Features
Boosting immune system to fight Covid-19: Is it possible?
By Saman Gunatilake
Emeritus Professor of Medicine
University of Sri Jayewardenepura
Immune boosting is a trending topic these days with the COVID-19 pandemic. The concept of “immune boosting” is scientifically misleading and often used to market unproven products and therapies. There is no current evidence that any product or practice will contribute to enhanced “immune boosting” protection against COVID-19. This lack of evidence has not stopped wellness gurus with vested interests, and commercial entities from propagating notions of boosting immunity. Internet and popular press are flooded with messages of this nature resulting in an abundance of misinformation circulating online. The public is increasingly going online for health information and questions persist around the kinds of inaccurate information the public is absorbing and the impacts it may be having on health-related decisions and actions.
What are Immunity Boosters?
Immunity boosters are products which claim to be able to support your immune system so you aren’t as likely to get sick. Additionally, if you do get sick, taking the supplements will make your illness pass faster. There is no scientific and clinical evidence in humans to support claims of ‘immunity boosting’ foods and other products which supposedly enhance immunity. The body has its own immune system which fights against viral and bacterial invaders. With a normal immune system, we are capable of protecting ourselves against most infections but with certain situations the infection manages to overcome our immune system and cause serious disease and even death. The current Covid 19 pandemic is such a situation. We are in the grip of a spike in infection with over 1000 cases per day seen during the last few days. Total deaths from the pandemic in our country is nearing 700 and the total cases up to now amounts to around 111,800.
With no scientifically established cure for Covid-19 yet and the available recommended treatments limited to severe cases and being not so effective, recovery in most cases has largely been reliant on the human body’s natural defence, the immune system. Fighting the infection by boosting our immune systems had been the buzzword since the beginning of the pandemic. This has led to many misconceptions, misinforming and misleading the public. Improving the diet, taking vitamins and herbal products, lifestyle changes are proposed as ways of doing this. As a result, the market has been flooded with an array of products that claim to boost one’s immunity.
One of the common misconceptions is that high doses vitamin supplements and other minerals and nutrients boost one’s immunity. Ayurvedic concoctions, fruit juices, vitamin pills, zinc tablets have flooded the market with an array of products that claim to boost one’s immunity. Promoters of these products indicate that the body’s natural defences can be strengthened or enhanced by the consumption of certain foods, herbal products or the use of specific products.
Is there robust scientific evidence to support these claims for immune system boosting? The answer is no. Immunology experts believe that there is no way for healthy adults to improve their immunity through foods or other products. The immune system is very complex and these claims about boosting immunity are irrational and unscientific.
The Immune System
The immune system is activated by things that enter the body that the body doesn’t recognise as its own such as bacteria, viruses or even particles that cause allergy, like food, drugs and pollen. Most pathogens have a surface protein on them that the immune system recognizes as foreign. These are called antigens. Then the immune system sets in motion a complex process that fights the invader – this is the immune response.
There are two kinds of immune responses in the human body. The innate immune response is the first to kick in and is common among all animals. It is non-specific and immune cells mount an immediate attack on antigens. The response is subsequently replaced by the adaptive immune response, which tailors defences based on the kind of pathogen that is being encountered. The innate immune response consists of white blood cells like neutrophils, macrophages, and monocytes, while the adaptive response involves Lymphocytes -T cells and B cells, as well as antibodies produced by these cells as a specific response to the invader’s antigens. Stimulated immune systems release chemical proteins known as pro-inflammatory cytokines in large numbers, which can cause soreness and pain. So boosting immunity may lead to unwanted inflammations causing swelling, redness and pain locally and fever and other organ damage.
The Internet searchers will find that the myth of “boosting immunity” is extremely pervasive. Of the approaches that claimed to boost immunity, the top ones were diet, fruit, vitamins, antioxidants, probiotics, minerals. Interestingly, vaccines, the only proven method that enhances our immune response to an infection is ranked very low. One of the biggest misconceptions is that consuming more vitamins than required helps the immune system. It has been proven, time and again, that mega-doses of Vitamin C or of any kind of vitamin are not effective on the body at all. Another misconception is that zinc tablets can play a role in mitigating Covid-19. However, this isn’t backed by evidence either.
