Blue light emitted by devices like smartphones, computers, and televisions is becoming a major factor disrupting our sleep cycles. Research reveals that a significant number of Americans use electronic devices close to bedtime, contributing to poor sleep quality. Reducing exposure to blue light, particularly in the evening, is a simple yet effective way to help your body prepare for restful sleep.

What Is Blue Light?

How Does Blue Light Impact Circadian Rhythms?

Circadian rhythms are 24-hour cycles that control essential bodily functions, including sleep. Light is the primary factor that aligns these rhythms with day and night. Historically, exposure to sunlight during the day helped set our body clocks, signaling when to be awake and when to sleep. However, the widespread use of artificial lighting and electronic devices has introduced more light exposure after dark, disrupting these natural cycles.

Blue light, in particular, has the strongest impact on circadian rhythms. During daylight hours, blue light helps us feel alert by stimulating the brain, raising body temperature, and increasing heart rate. But in the evening, exposure to blue light can confuse the body’s internal clock, suppressing melatonin—the hormone responsible for making us feel sleepy. As a result, our brains may remain in “daytime mode,” preventing us from winding down for the night.

Health Consequences Of Disrupted Sleep

Persistent disruption of circadian rhythms can lead to a range of health issues, including metabolic disorders, poor mental health, and increased risk for conditions like depression and anxiety. Furthermore, the inability to sleep well at night affects cognitive performance, mood, and overall well-being. Chronic exposure to blue light in the evening may significantly contribute to these negative health outcomes.

Devices That Emit Blue Light

Many common devices in our daily lives emit blue light, including:

- Smartphones and tablets

- Computer monitors and laptops

- Televisions and e-readers

- LED and fluorescent lighting

- Video game consoles

How To Minimize Blue Light Exposure

To reduce the effects of blue light on your sleep, here are some practical strategies:

1. Turn off screens before bed: Try to avoid using electronic devices at least two to three hours before bedtime. Reducing screen time helps prevent blue light from interfering with melatonin production.

2. Adjust your lighting: Dim your home’s lights or switch to warmer-toned lighting in the evening. You can also use lamps with red or orange light, which are less likely to impact your circadian rhythms.

3. Night mode settings: Many smartphones and computers have a "night mode" feature that reduces blue light emission. Make use of these features to limit exposure in the hours leading up to bedtime.

4. Blue light-blocking glasses: Special glasses designed to filter out blue light may be helpful for some individuals. These glasses can block or reduce the melatonin-suppressing effects of blue light.

5. Apps for blue light reduction: There are several smartphone and computer apps available that reduce blue light emission, allowing you to use your devices before bed without disturbing your sleep.

6. Create a sleep-friendly environment: If you can’t control light sources in your bedroom, consider using an eye mask to block out ambient light and promote better sleep.

Women can play a major role in preventing as well as eliminating Chagas Disease, a potentially life-threatening neglected tropical disease that affects 8 million people globally and causes 10,000 deaths every year, according to UN agencies.

World Chagas Disease Day is observed every year on April 14 to raise awareness around the disease, and the impact it has on lives.

In a statement, the Pan American Health Organization (PAHO) and the Global Chagas Coalition urged health authorities to make women central to the fight against the disease and to empower them to make early detection, prevention, and care.

“Eliminating Chagas disease as a public health problem requires placing women at the center of diagnosis, treatment, and care strategies,” said Dr. Jarbas Barbosa, PAHO Director.

“Ensuring timely access to quality health services, particularly for women of reproductive age, is essential to prevent new infections and advance toward the elimination of congenital Chagas disease in the Region of the Americas,” he added.

What Is Chagas Disease?

Chagas disease, also known as American trypanosomiasis, is a illness caused by the parasite Trypanosoma cruzi, and is primarily transmitted by triatomine insect vectors.

It gets spread through

• oral transmission,
• blood transfusion,
• mother-to-child.
• through transplants of some organs (such as heart or kidney)
• through laboratory accidents.

If left untreated, one third of infected people—including women and the children they carry—will develop life-altering heart, digestive, and even neurological conditions, and may even become fatal.

Once endemic to 21 countries in Latin America, the disease has now spread globally due to migration. It is now a global health concern with cases found in 44 countries including the US, Canada, Europe, Australia, and Japan.

World Chagas Disease Day 2026: Theme

World Chagas Disease Day was celebrated for the first time in 2020.

The theme this year is “Women at the heart of care, protecting the next generation” and underscores the key role women play in family and community caregiving, as well as their greater interaction with health services, particularly during pregnancy.

Chagas Disease: Role Of Women

According to the World Health Organization (WHO), about 2 million women aged 15-44 years are living with Trypanosoma cruzi infection worldwide.

Congenital transmission or mother-to-child transmission remains a major challenge, occurring in about 3–5 percent of pregnancies. However, it also provides a key opportunity for effective intervention.

The transmission cycle of the disease can be effectively broken by

• Treating infected girls and women before pregnancy
• Strengthening screening in maternal and child health services
• Eaccess to diagnosis and treatment.
• Newborn screening can help diagnose and treat, with a cure rate exceeding 90 percent.
• Increase awareness at community and family levels.
• Avoid foodborne transmission

“On the contrary, it represents a strategic opportunity to strengthen more equitable, accessible, and responsive health systems that recognize and respect women’s needs.”

