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Second Dose Of AstraZeneca COVID-19 Vaccine: FAQs About Blood Clots, Safety, Risks And Symptoms

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Second Dose Of AstraZeneca COVID-19 Vaccine: FAQs About Blood Clots, Safety, Risks And Symptoms


Rare but serious blood clots that have been linked the AstraZeneca COVID-19 vaccine have many people — especially those who have already had one dose of the vaccine — looking for information. Here are answers to some key questions.

If I had a first dose of the AstraZeneca COVID-19 vaccine, should I have concerns about safety?

As long as there is a risk, you should always be aware and informed. A risk of very serious harm, including death, does exist, though it is very small: about one in 55,000 for the first dose.

We now have a much better understanding of how to diagnose and treat clotting due to COVID-19 vaccines, called vaccine-induced thrombotic thrombocytopenia, or VITT (also sometimes called vaccine-induced prothrombotic immune thrombocytopenia, or VIPIT) when it does occur. Death rates among people who experience VITT have been estimated at 20 to 50%, but may be improving as knowledge increases. The Public Health Agency of Canada monitors all adverse events following COVID-19 vaccination.

It’s important that everyone who has had the AstraZeneca vaccine understands that it was the right thing to do. It is an excellent and effective vaccine, and being vaccinated is an important act to protect not just yourself, but your community by slowing and eventually stopping the pandemic.

Should I get a second dose of AstraZeneca? If so, when?

Getting the second dose of any two-step vaccine is very important. That’s what cements the memory of the immune response. We know from clinical trials that the first dose does not prevent all infections. It prevents death from infection. The second dose boosts the immune response to almost completely protect you from getting any infection. That second dose also greatly reduces your ability to carry or spread the virus at all.

In terms of timing, evidence is still emerging, but the best guidance regarding AstraZeneca is that a 12 to 20-week gap between first and second doses is ideal, much as it is with most vaccines.

Are the risks different for a second dose?

The risk of a blood clot after a second dose is about one in 600,000, which is one-tenth the risk of clotting after an initial dose. If you were comfortable getting the first dose, you should feel good about going ahead and continuing to help the community bring the pandemic closer to its end. In addition, knowing the symptoms associated with the vaccine-related clots allows for timely recognition and immediate treatment.

How serious a health risk are blood clots that can follow a vaccine?

In those very rare cases where blood clots follow vaccination, they can be very serious, and can be fatal. The good thing is that knowledge is advancing quickly, especially in terms of diagnosing and treating these clots when they do occur.

Earlier in the vaccine rollout, the risk of death in the rare cases of clotting was 60 to 80%. Today, it’s 20%.

At the beginning of the rollout, patients had no way of knowing what a vaccine-related clot was or what to look for. That may have been a key factor in the higher death rate. Now that this issue is known and the symptoms can be identified, the risk of death is much lower. As we’ve progressed in understanding how this issue presents itself, people are being diagnosed and treated much sooner and more effectively.

Is it safe to get a different vaccine for my second dose?

Canada’s National Advisory Committee on Immunization recommends that for a second dose, you should stay with a vaccine made with the same technology “platform” as the first. If you first got AstraZeneca, which is a form of viral vector vaccine, it’s recommended that you get it again. If it is not available, Johnson and Johnson is another viral vector vaccine.

If you had a vaccine based on an mRNA technology platform — Pfizer or Moderna — you can have either one of those two for your second dose. More data is emerging, and mixing and matching platforms could ultimately be proven to be safe and effective, but for now, the recommendation is to stay with the same technology.

Are there any symptoms people should be on the lookout for that may indicate a blood clot?

The symptoms of VITT are well documented and include the following, which occur four or more days after vaccination:

  • Severe and persistent headaches.
  • Severe and persistent blurry vision.
  • Leg swelling.
  • Difficulty breathing.
  • Abdominal pain.
  • Bruising beyond the vaccination site.

It is important to seek prompt medical care in these cases. It is also important to note that minor fever, headache, fatigue and pain at the site of the vaccination are common with all vaccines in the first one or two days and are not causes for concern.

Who is at risk from clotting related to the AstraZeneca vaccine?

