

Caffeine has a mild diuretic effect.

High intake without adequate hydration may lead to:

dehydration
muscle cramps
fatigue

Hot climates increase this risk.

Impact on Blood Sugar and Metabolism

Caffeine affects glucose metabolism.

Excessive intake:

worsens insulin sensitivity
increases stress hormone release

This may increase diabetes risk when combined with poor lifestyle habits.

Energy Drinks and Hidden Risks

Energy drinks often contain:

very high caffeine levels
added sugar
stimulants

Lancet reports associate energy drink overuse with heart rhythm disturbances and metabolic stress.

High-Risk Groups

Certain individuals should be especially cautious:

people with anxiety disorders
those with heart disease
pregnant women
individuals with sleep disorders

Safe limits may be lower for these groups.

Signs You May Be Consuming Too Much Caffeine

Warning signs include:

frequent palpitations
chronic insomnia
persistent anxiety
digestive discomfort
reliance on caffeine to function

These signals indicate the need for reduction.

How to Reduce Caffeine Intake Safely

Effective strategies include:

gradual reduction rather than abrupt stopping
switching to decaffeinated options
avoiding caffeine after mid-afternoon
improving sleep and nutrition

Small steps prevent withdrawal symptoms.

Healthier Alternatives for Energy

Better ways to improve energy include:

adequate sleep
balanced meals
hydration
regular physical activity

These support sustained energy without overstimulation.

Role of Preventive Health Awareness

Preventive healthcare focuses on:

identifying lifestyle triggers
reducing dependency habits

NITI Aayog highlights lifestyle modification as key to non-communicable disease prevention.

Long-Term Health Consequences of Ignoring Excess Intake

Chronic caffeine overuse increases risk of:

sleep disorders
anxiety and mood issues
heart rhythm problems
digestive disorders

These conditions often develop gradually.

Conclusion

The health problems linked to excessive caffeine intake extend beyond temporary jitters or sleep loss. Chronic overconsumption strains the nervous system, disrupts sleep, affects heart rhythm, worsens anxiety and impacts digestion and metabolism. While caffeine can be enjoyed safely in moderation, recognising personal limits and maintaining balance is essential for long-term health. Listening to early warning signs and adopting healthier energy habits can prevent serious health consequences.

References

World Health Organization (WHO) – Caffeine Intake and Health Guidelines
Indian Council of Medical Research (ICMR) – Nutrition and Mental Health Studies
National Family Health Survey (NFHS-5) – Hypertension and Lifestyle Risk Data
Lancet – Energy Drinks, Caffeine and Cardiovascular Effects
NITI Aayog – Preventive Health and Lifestyle Modification Reports
Statista – Caffeine Consumption Trends in India

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