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Published on: Jul 07, 2020
1 minute read
By: Dr Rajan Choudhary

Asymptomatic Carriers Of COVID

Why Asymptomatic carriers of COVID are as dangerous as symptomatic patients

Many countries have now begun enforcing masks for everyone to wear when out in public, in enclosed spaces, or on public transport. There is good evidence to support these measures, but unfortunately, some still show resistance to the idea. Whilst some reasons put forward are non-sensical (masks do not cause any noticeable or measurable decrease in oxygen delivery to the body), other people feel like they shouldn’t wear a mask because they do not have symptoms of COVID. And thus would not spread anything. Here we look at a recent publication in Nature, one of the most esteemed peer-reviewed scientific journals in the world, and what it shows us about the transmission of COVID in a population.

This study by Lavezzo et al looked at the suppression of the SARS-CoV-2 outbreak in the Italian municipality of Vo’. This municipality is 50 kilometers west of Venice with a population of just 3,416 people. It experienced its first casualty of COVID on the 21st of February, after which it underwent lockdown for 14 days. During this time data was collected on the clinical presentation and hospitalization of COVID patients, as well as other citizens through the contact tracing network.

In total 2,812 residents were tested in late February, with another 2,343 tests performed two weeks later at the end of lockdown. Nasal and throat swabs were taken to identify infected individuals. The study found only 2.6% of people were positive for COVID at the start of lockdown, which reduced to 1.2% two weeks later.

Out of this infected population, 42.5% were asymptomatic. They had no symptoms at the time of swab testing nor did they develop symptoms afterwards. When the viral load was measured between symptomatic and asymptomatic patients, there was little difference.

Evidence has pointed to a large asymptomatic population, and previous studies have shown it to be as high as 50% in some cases. Many would assume if a patient has no symptoms then they must have fought the infection before it became an issue, or had a very low viral load and therefore were not likely to spread it. This study shows it is simply not true. Asymptomatic carriers of COVID are likely to contribute to the transmission and spread of COVID amongst the population.

If you are asymptomatic you have as high a viral load as someone who is symptomatic. But there is no way to tell without a swab. You have as much of a potential to spread the infection to the vulnerable. Even in people who became symptomatic the height of transmission was found to be before the patient showed any symptoms.

So what does this mean? If you have COVID you are likely to spread it before you show any symptoms or any symptoms at all. We know masks are effective at significantly reducing the spread of COVID, by catching the water droplets that carry the SARS-CoV-2 Virus. Now that shops and public places are re-opening, the risk of spread is high.

Wear a mask. Stop the spread.

https://www.nature.com/articles/s41586-020-2488-1_reference.pdf suppression of a SARS article

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Simple Habits to Avoid High Cholesterol

High cholesterol is one of the leading causes of heart disease and stroke worldwide. In India, rising cholesterol levels are becoming more common due to sedentary lifestyles, unhealthy food habits, and stress. But the good news is—you can prevent high cholesterol naturally with a few simple habits.

In this blog, we’ll explore easy, everyday steps you can take to keep your cholesterol levels in check and protect your heart.

What Is Cholesterol?

Cholesterol is a fatty substance found in your blood. While your body needs some cholesterol to build cells and hormones, too much of the wrong type—called LDL (low-density lipoprotein)—can be harmful. It can build up in your arteries and increase your risk of heart disease and stroke.

There’s also HDL (high-density lipoprotein), which is the “good” cholesterol that helps remove LDL from your body.

Why High Cholesterol Is Dangerous

Clogs arteries and restricts blood flow
Increases risk of heart attacks and strokes
Can lead to high blood pressure
May affect kidney and liver function

The scariest part? High cholesterol usually has no symptoms. That’s why it’s called a silent killer and must be managed before problems begin.

7 Simple Habits to Avoid High Cholesterol

1. Eat Fiber-Rich Foods Daily

Soluble fiber binds with cholesterol in the gut and removes it from your body.

Best foods for fiber:

Oats and barley
Apples, pears, and oranges
Beans and lentils
Flaxseeds and chia seeds

Tip: Start your morning with a bowl of oatmeal and add a fruit—it’s a heart-healthy breakfast!

2. Stay Active Every Day

Physical activity boosts HDL (good cholesterol) and burns fat that raises LDL.

What to do:

Walk briskly for 30 minutes a day
Try yoga, cycling, or dancing
Use stairs instead of the lift
Take short walks after meals

Even small movements throughout the day matter.

3. Cut Down on Saturated & Trans Fats

These fats raise your LDL cholesterol quickly.

Avoid:

Fried food, chips, and baked snacks
Ghee-heavy sweets
Processed foods with “hydrogenated oils”

Choose instead:

Olive oil or mustard oil
Grilled or baked foods
Fresh fruits and nuts as snacks

4. Manage Your Stress

Stress affects your hormones and may raise your cholesterol over time.

Try this:

Practice deep breathing or meditation
Do relaxing hobbies like reading or gardening
Take tech breaks and sleep 7–8 hours daily
Talk to someone if you’re feeling overwhelmed

A calm mind supports a healthy heart.

5. Stay Hydrated and Cut Sugary Drinks

Water helps regulate body functions and weight, which both impact cholesterol.

Do this:

Drink 8–10 glasses of water daily
Avoid soft drinks and energy drinks
Switch to herbal teas or infused water

Too much sugar can raise triglyceride levels, a type of fat in your blood.

6. Quit Smoking and Limit Alcohol

Smoking lowers good cholesterol and damages arteries. Alcohol, in excess, can also spike cholesterol and blood pressure.

Tip:
Even reducing smoking or drinking frequency helps your heart function better.

7. Get Regular Cholesterol Tests

Don’t wait for symptoms. Get your lipid profile checked every year, especially if you have:

A family history of heart disease
Diabetes or high blood pressure
Obesity or unhealthy lifestyle habits

Suggested Test:
Lipid Profile Test by Thyrocare via SecondMedic.com – includes LDL, HDL, total cholesterol, and triglycerides with home sample collection.

Normal Cholesterol Levels:

Type	Ideal Range
Total Cholesterol	Below 200 mg/dL
LDL (Bad)	Below 100 mg/dL
HDL (Good)	Above 40 mg/dL (men), 50 mg/dL (women)
Triglycerides	Below 150 mg/dL

Tips to Book a Test via SecondMedic:

Visit www.secondmedic.com
Search for Lipid Profile Test – Thyrocare
Select home collection
Fast for 9–12 hours before the test
Get results in 24–48 hours

Bonus Tips

Replace white rice with brown rice or millets
Choose low-fat milk and curd
Snack on almonds or walnuts
Cook at home more often than eating out
Maintain a healthy weight

Conclusion

You don’t need fancy diets or harsh treatments to manage cholesterol. Just a few simple daily habits can make a big difference in protecting your heart.

By eating better, moving more, managing stress, and staying hydrated, you can keep your cholesterol in check without medication in many cases.

Make your heart health a priority starting today!

Start following these simple habits to avoid high cholesterol and keep your heart happy for years to come.

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