Zinc is not an immunity booster. It is an essential mineral for the body which is a ‘cofactor’ for a large number of proteins and enzymes. A cofactor is a non-protein chemical compound or metallic ion that is required for an enzyme’s activity as a catalyst. Like zinc, vitamin C is also a cofactor, and is important for the body to function. So, if you have a deficiency of these essential micronutrients, you will face a problem. But, if a person does not have any such deficiency, an excess amount of these taken does not improve one’s chances of fighting off a virus. Vitamin C and Zinc deficiencies are very rare unless someone is starving or following an extreme diet depleted of nutrients. Iron and Iodine deficiencies are seen in communities and more than immune deficiency they cause other problems.
An extremely active immune system, can also be problematic. In severe Covid-19 cases, the body launches an aggressive immune response resulting in the release of a large amount of pro-inflammatory proteins. This is known as a cytokine storm and is one of the common causes of death in Covid-19 patients. A cytokine storm occurs when the body’s immune system goes into an overdrive, killing healthy cells and causing organ failures. Several research studies suggest that the cytokine storm causes lung injury and multi-organ failure. So, if this is the case boosting the immune system in a Covid patient is not a wise thing to do.
Market interests add to the myth
The truth is natural immunity in normal people cannot be improved. There are immunocompromised individuals with a poor immunity who are susceptible to infections due to certain illnesses, and how can they stay safe from this highly infectious virus that spreads rapidly? The most effective way is by keeping our communities safe.
We can do this by attending to the public hygiene of the population exposed to the infection. Providing safe drinking water, providing clean air, providing adequate nutrition — are ways of keeping the people healthy and strong to fight any infections. There are parts of our country fortunately not as bad in India, without access to these basic health requirements. Achieving social distancing in these communities that live in overcrowded households is impossible.
This background, and a new infection with no treatment, led to various interested parties with good and bad intentions in promoting the myth of immune boosting. They have become self-proclaimed experts exploiting this crisis, putting forth all kinds of miraculous non allopathic substitutions. As allopathic medications to be approved, a rigorous procedure has to be observed, they resorted to the easier approach of promoting quick remedies in traditional and herbal products. Unproven ‘natural’ remedies came to the fore in our country in this background where people felt helpless. The vaccine, the only proven way of boosting the immunity of an individual and the population against a specific disease was not available around this time.
There are added dangers in such situations. There may be a lot of drug-drug interactions. If people are consuming allopathic medicines, and then also start consuming these medicinal herbs, the components of the herb will interact with the drug resulting in unknown complications. These unapproved medications can have toxic effects on your kidney, liver and other organs.
Even during the Spanish Flu pandemic in 1918 companies jumped in on the opportunity to hail themselves as immunity boosting drug producers. However, no products were ever proven to be effective in improving immune responses.
Maintaining a normal immune system
A poor immune system is seen in people with certain ailments. Some are born with defects in their immune system and they are known as immunodeficiencies. People with chronic illnesses like diabetes and auto immune disorders are also vulnerable to catch illnesses easily as their immune systems are weak. People on immunosuppressant medications like steroids and cancer drugs also have a weakened immune system and easily catch infections and develop serious complications easily.
Lifestyle is key for keeping your immune system normal and ready to act with an adequate response when necessary. For now, there are no scientifically proven direct links between lifestyle, exercise and enhanced immune function. Researchers are exploring the effects of diet, exercise and stress on the immune response. There are indeed processes that do affect our immune cells and improve their responses. The best one of them, perhaps, is exercise. Many studies have shown that moderate exercise of less than 60 minutes can improve the circulation of anti-inflammatory cytokines, neutrophils, natural killer cells, T cells and B cells. This can work effectively — not for combating diseases at a specific point in time, but to combat stress hormones in general, which can suppress immune cell function. Extremely high intensity exercise leads to a short duration of compromised immunity, increasing risk for disease in this time period. This is one of the reasons marathon runners or professional sports persons tend to catch a fever or cold in the days following a sporting event. Regular exercise is known to improve cardiovascular health, lowers blood pressure, helps control body weight. Therefore, adopting general healthy-living strategies make sense since they are likely to have other proven health benefits. But whether they help to boost the immune system is a controversial issue with no proven answers.
The immune system can also be compromised by many lifestyle habits such as smoking, which is known to affect T and B cells, among a host of other parameters. Diseases like diabetes by themselves result in compromised immune systems. This is why diabetic patients are particularly susceptible to infections. Obesity is another condition with a weak immune system as it predisposes to the development of other illnesses like diabetes and hypertension. There appears to be a connection between poor nutrition and immunity and this is a problem especially in the elderly. Poor nutrition can lead to micronutrient malnutrition, in which a person becomes deficient in some essential vitamins and trace minerals. Deficiency of these can result in a poor immune response to infections. Older people tend to eat less and often have less variety in their food. In them dietary supplements may have some beneficial effects and they should discuss this with their doctors. Taking mega doses of vitamins do not help and can even be harmful.
