Are weight loss drugs safe?

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Updated Dec 19, 2024 | 09:03 AM IST

UK Woman's Death After Using Weight Loss Drugs Raises Questions On Its Safety

SummaryAre approved weight loss drugs unsafe? A UK woman and a Scottish nurse's death linked with popular weight loss drugs, raises questions on its safety? FDA has also issued warning.

A 34-year-old British mom of two and a 58-year old nurse from Scotland, both died after consuming weight loss drugs.

Sarah Thompson, 34, mom of two was a cancer survivor who had battled obesity since her treatment. This involved removal of her voice box, which made it further difficult for her to exercise. She then went on to consume weight loss drugs, called the "skinny drugs". As a result, she fell violently ill. Earlier, from the same drug, she had dropped her weight from 98kg to 69kg. As per the reports, these drops contained Clenbuterol, a Class C controlled drug in UK, which means it is illegal to posses without a prescription and illegal to sell or supply without prescription.

Despite the side effects like vomiting, nausea, listlessness, racing heart, she was happy with the results and how quickly it helped her lose weight. She also recommended the drops to her 26-year-old sister, who suffering an uncontrolled racing heart and body shakes and quit the drugs.

For the 58-year-old nurse Susan McGowan, she died of a multiple organ failure, septic shock and pancreatitis. However, her death certificate also lists the Eli Lilly drug as a contributing factor. Her death was the first in UK, which officially links the drug, known as Mounjaro or Zepbound.

McGowen consumed the drug for two weeks. BBC reports that she bought her prescription for the drug online. A few days after her second dose, she experienced sickness and severe stomach pain. However, she was treated at the University Hospital Monklands in Airdrie, Lanarkshire, where she had worked. Despite the treatment, within a few days, she developed serious kidney issues, went into a coma. Later, her other organs failed, leading to her death.

What does it mean? Are approved weight loss drugs not safe?

The US Food and Drug Administration (FDA) has sent warning letters to four companies for selling unapproved versions of GLP-1 drugs, including semaglutide and tirzepatide, both active ingredients in popular diabetes and weight-loss drugs.

The letters were issued to Xcel Peptides, Swisschems, Summit Research, and Prime Peptides. These websites are used by many to order drugs, though it does mentions that these products must be used only for research and "not for human consumption or clinical use".

What are Semaglutide and Tirzepetide?

Semaglutide is an active ingredient in Novo Nordisk's Wegovy and Ozempic, the popular weightloss drugs. Whereas Tirzepetide is one of the several new "blockbluster" weight loss drugs that lower your appetite by making people feel full.

As per the reports, researchers from the Rhode Island found in their study which was funded by the US National Institutes of Health (NIH) that these active ingredients could lead to risks of kidney, liver and other organ damage. The NIH has also sent out warning too. The researchers said it can cause "severe toxicity" to major internal organs.

Researchers have also warned people to not self-prescribe or fall for the "herbal" or "no-side-effects" promises made by sellers who are not qualified medical practitioners.

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Florida bans fluoride from public water systems

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Updated Apr 30, 2025 | 07:00 AM IST

Florida Also Lines Up To Ban Fluoride From Public Water Systems

SummaryAs the debate over fluoride in drinking water continues to unfold in Florida and other states, it is clear that the decision to fluoridate public water supplies is far from straightforward. As more states consider similar legislation, the need for careful examination of the scientific evidence surrounding fluoride’s benefits and risks will only grow.

Florida is on the brink of becoming the second taste to ban fluoride in public drinking water. It will join Utah, which had become the first state to enact the ban just last month. While this was opposed by dentists and national health organizations, who had also warned against this move to lead to more medical problems, dental problems and also affecting low-income communities disproportionately, Spencer Cox, Republican Gov. Signed the legislation regardless.

The Controversial Bill

The bill has received final approval from Florida lawmakers on Tuesday and is now being headed to Republican Governor Ron DeSantis' desk for approval. DeSantis' administration has been an outspoken critic of adding fluoride to community water systems. They have argued that high fluoride levels could potentially affect children's intellectual development. The same concern was quoted by Cox to ban fluoridated water. This is based on the paper published in the medical journal JAMA Pediatrics that concluded that there may be a link between high levels of fluoride and lower Intelligence Quotient (IQ). Their research indicated a possible neurodevelopmental harm to pregnant people or young children if they are exposed to drinking water containing at least 1.5 milligrams of fluoride per litre- a level more than twice what's recommended (0.7 mg/L) for the US water supply. It is important to note that in many American states and Western countries, pregnant women and children receive fluoride from many sources, making their exposure to this mineral way too high from the recommended levels.

However, the study does not the safe levels of fluoridated water which is safe for use. In fact, these levels are also regulated by the US Food and Drug Administration (FDA).

What Do The Republicans Want?

The bill, sponsored by Republican state Representative Kaylee Tuck, does not explicitly mention fluoride but mandates the removal of fluoride and other additives from the state's water systems.

According to Tuck, the legislation focuses on removing additives related to health, rather than water quality itself. "Anything that relates to water quality, removing contaminants, things like that, we're not touching that," she stated. "It's anything that has to do with health, so fluoride, vitamins, whatever else it is."

The Resistance

There has been local resistance to from the local authorities in Florida. The Miami-Date County Mayor Daniella Levine Cava expressed her dismay with this move and stated that this will undermine the overwhelming support of medical professionals for the practice of fluoridating water. She said that ending fluoridation could lead to harmful consequences, especially for the vulnerable families, who would lost access to a cost-effective method of preventing tooth decay.

