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Rate of heart attacks and strokes was lower after COVID-19 vaccination: Study

Previous research has found that the incidence of rare cardiovascular complications is higher after some COVID-19 vaccines

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Image credit: Alexandra_Koch from Pixabay

A new study involving nearly the entire adult population of England found that the incidence of heart attacks and strokes was lower after receiving the COVID-19 vaccination compared to before vaccination or without vaccination.

The study published in Nature Communications reported that the occurrence of arterial thromboses, including heart attacks and strokes, was up to 10% lower in the 13 to 24 weeks following the first dose of a COVID-19 vaccine. After the second dose, the incidence was reduced by up to 27% with the AstraZeneca vaccine and by up to 20% with the Pfizer/BioNTech vaccine.

The pattern of common venous thrombotic events, such as pulmonary embolism and deep venous thrombosis in the lower limbs, followed a consistent trajectory.

Research conducted by the Universities of Cambridge, Bristol, and Edinburgh, and supported by the British Heart Foundation (BHF) Data Science Centre at Health Data Research UK, analyzed de-identified health records from 46 million adults in England between 8 December 2020 and 23 January 2022. Data scientists compared the incidence of cardiovascular diseases following vaccination with the incidence before or without vaccination during the first two years of the vaccination program.

“We studied COVID-19 vaccines and cardiovascular disease in nearly 46 million adults in England and found a similar or lower incidence of common cardiovascular diseases, such as heart attacks and strokes, following each vaccination than before or without vaccination. This research further supports the large body of evidence on the safety of the COVID-19 vaccination programme, which has been shown to provide protection against severe COVID-19 and saved millions of lives worldwide,” Dr Samantha Ip, Research Associate at the Department of Public Health and Primary Care, University of Cambridge, said in a statement.

Previous research has found that the incidence of rare cardiovascular complications is higher after some COVID-19 vaccines. For instance, cases of myocarditis and pericarditis have been reported following mRNA-based vaccines like the Pfizer/BioNTech vaccine, and vaccine-induced thrombotic thrombocytopenia has been associated with adenovirus-based vaccines like the AstraZeneca vaccine. This study supports these findings but importantly did not identify any new adverse cardiovascular conditions linked to COVID-19 vaccination, providing further reassurance that the benefits of vaccination outweigh the risks.

The incidence of cardiovascular disease is higher after COVID-19, especially in severe cases. This may explain why the incidence of heart attacks and strokes is lower in vaccinated individuals compared to unvaccinated individuals, although further explanations are beyond the scope of this study, according to a press statement published by University of Cambridge.

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Society

Is India’s Clean Cooking Gas Model the Future for the Global South?

The Indian model, backed by smart subsidies and sustainable policies, provides a scalable solution for developing nations striving for clean cooking access

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Image by Aristal Branson from Pixabay

At the just concluded India Energy Week 2025 (February 11-14), India’s Union Minister of Petroleum and Natural Gas, Hardeep Singh Puri, chaired a Ministerial Roundtable on Clean Cooking, where India’s success in providing universal access to clean cooking gas became a key focal point. The Minister emphasized that India’s model for clean cooking gas is not only a success story but also a replicable blueprint for the Global South, offering solutions to nations facing similar energy access challenges.

“India’s clean cooking gas revolution is a game-changer,” said Puri. He pointed out the key factors behind this success: targeted subsidies, strong political will, the digitization of distribution networks by Oil Marketing Companies (OMCs), and nationwide campaigns to shift cultural practices towards clean cooking.

The session brought together representatives from Brazil, Tanzania, Malawi, Sudan, Nepal, and key industry leaders, including the International Energy Agency (IEA), Total Energy, and Boston Consulting Group (BCG). These nations, all striving to enhance energy access for their populations, were eager to learn from India’s achievements.

Under India’s popular government scheme Pradhan Mantri Ujjwala Yojana (PMUY– Prime Minister’s Lightening Scheme), beneficiaries receive LPG access at a highly affordable cost of just 7 cents per day, while other consumers can access clean cooking fuel at 15 cents per day. “This affordability has been a game-changer in driving widespread adoption,” added Shri Puri, underlining the pivotal role of subsidies in overcoming financial barriers to clean cooking.

International representatives shared their nations’ efforts to transition to clean cooking solutions. Dkt. Doto Mashaka Biteko, Deputy Prime Minister and Minister of Energy of Tanzania, outlined the country’s strategy to transition 80% of households to clean cooking by 2030, relying on subsidies and a mix of energy sources, including LPG, natural gas, and biogas. Despite this ambition, he noted challenges such as financing constraints, infrastructure costs, and the need for regulatory reforms to encourage private-sector participation.

