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Published on: May 12, 2022
1 minute read
By: Second Medic Expert

What Is A CT Scan?

A CT scan, or "computed tomography scan," is a diagnostic imaging test that uses X-rays to create detailed images of the inside of the body. It can be used to detect a variety of medical conditions, including tumors, internal bleeding, and bone fractures. A CT scanner consists of a large doughnut-shaped machine with a rotating X-ray beam. Patients are placed on a narrow table that slides into the center of the machine. The X-ray beam rotates around the patient, taking pictures from many different angles. These pictures are then combined by a computer to create 3D images of the inside of the body.

A CT scan, also known as a CAT scan, is a type of X-ray that uses computers to create detailed images of the inside of the body. A CT scan can be used to diagnose a variety of medical conditions, including cancers, tumors, and blood clots. It can also be used to help plan for surgery. Scan is an advanced medical imaging technique that uses X-rays to create detailed images of the inside of the body. It can be used to diagnose a variety of conditions, including cancer, heart disease, and internal injuries.

A CT scan typically takes less than five minutes to complete and does not involve any needles or injections. The images are interpreted by a radiologist who will then provide a report on the findings to the patient's doctor. It can be used to diagnose a variety of conditions, including tumors, infections, and internal injuries. A CT scan is also used to guide biopsies and other procedures. It can be used to diagnose a variety of medical conditions, including tumors, internal bleeding, and bone fractures.

CT scans are used to help diagnose medical conditions and to plan treatments. A CT scan is a type of imaging that uses X-rays to create cross-sectional images of the body. It stands for computed tomography, and it's a relatively new technology that was first developed in the 1970s.

A CT scanner sends X-ray beams through the body from many different angles. Then a computer calculates how the beams pass through tissue and create detailed images of what's inside. These images can be used to look for tumors, cysts, and other abnormalities. They can also help doctors diagnose conditions such as cancer, heart disease, and stroke.

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Lack of Sunlight and Mental Health Link: What You Should Know

Do you ever feel gloomy, tired, or anxious during the rainy season or in winter when sunlight is low? You're not alone. There’s a growing body of research that shows a strong link between lack of sunlight and mental health problems—including depression, anxiety, and fatigue.

In this blog, we’ll break down this connection in simple terms and help you understand why stepping outside for just 20 minutes of sunshine could boost your mood naturally.

Why Is Sunlight So Important?

Sunlight does more than just brighten our days. It plays a critical role in our physical and mental well-being by:

Regulating sleep through the circadian rhythm
Boosting serotonin, the “feel-good” hormone
Helping the body produce vitamin D, which supports mood and immunity
Improving alertness and reducing fatigue

When we don’t get enough sunlight—whether due to indoor lifestyles, long winters, or pollution—our mental health may suffer.

The Science Behind the Mood-Sunlight Connection

Sunlight impacts the brain's chemistry, especially serotonin and melatonin levels.

Serotonin improves mood, helps you feel calm, and supports focus.
Melatonin controls sleep and is produced when it's dark.

When you lack sunlight, serotonin production drops, while melatonin levels rise earlier in the day. This imbalance can cause:

Low energy
Sadness or depression
Irritability
Oversleeping
Poor concentration

What Is Seasonal Affective Disorder (SAD)?

Seasonal Affective Disorder (SAD) is a type of depression that occurs at certain times of the year—usually in winter when sunlight is limited.

Common SAD symptoms:

Feeling hopeless or down most of the day
Sleeping more than usual
Craving carbs and gaining weight
Losing interest in activities you usually enjoy
Low motivation and energy

SAD is real, and it affects millions worldwide—especially in places with long winters or low sunlight.

The Role of Vitamin D

Sunlight helps your skin make vitamin D, which is essential for your mood and immune function. Low levels of vitamin D are linked to:

Depression
Fatigue
Brain fog
Weak immunity

How do I know if I have low vitamin D?

You can take a Vitamin D blood test—available through platforms like SecondMedic.com with Thyrocare home collection.

Signs You May Be Affected by Low Sunlight

You feel sad or “off” during cloudy or winter days
You avoid going outdoors
You feel sleepy all day
You lose interest in daily tasks
You are deficient in vitamin D

If you check more than 2 of these, it’s time to focus on getting more light.

Simple Ways to Get More Sunlight and Boost Mental Health

1. Get Morning Sunlight

Spend 15–30 minutes in direct morning sunlight every day. This resets your internal clock and boosts serotonin.

2. Open Curtains and Use Natural Light Indoors

Let natural light into your home or workspace whenever possible.

3. Take a Walk Outside

Even a short daily walk can improve your mood.

4. Consider a Vitamin D Supplement

If your doctor confirms deficiency, a supplement may help restore mood balance.

5. Use Light Therapy

In areas with very little sunlight, light therapy lamps mimic natural light and can reduce SAD symptoms.

Related Lab Tests (Available on SecondMedic)

To understand how sunlight impacts your health, consider these lab tests:

Vitamin D Test

Check your vitamin D levels and confirm if sunlight deficiency is affecting your mood.

Thyroid Profile

Low sunlight can affect thyroid function, which is closely tied to mental health.

CRP Test (C-Reactive Protein)

To check if inflammation is contributing to fatigue or mood issues.

All of these are available for home sample collection through SecondMedic.com.

Conclusion

It’s easy to overlook how much sunlight affects our mind. But science clearly shows that regular exposure to natural light improves mood, energy, and mental clarity.

Whether you're feeling low or want to prevent future problems, just a few minutes of daily sunlight can make a big difference.

If you’re concerned about the lack of sunlight and mental health link, start by stepping outside—your brain will thank you.

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