Clotting events are still so rare that it is very difficult to identify any particular risk factors. Although it appears that a slightly higher number of women have experienced clotting, the number of cases isn’t large enough to accurately assess whether sex might affect risk.

The AstraZeneca vaccine is not recommended for people who have had a previous case of heparin-induced thrombocytopenia, or of rare cerebral venous sinus thrombosis clots. A family history of clotting does not appear to be relevant to vaccine risks since the mechanisms are completely different.

Dawn ME Bowdish, Canada Research Chair in Aging & Immunity, McMaster University and Ishac Nazy, Associate Professor of Medicine and Scientific Director of McMaster Platelet Immunology Laboratory , McMaster University

This article is republished from The Conversation under a Creative Commons license. Read the original article.





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Feeling Tired All The Time? Possible Causes And Solutions

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Long days of work, lack of sleep, and stress at the office can be the most common factors that make you feel tired. However, feeling “tired all the time” (TATT) without known reasons can be an indication of an underlying health issue that needs immediate attention.

Finding the exact cause of the lingering tiredness can be the first step toward solving the symptom.

Health conditions that cause fatigue:

1. Anemia – Anemia is one of the most common causes of fatigue. A person who has anemia does not have enough red blood cells in the body, causing symptoms such as tiredness, dizziness, feeling cold and crankiness.

Most often, anemia is caused by iron deficiency. Hence, the condition can be best resolved by including iron-rich foods in the diet and use of iron supplements.

2. Sleep Apnea – It causes the body to stop breathing momentarily during sleep. The condition can affect the quality of sleep and hence make you feel fatigued.

For milder cases of sleep apnea, lifestyle changes such as losing weight or quitting smoking can help solve the sleep disorder. In more severe cases where there is an obstruction in breathing, surgeries and therapies can help.

3. Diabetes – A person who has diabetes has changes in blood sugar level, which can cause fatigue. A patient who is already on diabetic medication can also experience tiredness as a side effect of the medication.

Early identification and taking the correct treatment is the key to managing diabetes. Losing extra weight and having a healthy diet also help in the treatment.

4. Thyroid – Thyroid diseases can be due to an overactive or an underactive thyroid gland. In people who have an underactive thyroid (hypothyroidism), the metabolism slows down leading to symptoms such as lethargy and fatigue. In people with an overactive thyroid (hyperthyroidism), the metabolism speeds up leading to fatigue and difficulty sleeping.

Right diet and lifestyle choices, along with medications, can help in thyroid management.

5. Infections – A person can show symptoms of fatigue when the body is fighting a viral or bacterial infection. Infections ranging from the flu to HIV can cause tiredness.

Along with fatigue, other symptoms such as fever, headache, body aches, shortness of breath and appetite loss can also accompany the infection. Treating the symptoms and taking adequate rest helps in faster recovery.

6. Food allergies – Fatigue may be an early warning sign of hidden food allergies and autoimmune disorders such as celiac disease. Identifying the allergen using a food allergy test or through an elimination diet can help in allergy treatment.

7. Heart disease – If you feel exhausted from an activity that used to be easy, then it is good to check your heart health, as fatigue can be an indication of underlying heart disease.

8. Depression/ anxiety – Fatigue can also be an indicator of a mental health disorder such as depression or anxiety. A combination of medication and psychotherapy can help relieve symptoms.

Lifestyle causes

Apart from serious health conditions, certain lifestyle habits such as dehydration, poor diet, stress and insufficient sleep can cause exhaustion. Having a well-balanced diet, regular exercise and routine sleep can help solve fatigue caused by lifestyle habits.

Published by Medicaldaily.com



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How To Overcome Your Sleep Debt And Reclaim Energy

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Picture this: you’re burning the midnight oil, studying or binge-watching your favorite shows, all at the expense of a good night’s sleep. Have you ever stopped to think about the toll it takes on your body and mind? The consequences can be more serious than you might realize.

Not getting enough sleep can translate into a multitude of issues, including weight gain, lack of focus, tiredness, a haze of confusion, and even depression. If you too are encountering similar issues lately then chances are you have a sleep debt.

Wondering what is sleep debt?

People from 13-18 years of age need 8 hours of sleep, whilst adults beyond that age will require at least 7 hours of snooze.

