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Published on: Jul 27, 2020
2 minute read
By: Dr Rajan Choudhary

Cardiovascular Risk Factors Explained

To understand why we asked you these questions, we have provided a short explanation of how these risk factors increase the chance of you having heart disease. In many cases, these factors filter down to common pathways and can work together to increase the probability and damage of heart disease. Having one factor can also make it more likely to develop a second – overweight patients and those who do not exercise are more likely to develop insulin resistance and become diabetic.

High Blood Pressure:

High Blood pressure is one of the most important risk factors for your cardiovascular health. 54% of strokes and 47% of heart disease worldwide can be attributed to high blood pressure. Ideally this should be kept below 140/90 if you are aged 80 or younger.

High blood pressure can cause damage to the linings of your arteries. This can make it easier for them to become blocked with fat, preventing blood from flowing to important organs. In the heart, this causes pain when exerting yourself.

Smoking:

Smoking is very bad for your health. We cannot stress this enough. Cigarette smoke contains thousands of chemicals, hundreds of toxic ones, and 69 that directly cause cancer. There are no health benefits to smoking, and it increases the risk of high blood pressure, heart attacks, strokes, heart failure, renal damage, as well as lung cancer, mouth cancer, oesophageal cancer, laryngeal cancer, colorectal cancer and more. If there is cancer, smoking increases its risk.

Lipids:

A diet high in lipids and cholesterol can increase your risk of cardiovascular disease. High cholesterol can account for as much as 56% of all heart disease cases, and 18% of strokes. Cholesterol can accumulate in the walls of your arteries, causing them to narrow. This can limit blood flow to important organs, causing pain or stroke like symptoms. This process is called atherosclerosis (artery hardening).

If this plaque ruptures, then a large clot can form, which can completely block an artery. If this happens in the coronary arteries of the heart it can cause a heart attack. In the brain it will cause a stroke. In both cases if parts of the heart or brain die, your health can deteriorate significantly. It can even cause death.

Diabetes:

Diabetes occurs when the body does not respond as well to insulin. This can increase the level of blood sugars in your body. At least 68% of people over 65 years old with diabetes die from heart disease. 16% die of stroke. If you have diabetes you are two to four times more likely to die from heart disease.

High blood sugars cause damage to the heart and arteries in multiple ways. The sugars themselves cause damage to small arteries supplying your heart and eyes, as well as damage to the nerves and kidneys themselves. In the eyes this diabetic retinopathy can cause worsening vision, in the kidneys, it can affect filtration and cause diabetic nephropathy.

It also increases the risk of high cholesterol and atherosclerosis, as well as causing chronic inflammation in the arteries and increasing the likelihood of blood clotting.

Weight and exercise:

Being overweight or obese, or not exercising daily, can increase your risk of heart disease. The effects of obesity are deeper than just additional fat and appearances. It can cause deep-seated changes to your body’s metabolism, leading to a condition called metabolic syndrome.

Obesity can cause your blood cholesterol levels to rise, due to the high amount of fat in your diet and also deposited around your body. This can also increase insulin resistance and therefore lead to diabetes. Finally, a large amount of fat tissue needs more blood to supply it with oxygen. The heart needs to pump harder to meet this demand, putting it under strain, and it can cause your blood pressure to rise.

Exercise acts in the opposite way. It reduces the amount of cholesterol in your blood, reduces your risk of diabetes and can lower your blood pressure.

Family History:

If you have a family history of heart disease, you are unfortunately at a higher risk of having heart disease yourself. This does depend on whether it is a close family member who has been diagnosed, and the age they were diagnosed. The younger their diagnosis, the closer the family relation, the stronger the link.

This is because your genes can influence the likelihood of you developing some of the risk factors we have listed above. There is no single gene, it is usually a combination of genes, each one subtly increasing the risk until it has an effect on your health.

You cannot change your genes, but you can change the other modifiable risk factors we have discussed above.

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Fever for 3 Days ? Should You Visit a Doctor or Wait

A fever lasting three days raises valid concern for patients and caregivers alike. While many febrile episodes resolve independently, a persistent fever lasting 72 hours warrants careful evaluation. Understanding when to seek medical attention and when watchful waiting is appropriate can prevent unnecessary complications and guide timely clinical intervention.

Should You Visit a Doctor If Fever Lasts for 3 Days?

A fever persisting for three consecutive days in adults generally requires medical evaluation, particularly when body temperature exceeds 103°F (39.4°C) or when additional symptoms such as breathlessness, severe headache, or rash are present. In children under five years, medical consultation is recommended after 48 to 72 hours of unresolved fever regardless of severity. Physicians advise against self-managing a three-day fever without professional assessment in high-risk populations.