Every part of your body, including your immune system that fights against infections function better when protected from unwanted damage and bolstered by healthy-living styles. These are – not smoking, taking a diet high in fruit and fibre, exercising regularly, maintaining a healthy weight, avoiding alcohol or consuming in moderation, getting adequate sleep, washing hands regularly, developing good food habits, minimizing stress.
However, there currently exists no evidence of any consumable foods or products being able to induce an improvement in immune function. Although some preparations have been found to alter some components of the immune system, so far there is no evidence that they actually boost your immunity to the point where you are protected against infection. The only scientifically proven way to boost immunity, the immune system, and an immune response is through vaccinations. Vaccines prime your immune system to fight off infections before they take hold in your body.
So, where do we stand today? Vaccines to boost our immunity against Covid, prevention of spread and catching infection by proper wearing of masks, washing hands and maintaining social distance. These are the scientifically proven methods and others appear to be market-driven myths.
Features
Misinterpreting President Dissanayake on National Reconciliation
President Anura Kumara Dissanayake has been investing his political capital in going to the public to explain some of the most politically sensitive and controversial issues. At a time when easier political choices are available, the president is choosing the harder path of confronting ethnic suspicion and communal fears. There are three issues in particular on which the president’s words have generated strong reactions. These are first with regard to Buddhist pilgrims going to the north of the country with nationalist motivations. Second is the controversy relating to the expansion of the Tissa Raja Maha Viharaya, a recently constructed Buddhist temple in Kankesanturai which has become a flashpoint between local Tamil residents and Sinhala nationalist groups. Third is the decision not to give the war victory a central place in the Independence Day celebrations.
Even in the opposition, when his party held only three seats in parliament, Anura Kumara Dissanayake took his role as a public educator seriously. He used to deliver lengthy, well researched and easily digestible speeches in parliament. He continues this practice as president. It can be seen that his statements are primarily meant to elevate the thinking of the people and not to win votes the easy way. The easy way to win votes whether in Sri Lanka or elsewhere in the world is to rouse nationalist and racist sentiments and ride that wave. Sri Lanka’s post independence political history shows that narrow ethnic mobilisation has often produced short term electoral gains but long term national damage.
Sections of the opposition and segments of the general public have been critical of the president for taking these positions. They have claimed that the president is taking these positions in order to obtain more Tamil votes or to appease minority communities. The same may be said in reverse of those others who take contrary positions that they seek the Sinhala votes. These political actors who thrive on nationalist mobilisation have attempted to portray the president’s statements as an abandonment of the majority community. The president’s actions need to be understood within the larger framework of national reconciliation and long term national stability.
Reconciler’s Duty
When the president referred to Buddhist pilgrims from the south going to the north, he was not speaking about pilgrims visiting long established Buddhist heritage sites such as Nagadeepa or Kandarodai. His remarks were directed at a specific and highly contentious development, the recently built Buddhist temple in Kankesanturai and those built elsewhere in the recent past in the north and east. The temple in Kankesanturai did not emerge from the religious needs of a local Buddhist community as there is none in that area. It has been constructed on land that was formerly owned and used by Tamil civilians and which came under military occupation as a high security zone. What has made the issue of the temple particularly controversial is that it was established with the support of the security forces.
The controversy has deepened because the temple authorities have sought to expand the site from approximately one acre to nearly fourteen acres on the basis that there was a historic Buddhist temple in that area up to the colonial period. However, the Tamil residents of the area fear that expansion would further displace surrounding residents and consolidate a permanent Buddhist religious presence in the present period in an area where the local population is overwhelmingly Hindu. For many Tamils in Kankesanturai, the issue is not Buddhism as a religion but the use of religion as a vehicle for territorial assertion and demographic changes in a region that bore the brunt of the war. Likewise, there are other parts of the north and east where other temples or places of worship have been established by the military personnel in their camps during their war-time occupation and questions arise regarding the future when these camps are finally closed.
There are those who have actively organised large scale pilgrimages from the south to make the Tissa temple another important religious site. These pilgrimages are framed publicly as acts of devotion but are widely perceived locally as demonstrations of dominance. Each such visit heightens tension, provokes protest by Tamil residents, and risks confrontation. For communities that experienced mass displacement, military occupation and land loss, the symbolism of a state backed religious structure on contested land with the backing of the security forces is impossible to separate from memories of war and destruction. A president committed to reconciliation cannot remain silent in the face of such provocations, however uncomfortable it may be to challenge sections of the majority community.