Sleep debt is a collection of the total hours you haven’t slept or traded your sleep for something else. Sleep debt keeps piling up as a person falls short of the total hours of sleep recommended for an adult, according to the Centers for Disease Control and Prevention.

And when you keep letting go of your sleep for other activities, the body adapts to the new normal and effects start to reflect on the energy levels, which deplete.

“However, like every other debt out there, this too has a repayment option,” Dr. Kunal Kumar, medical director of the Sleep Center at Einstein Medical Center in Philadelphia, told Livestrong.

Below are some expert-vetted ways you can pay back the sleep debt. (Courtesy: Livestrong and Sleepfoundation)

Just like financial debt, imagine sleep debt as a debt you owe to your body. It needs to be repaid. The good news is that catching up on sleep is indeed possible.

  • Maintain a set sleep schedule: Overhauling the sleep schedule is a pretty difficult task to achieve, and it’s best to do that gradually. Create a set sleep schedule by making some small changes to your routine. Instead of making abrupt shifts in your bedtime or wake-up time, adjust them gradually by 15 to 30-minute increments.
  • Minimize your gadget usage: Wind down activities and minimize electronic usage before bed to promote better sleep. Relax and prepare for quality sleep by dimming the lights and setting an alarm for 30 minutes to an hour before bed.
  • Reshuffle your sleeping arrangements: Are you finding it hard to get a good night’s sleep due to excessive sweating? Well, here’s a handy solution: consider upgrading to a cooling mattress or opting for cooling sheets. These innovative sleep essentials can help regulate your body temperature, and keep you comfortably cool throughout the night, ensuring a more blissful slumber. Memory foam pillows can work wonders in relieving neck and back discomfort in case you are struggling with backache.
  • Improve the bedroom environment: Create a sleep-friendly bedroom environment by adjusting the temperature for comfort, and blocking out disruptive lights, or noises that might disturb your restful slumber. And if your mattress, pillow, or sheets are worn out or no longer providing the support you need, consider treating yourself to new ones.

Published by Medicaldaily.com



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Omega-3 Fatty Acids Slow The Progression Of Amyotrophic Lateral Sclerosis: Study

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Omega-3 fatty acids are known for a range of health benefits, from promoting brain and heart health to reducing inflammation and protection against several chronic conditions.

In a new study, researchers found that omega-3 acids, especially the type found in foods like flaxseeds, walnuts, chia seeds, canola oil and soybean oil, can slow down the progression of amyotrophic lateral sclerosis (ALS).

It is a debilitating nervous system disease that gradually worsens over time and can be fatal. The condition results in a loss of muscle control and affects the nerve cells in the brain and spinal cord. It is also known as Lou Gehrig’s disease after the baseball player who was diagnosed with it.

The initial symptoms of the disease include muscle weakness, difficulty in walking and hand movements. The symptoms can slowly progress to difficulties with chewing, swallowing, speaking and breathing.

The exact cause of ALS is not known. However, around 10% of people get it from a risk gene passed down from a family member. It is estimated that more than 32,000 people in the U.S. live with the condition.

In the latest study, researchers from Harvard T.H. Chan School of Public Health in Massachusetts evaluated 449 people living with ALS in a clinical trial. The team assessed the severity of their symptoms, the progression of their disease, along with the levels of omega-3 fatty acids in their blood, for 18 months.

The study suggested that alpha-linolenic acid (ALA), a type of omega-3 found in plants, is particularly beneficial in slowing the progression of ALS. The participants with the highest levels of ALA had a 50% reduced risk of death during the study period compared to those with the lowest levels of ALA.

Researchers also found a reduction in death risk in participants who had eicosapentaenoic acid, the type of omega-3 fatty acid found in fatty fish and fish oil, and linoleic acid found in vegetable oils, nuts and seeds.

A previous study conducted by the same team suggested that a diet high in ALA and higher blood levels of the nutrient could reduce the risk of developing the condition.

“In this study, we found that among people living with ALS, higher blood levels of ALA were also associated with a slower disease progression and a lower risk of death within the study period. These findings, along with our previous research suggest that this fatty acid may have neuroprotective effects that could benefit people with ALS,” said Kjetil Bjornevik, the lead author of the study.

Published by Medicaldaily.com



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