The BBC Breakfast host Naga Munchetty has opened up about her experience of suffering from a painful womb condition, known as the "evil twin sister of endometriosis".

The 51-year-old Naga Munchetty explained her condition as adenomyosis, which can cause extreme pain at any time. Munchetty added that she has faced the condition even while presenting her show, The Independent reported.

Naga Munchetty said that adenomyosis has caused her severe pain since she was in her teens, and she has “become conditioned to accept” it.

“If you’re curled up on the floor screaming, sweating, flooding, passing out, vomiting, that is debilitating. But you end up normalizing that pain.”

What Is Adenomyosis

Adenomyosis is an extremely painful condition, which affects the womb and causes the uterus to enlarge. Although it affects an estimated one in 10 women, it remains undiagnosed in most women.

It is a lesser-known but significantly debilitating gynecological disorder that is commonly mistaken for endometriosis.

Adenomyosis leads to debilitating symptoms such as

• intense pain
• heavy menstrual bleeding,
• cramps,
• abdominal bloating
• fertility issues.

Differences Between Endometriosis And Adenomyosis

Adenomyosis occurs when endometrial cells—typically restricted to the lining of the uterus—break through the myometrium, the muscular wall of the uterus.

Endometriosis, on the other hand, happens when tissue similar to the lining of the uterus grows outside the uterus. These tissues commonly develop on the ovaries, fallopian tubes, or the pelvic lining.

In contrast, adenomyosis is inside the uterus but produces serious complications. These out-of-place endometrial cells continue to act as they would in a regular menstrual cycle, becoming thick and shedding, which leads to internal bleeding, inflammation, and intense pain.

Adenomyosis: The Condition Without Treatment

Despite going to the doctors several times, Naga Munchetty was not diagnosed until recently, as she was led to believe the pain she was experiencing was “normal”.

No absolute cure for adenomyosis exists except for a hysterectomy, which involves the removal of the uterus. Nevertheless, several treatment options can alleviate symptoms and enhance quality of life. These include:

1. Pain Relief

Ibuprofen and naproxen, over-the-counter pain medications, are usually prescribed to relieve menstrual cramps and pain.

2. Hormonal treatment such as

• Birth control pills
• Hormonal IUD (Intrauterine Device)
• Progesterone therapy

GnRH agonists, such as Lupron, induce temporary menopause by suppressing estrogen production, thereby reducing adenomyosis symptoms. However, these injections can cause severe side effects, including mood swings, hot flashes, and bone density loss, making them unsuitable for long-term use.

4. Surgical Intervention

• Endometrial Ablation: This involves the removal of the uterine lining to manage heavy bleeding, but it is not a permanent solution and is not suitable for women who want to become pregnant.
• Uterine Artery Embolization (UAE): A non-surgical procedure that cuts off the blood supply to the affected areas, reducing the size of the adenomyotic tissue.
• Hysterectomy: The only permanent solution for adenomyosis, a hysterectomy is usually considered as a last option for women who have finished their childbearing years.

Hypertension, or high blood pressure, is caused by excessive salt intake; however, according to scientists, there are more reasons. Experts also blame a brain glitch. A part of the brain that makes us breathe while laughing or coughing could also cause a blood pressure spike, as per researchers from New Zealand and Brazil. This could explain why medication is not enough for controlling BP in some people. According to experts at the University of Auckland, there is a part of the brain that could cause high BP, thereby suggesting that the brain is responsible for hypertension.

Is the brain responsible for high BP?

Experts say that the lateral parafacial region is located in the brainstem. It is the oldest part of the brain and regulates heart rate, digestion, and breathing. Its action causes one to exhale during a cough, laugh, or workout. These actions are driven by abdominal muscles. Researchers also found that this area could connect to the nerves that tighten blood vessels and raise blood pressure. However, it is possible to reverse this action by inactivating this region.

What is hypertension?

Hypertension, or high blood pressure, is a condition wherein blood pushes against the walls of the blood vessels with too much force. Initially, it has no symptoms, but it is a silent killer. Over time, untreated high BP can lead to a stroke or a heart attack. While it is mostly believed to be a consequence of smoking, drinking alcohol, eating salty foods, and not exercising, experts have found other causes as well. As per research by the University of São Paulo in Brazil and the University of Auckland in New Zealand, published in the journal Circulation Research, rat brains had their brain cells in the lateral parafacial region switched off.

How is high BP triggered by the brain?

Researchers in the study successfully reactivated neurons in some rats and found that brain circuits ultimately raised BP. Experts mapped out what happened and compared it with rats that did not have hypertension. In the hypertensive group, lateral parafacial region neurons were helping with breathing but were also raising BP. This suggests that changes in breathing, which involve abdominal muscle contractions, can also trigger high BP. This is why patients with sleep apnoea experience interrupted breathing while sleeping and high blood pressure.

Apart from normal breathing, lateral parafacial region neurons are activated when oxygen levels are low. Experts also checked whether they could trigger the brainstem with medication. They noted that it was tricky because drugs would work on the entire brain and not a specific region. It could be activated by signals from the neck cells near the carotid artery. These can be safely targeted with medication.

How to control persistent high BP?

To control persistent high BP, medication every day is a must. But to intensify the benefits, try the following simple tricks:

1. Reduce salt intake
2. Meditation
3. Quit smoking
4. Lose weight
5. Limit alcohol intake