High-minded leadership
The controversy regarding the president’s Independence Day speech has also generated strong debate. In that speech the president did not refer to the military victory over the LTTE and also did not use the term “war heroes” to describe soldiers. For many Sinhala nationalist groups, the absence of these references was seen as an attempt to diminish the sacrifices of the armed forces. The reality is that Independence Day means very different things to different communities. In the north and east the same day is marked by protest events and mourning and as a “Black Day”, symbolising the consolidation of a state they continue to experience as excluding them and not empathizing with the full extent of their losses.
By way of contrast, the president’s objective was to ensure that Independence Day could be observed as a day that belonged to all communities in the country. It is not correct to assume that the president takes these positions in order to appease minorities or secure electoral advantage. The president is only one year into his term and does not need to take politically risky positions for short term electoral gains. Indeed, the positions he has taken involve confronting powerful nationalist political forces that can mobilise significant opposition. He risks losing majority support for his statements. This itself indicates that the motivation is not electoral calculation.
President Dissanayake has recognized that Sri Lanka’s long term political stability and economic recovery depend on building trust among communities that once peacefully coexisted and then lived through decades of war. Political leadership is ultimately tested by the willingness to say what is necessary rather than what is politically expedient. The president’s recent interventions demonstrate rare national leadership and constitute an attempt to shift public discourse away from ethnic triumphalism and toward a more inclusive conception of nationhood. Reconciliation cannot take root if national ceremonies reinforce the perception of victory for one community and defeat for another especially in an internal conflict.
BY Jehan Perera
Features
Recovery of LTTE weapons
I have read a newspaper report that the Special Task Force of Sri Lanka Police, with help of Military Intelligence, recovered three buried yet well-preserved 84mm Carl Gustaf recoilless rocket launchers used by the LTTE, in the Kudumbimalai area, Batticaloa.
These deadly weapons were used by the LTTE SEA TIGER WING to attack the Sri Lanka Navy ships and craft in 1990s. The first incident was in February 1997, off Iranativu island, in the Gulf of Mannar.
Admiral Cecil Tissera took over as Commander of the Navy on 27 January, 1997, from Admiral Mohan Samarasekara.
The fight against the LTTE was intensified from 1996 and the SLN was using her Vanguard of the Navy, Fast Attack Craft Squadron, to destroy the LTTE’s littoral fighting capabilities. Frequent confrontations against the LTTE Sea Tiger boats were reported off Mullaitivu, Point Pedro and Velvetiturai areas, where SLN units became victorious in most of these sea battles, except in a few incidents where the SLN lost Fast Attack Craft.

Carl Gustaf recoilless rocket launchers
The intelligence reports confirmed that the LTTE Sea Tigers was using new recoilless rocket launchers against aluminium-hull FACs, and they were deadly at close quarter sea battles, but the exact type of this weapon was not disclosed.
The following incident, which occurred in February 1997, helped confirm the weapon was Carl Gustaf 84 mm Recoilless gun!
DATE: 09TH FEBRUARY, 1997, morning 0600 hrs.
LOCATION: OFF IRANATHIVE.
FACs: P 460 ISRAEL BUILT, COMMANDED BY CDR MANOJ JAYESOORIYA
P 452 CDL BUILT, COMMANDED BY LCDR PM WICKRAMASINGHE (ON TEMPORARY COMMAND. PROPER OIC LCDR N HEENATIGALA)
OPERATED FROM KKS.
CONFRONTED WITH LTTE ATTACK CRAFT POWERED WITH FOUR 250 HP OUT BOARD MOTORS.
TARGET WAS DESTROYED AND ONE LTTE MEMBER WAS CAPTURED.
LEADING MARINE ENGINEERING MECHANIC OF THE FAC CAME UP TO THE BRIDGE CARRYING A PROJECTILE WHICH WAS FIRED BY THE LTTE BOAT, DURING CONFRONTATION, WHICH PENETRATED THROUGH THE FAC’s HULL, AND ENTERED THE OICs CABIN (BETWEEN THE TWO BUNKS) AND HIT THE AUXILIARY ENGINE ROOM DOOR AND HAD FALLEN DOWN WITHOUT EXPLODING. THE ENGINE ROOM DOOR WAS HEAVILY DAMAGED LOOSING THE WATER TIGHT INTEGRITY OF THE FAC.