Similarly, Dr. Mohieldien Naiem Mohamed Saied, Minister of Energy and Oil, Sudan, emphasized the need for private-sector involvement to overcome gaps in LPG supply, particularly as Sudan still imports much of its energy. He stressed the importance of encouraging local cylinder production and ensuring cost-effective imports to drive broader adoption.

Mary Burce Warlick, Deputy Executive Director of the IEA, recognized India’s success as a model that offers valuable lessons for other nations grappling with issues of affordability, access, and infrastructure. She emphasized the role of concessional financing and public-private partnerships (PPP) in scaling up clean cooking access. Addressing cultural acceptance and regulatory adjustments, such as tax reductions, were also highlighted as critical factors for large-scale adoption.

Rahool Panandiker, Partner at Boston Consulting Group (BCG), further underscored the effectiveness of India’s clean cooking transformation. He attributed the success to the strong political commitment, effective subsidy targeting, and robust public awareness campaigns. Panandiker also credited India’s Oil Marketing Companies (OMCs) for enabling last-mile LPG delivery through digital platforms, making adoption seamless. He also stressed the importance of refining the cylinder refill model to ensure sustained usage while balancing affordability with economic sustainability.

In addition to LPG, the roundtable explored the potential of alternative clean cooking technologies. Puri addressed the potential of solar cookers in expanding clean cooking solutions across the Global South. He highlighted that IOCL’s advanced solar cookers, priced at approximately $500 per unit, could be a viable solution, though the price point remains a challenge for widespread adoption. “Leveraging carbon financing and collaborating with the private sector can drive costs down and make solar cooking a viable alternative for millions,” he stated.

This initiative aligns with India’s broader efforts to diversify clean cooking options beyond LPG, further reinforcing its commitment to reducing reliance on traditional biomass fuels and cutting carbon emissions. The government’s focus on solar cooking options aims to ensure a more sustainable future for energy access, particularly in remote and underserved areas.

“The Indian model, backed by smart subsidies and sustainable policies, provides a scalable solution for developing nations striving for clean cooking access,” Puri said. He also stressed that achieving universal clean cooking access is not merely an economic imperative but a moral one, given the severe health and environmental impacts of traditional biomass cooking.

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Green Energy

India Strengthens Clean Energy Initiatives at India Energy Week 2025

These clean energy projects are part of India’s broader strategy to diversify its energy sources and strengthen its energy security while promoting sustainability

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Image credit: PIB

At the India Energy Week 2025, India underscored its commitment to a sustainable and clean energy future through several strategic partnerships and agreements. Minister of Petroleum and Natural Gas, Hardeep Singh Puri, highlighted the importance of these initiatives in driving India’s transition to a greener energy landscape.

A key development in the clean energy sector was the partnership between India’s public sector firm BPCL and Eco Wave Power of Israel, which aims to establish India’s first wave energy pilot project in Mumbai. The project will utilize wave energy converter technology, marking a significant step in the country’s exploration of renewable energy sources.

In the biofuel sector, BPCL also signed an MoU with the National Sugar Institute, Kanpur, to scale up the production of sweet sorghum-based bioethanol. This collaboration will help build capacity for both farmers and industry partners, supporting India’s drive to increase the share of biofuels in its energy mix.

These clean energy projects are part of India’s broader strategy to diversify its energy sources and strengthen its energy security while promoting sustainability. Through these initiatives, India is reinforcing its position as a key player in the global clean energy transition.

Minister Puri emphasized that these agreements are a testament to India’s commitment to securing affordable, sustainable energy and fostering international collaborations in cutting-edge energy solutions. These partnerships will help achieve India’s energy transition goals, ensuring a resilient and sustainable energy future for the nation.

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Society

Sustainable Farming: The Microgreens Model from Kerala, South India

Microgreens can be harvested in 10 to 15 days from sowing, and they are not affected by external factors like rainfall, floods, or drought.

Lakshmi Narayanan

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Image by Oleksandr Pidvalnyi from Pixabay

In the verdant expanses of South Chittoor, a locality near Ernakulam city in Kerala, a coastal state in the southwestern part of India, lives Ajay Gopinath, a pioneer in the field of urban farming. In a region where traditional farming is deeply rooted but not always feasible, Ajay has embraced a more innovative approach, cultivating crops in a controlled indoor environment. His journey into microgreen farming is not just about a unique method of growing food, but a mission to bring sustainable, nutritious farming into urban spaces.