Clinically, a three-day fever threshold is significant because most viral infections producing fever resolve within 48 to 72 hours. Fever persisting beyond this window may indicate a bacterial infection, an underlying inflammatory condition, or a secondary complication requiring targeted diagnostic workup. In the Indian clinical context, endemic infections such as dengue, typhoid, and malaria must be considered as potential etiologies when fever extends beyond 72 hours.

Common Causes of Persistent Fever in Adults and Children

Persistent fever lasting three or more days may originate from a range of infectious and non-infectious etiologies. Identifying the underlying cause is essential for selecting appropriate treatment.

Infectious Causes:

Viral infections: Influenza, dengue fever, chikungunya, COVID-19
Bacterial infections: Typhoid fever (enteric fever), urinary tract infections, pneumonia, tuberculosis
Parasitic infections: Malaria (particularly relevant in tropical regions of India)

Non-Infectious Causes:

Autoimmune or inflammatory conditions
Drug-induced fever (fever as an adverse drug reaction)
Post-vaccination fever (typically resolves within 48 hours)

Condition	Typical Fever Duration	Key Associated Symptoms
Viral fever	3 to 5 days	Body ache, fatigue, runny nose
Dengue fever	5 to 7 days	Severe joint pain, rash, low platelet count
Typhoid fever	7 to 14 days	Abdominal pain, diarrhea or constipation, rose spots
Malaria	Cyclical pattern	Chills, sweating, rigors
Urinary tract infection	Variable	Burning urination, flank pain

What to Do When Fever Does Not Go Down After 3 Days

When fever does not subside after 72 hours, the immediate recommended course of action is to consult a general physician or internist for clinical assessment. Antipyretic medications such as paracetamol (acetaminophen) can manage symptom discomfort but do not treat the underlying cause. Blood investigations including a complete blood count (CBC), malarial antigen test, and dengue NS1 antigen test are standard first-line diagnostics in India.

Beyond seeking medical consultation, patients should maintain adequate hydration, rest, and nutritional intake. Oral rehydration is particularly important in a tropical climate where fever accelerates fluid loss. Specialists caution against self-prescribing antibiotics without laboratory confirmation, as indiscriminate antibiotic use contributes to antimicrobial resistance, a significant public health concern in India. Clinical data supports early laboratory testing as the most effective step when fever persists beyond three days.

Warning Signs That Require Immediate Medical Attention

Certain symptoms accompanying a three-day fever indicate medical emergencies requiring immediate hospital evaluation rather than home management.

Patients or caregivers should seek emergency care if any of the following are present:

Fever above 104°F (40°C) that does not respond to antipyretics
Severe headache with neck stiffness (possible meningitis)
Difficulty breathing or chest pain
Skin rash appearing alongside fever (possible dengue or viral exanthem)
Altered consciousness, confusion, or seizures
Persistent vomiting preventing oral hydration
Fever in infants below three months of age
Fever in immunocompromised patients (those on chemotherapy, steroids, or with HIV)
Signs of dehydration: sunken eyes, dry mouth, reduced urine output

In children, febrile seizures can occur at temperatures above 102°F (38.9°C). While often self-limiting, any seizure associated with fever requires urgent pediatric evaluation.

Can a 3-Day Fever Resolve Without Medical Treatment?

In otherwise healthy adults, a mild to moderate fever (below 102°F) lasting three days caused by a self-limiting viral infection can resolve without specific medical treatment. The immune system typically clears common viral pathogens within three to five days. Supportive care including rest, hydration, and antipyretics is sufficient in low-risk cases.

However, resolution without medical treatment is not advisable for children under five, adults above 65, pregnant women, or individuals with chronic conditions such as diabetes or heart disease. Clinical evidence consistently indicates that delayed diagnosis in these populations increases the risk of serious complications. In regions with high prevalence of vector-borne diseases such as dengue and malaria, assuming a self-limiting viral cause without testing carries significant risk. Medical consultation remains the safest and most clinically sound approach when fever persists beyond three days.

Medical Disclaimer

This content is intended for educational and informational purposes only and does not constitute medical advice, diagnosis, or treatment. Readers experiencing persistent fever or related symptoms should consult a qualified healthcare professional for evaluation and management.

If you are facing similar health concerns, consult expert doctors online through the SecondMedic app or visit your nearest SecondMedic Health Hub for in-person care

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