THE PROJECTILE WAS LATER HANDED OVER TO THE NAVAL WEAPONS EXPERTS WHEN THE FACs RETURNED TO KKS. INVESTIGATIONS REVEALED THE WEAPON USED BY THE ENEMY WAS 84 mm CARL GUSTAF SHOULDER-FIRED RECOILLESS GUN AND THIS PROJECTILE WAS AN ILLUMINATER BOMB OF ONE MILLION CANDLE POWER. BUT THE ATTACKERS HAS FAILED TO REMOVE THE SAFETY PIN, THEREFORE THE BOMB WAS NOT ACTIVATED.

Sea Tigers
Carl Gustaf 84 mm recoilless gun was named after Carl Gustaf Stads Gevärsfaktori, which, initially, produced it. Sweden later developed the 84mm shoulder-fired recoilless gun by the Royal Swedish Army Materiel Administration during the second half of 1940s as a crew served man- portable infantry support gun for close range multi-role anti-armour, anti-personnel, battle field illumination, smoke screening and marking fire.
It is confirmed in Wikipedia that Carl Gustaf Recoilless shoulder-fired guns were used by the only non-state actor in the world – the LTTE – during the final Eelam War.
It is extremely important to check the batch numbers of the recently recovered three launchers to find out where they were produced and other details like how they ended up in Batticaloa, Sri Lanka?
By Admiral Ravindra C. Wijegunaratne
WV, RWP and Bar, RSP, VSV, USP, NI (M) (Pakistan), ndc, psn, Bsc (Hons) (War Studies) (Karachi) MPhil (Madras)
Former Navy Commander and Former Chief of Defence Staff
Former Chairman, Trincomalee Petroleum Terminals Ltd
Former Managing Director Ceylon Petroleum Corporation
Former High Commissioner to Pakistan
Features
Yellow Beatz … a style similar to K-pop!
Yes, get ready to vibe with Yellow Beatz, Sri Lanka’s awesome girl group, keen to take Sri Lankan music to the world with a style similar to K-pop!
With high-energy beats and infectious hooks, these talented ladies are here to shake up the music scene.
Think bold moves, catchy hooks, and, of course, spicy versions of old Sinhala hits, and Yellow Beatz is the package you won’t want to miss!
According to a spokesman for the group, Yellow Beatz became a reality during the Covid period … when everyone was stuck at home, in lockdown.
“First we interviewed girls, online, and selected a team that blended well, as four voices, and then started rehearsals. One of the cover songs we recorded, during those early rehearsals, unexpectedly went viral on Facebook. From that moment onward, we continued doing cover songs, and we received a huge response. Through that, we were able to bring back some beautiful Sri Lankan musical creations that were being forgotten, and introduce them to the new generation.”
The team members, I am told, have strong musical skills and with proper training their goal is to become a vocal group recognised around the world.
Believe me, their goal, they say, is not only to take Sri Lanka’s name forward, in the music scene, but to bring home a Grammy Award, as well.
“We truly believe we can achieve this with the love and support of everyone in Sri Lanka.”
The year 2026 is very special for Yellow Beatz as they have received an exceptional opportunity to represent Sri Lanka at the World Championships of Performing Arts in the USA.
Under the guidance of Chris Raththara, the Director for Sri Lanka, and with the blessings of all Sri Lankans, the girls have a great hope that they can win this milestone.
“We believe this will be a moment of great value for us as Yellow Beatz, and also for all Sri Lankans, and it will be an important inspiration for the future of our country.”
Along with all the preparation for the event in the USA, they went on to say they also need to manage their performances, original song recordings, and everything related.

The year 2026 is very special for Yellow Beatz
“We have strong confidence in ourselves and in our sincere intentions, because we are a team that studies music deeply, researches within the field, and works to take the uniqueness of Sri Lankan identity to the world.”
At present, they gather at the Voices Lab Academy, twice a week, for new creations and concert rehearsals.
This project was created by Buddhika Dayarathne who is currently working as a Pop Vocal lecturer at SLTC Campus. Voice Lab Academy is also his own private music academy and Yellow Beatz was formed through that platform.
Buddhika is keen to take Sri Lankan music to the world with a style similar to K-Pop and Yellow Beatz began as a result of that vision. With that same aim, we all work together as one team.
“Although it was a little challenging for the four of us girls to work together at first, we have united for our goal and continue to work very flexibly and with dedication. Our parents and families also give their continuous blessings and support for this project,” Rameesha, Dinushi, Newansa and Risuri said.
Last year, Yellow Beatz released their first original song, ‘Ihirila’ , and with everything happening this year, they are also preparing for their first album.
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