With a small, yet efficient setup of food-grade trays and advanced farming techniques, Ajay has created an urban farm within his own home. This modern method allows him to grow a variety of microgreens without the need for large tracts of land or the strenuous labour typically associated with farming. His work is a testament to how technology and tradition can combine, offering a glimpse into the future of agriculture in cities. Ajay showcases his micro-farming setup in a 600-square-foot space, where he grows a variety of crops using food-grade trays in a micro-farming system.

Ajay Gopinath. Image credit: By special arrangement

Microgreens and Their Benefits

Microgreens, such as sprouts and small plants grown from seeds, are harvested when they reach about two inches in height. This method of growing plants is known as “microgreen farming” and does not require extensive land or hard physical labour. “Microgreens can be harvested in 10 to 15 days from sowing, and they are not affected by external factors like rainfall, floods, or drought. Plants like sunflower, mustard, spinach, chickpea, and others can be grown in this way,” says Ajay Gopinath.

The key advantage of microgreens is their dense nutritional value. For instance, just 25 grams of microgreens can provide the same nutritional benefits as consuming a kilogram of cabbage or lentils. Microgreens are essentially at the next growth stage after sprouts, when they develop their first true leaves alongside the cotyledons.

Ajay Gopinath’s Urban Microgreen Farm

Ajay operates his indoor microgreen farm behind the Chittoor temple in Ernakulam, where he grows around 15 varieties of microgreens, including mustard, chia seeds, cabbage, and others. With daily harvests, his small farming space consistently yields reliable income. Through his venture Grow Greens, Ajay has proven that large-scale land is unnecessary for microgreen farming, making it possible to grow these nutritious plants in a small indoor space.

How to Farm Microgreens Indoors?

Microgreens are grown in trays arranged on racks, where each tray contains a different variety of plant. This indoor farm follows modern agricultural techniques using artificial lighting, fans, and purified water to create a controlled environment. In the initial stages, the seeds are placed in shallow trays with a layer of moist cloth. After two days, once the seeds begin to sprout, the trays are moved to the “grow room” that maintains the ideal temperature and humidity for plant growth. Within 7 to 10 days, the microgreens reach a height of 24 inches, and they are ready to be harvested.

Microgreens are grown in trays arranged on racks, where each tray contains a different variety of plant

Ajay emphasizes that proper microgreen farming should be scientifically conducted, and the use of materials like printed paper or plastic is not ideal for healthy production. He stresses the importance of using seeds that are free from pesticides and other chemicals, and the seeds must be non-GMO, produced under natural conditions. Seeds for this purpose are sourced from cities like Bangalore, Pune, and Hyderabad.

The Nutritional Benefits of Microgreens

Microgreens contain up to 40 times the nutrient density of mature plants. While many people are familiar with basic salad ingredients like onions, tomatoes, and cucumbers, microgreens offer a much more potent alternative. They are now favoured by health-conscious individuals, those on specialized diets, and patients undergoing treatment. Ajay’s microgreens are sold in star hotels and supermarkets in Ernakulam, and he offers sample packs for those new to this type of nutrition.

Market Demand and Expansion

While microgreens are priced at 1500-2000 INR per kilogram in the market, Ajay’s aim is to make them widely accessible. He believes that microgreen farming should expand to the grassroots level, making it available in local panchayats as a sustainable and nutritious food option. By making daily deliveries of freshly harvested microgreens, Ajay is building awareness about this high-tech farming method, showing that it requires minimal land and effort while offering a steady income.

Setting Up a Microgreen Farm

To begin, food-grade trays are used for farming. These trays are arranged on racks, with each tray dedicated to a specific plant. A controlled environment, complete with artificial light, fans, and purified water, ensures optimal conditions for growth. Special containers are used to prepare the seeds, and after the first two days, when they begin to sprout, they are moved to the grow room. By maintaining low humidity and a consistent temperature, the plants can grow and be harvested in just 7-10 days.

Ajay suggests that anyone, even those living in apartments with limited space, can grow microgreens at home. He recommends using local seeds, such as rice, millet, fenugreek, or mustard, and ensuring the growing space has good airflow and sunlight.

The EP View

Microgreen farming, as demonstrated by Ajay Gopinath and his Grow Greens venture, is a promising solution for urban farming. It proves that with minimal space and effort, anyone can grow highly nutritious crops indoors, offering both health benefits and a sustainable income source. Through his work, Ajay is helping to popularize microgreen farming, aiming to make it accessible to all.

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