Fluoridation has been a standard practice in many parts of the U.S. for decades, and it has been credited with significantly reducing the incidence of cavities. According to the Centers for Disease Control and Prevention (CDC), fluoride helps to strengthen tooth enamel and make it more resistant to cavities.

Health Benefits Of Flouride

Fluoride is a naturally occurring mineral that plays an essential role in maintaining strong, healthy teeth. It helps replace minerals lost from tooth enamel due to normal wear and tear. Additionally, fluoride can help reverse early signs of tooth decay by remineralizing the enamel. It also reduces the production of acids by bacteria in the mouth, which further helps prevent plaque buildup.

Beyond dental health, fluoride is also beneficial for bones. It stimulates new bone formation and has been shown to protect against conditions like osteoporosis. As such, fluoride is not only important for dental care but also for overall skeletal health.

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Updated Apr 29, 2025 | 02:00 PM IST

Leukemia Can Now Be Treated By New Immune Cell Treatment

SummaryUnlike other cancers that have a mass or tumor doctors can remove for treatment, Leukemia, that affect a person's blood, cannot be treated the same way. However, a study shows promising results for its treatment from a pre-existing procedure.

Cancer is an umbrella term for abnormal excess growth that can occur in any part of the body. Leukemia is the cancer of blood, which means there is rapid growth of abnormal blood cells. This growth starts in the bone marrow, which is where your body makes blood. The Cleveland Clinic explains that unlike other cancers, leukemia does not form a mass or tumor that can be detected in a CT scan.

The usual treatment of Leukemia involves Chemotherapy, whether by pill, injection into your vein or a shot under your skin. Another treatment for it is immunotherapy which uses a drug to boost your body’ defense system so that it can fight the cancer itself. Now, a research by American Association for Cancer Research April 2025, has revealed that a pre-made version of immunotherapy can effectively fight blood cancers. This "off-the-shelf" approach offers a potentially faster and easier way to deliver this powerful therapy to patients in need.

Promising Treatment Against Blood Cancer

This new way to treat blood cancer uses special immune cells called natural killer cells, or NK cells. These NK cells have been changed in a lab to have special tools, called CARs, that help them find and kill cancer cells. What's really helpful is that these CAR NK cells can be made ahead of time from healthy people and stored. This means doctors can just take them off the shelf and give them to patients who need them quickly, without having to wait for a treatment to be made just for them, making the whole process much simpler and faster.

The results from using this ready-made CAR NK cell treatment yielded promising results, especially for people with a type of blood cancer called acute myeloid leukemia, or AML. The scientists found that after getting this treatment, some of the patients with AML had their cancer completely disappear. This is called complete remission, and it means there were no signs of cancer left in their blood. These early successes give a lot of hope for a new and better way to treat this difficult disease.

Notably, AML is a very fast-growing and serious cancer. According to American Cancer Society this cancer develops in the myeloid cell, the cells that would normally become white blood cells. This type of cancer develops quickly, hence needs to be treated with the same urgency.

Who Does This Treatment Help?

The first group of patients who received this ready-made CAR NK cell treatment were people whose leukemia had either stopped responding to other treatments or had come back after treatment. These are often the most difficult cases to treat. The fact that some of these patients had such a good response to the SENTI-202 treatment, which is a safety feature to the SENTI-202 cells. It's like a special switch that stops the NK cells from attacking healthy cells in the body. With their cancer completely disappearing, is a very encouraging sign that this new approach could offer hope to patients who have run out of other options.

More Research Needed To Confirm Safety and Effective

The researchers are hopeful about the new treatment and early success for the treatment. They believe that this ready-made approach could lead to new types of immune therapies that are much easier to produce and give to patients. Researchers emphasized that there's a big need for better treatments for AML, and he hopes this new method can become an important option for these patients who often have very limited choices.

It's important to remember that these are just the first results from an ongoing study. The scientists are still enrolling more patients to learn even more about how safe and how well SENTI-202 works. They need to keep studying it to make sure it's a reliable and effective treatment for more people with blood cancers. Before this treatment can be used widely, the findings need to be carefully reviewed and published in a scientific journal.

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Right Before Approval,  FDA Again Scrutinizes Novavax Covid-19 Vaccine

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Updated Apr 29, 2025 | 07:00 AM IST

Right Before Approval, FDA Again Scrutinizes Novavax Covid-19 Vaccine

SummaryNovavax is working with the FDA to meet additional requirements and hopes to secure full approval as soon as possible. However, the uncertainty surrounding the approval process highlights the ongoing challenges in navigating the pandemic and the vaccines that are crucial to ending it.

The uncertainty around the Novavax's COVID-19 vaccine has been exacerbated by the Trump administration. The new government has imposed new requirements on the nation's only traditional protein-based vaccine. These new requirements have led to many confusions about vaccine updates, including other vaccines too, which await approval.

The Wait For Full Approval Is Too Long

Novavax is the maker of the protein-based COVID-19 vaccine, which was on track to receive full approval from the US Food and Drug Administration (FDA) by April 1. However, the approval process was paused because of Dr Sara Brenner, the FDA's acting commissioner. The reason for delay has raised many questions about the interference, including political, especially after Dr Peter Marks, FDA's longtime vaccine chief had left following disagreements with Health Secretary Robert F Kennedy Jr. These events have further led to the apprehensions of uncertainty regarding the vaccine's future.

As of now, Novavax's vaccine is only authorized for emergency use. Unlike mRNA vaccines form Pfizer and Moderna, which have full approval, the Novavax vaccine holds the EUA or the Emergency Use Authorization, which allows it to be distributed during public health emergencies. However, once the emergency ends, the FDA can remove these vaccines from market unless full approval is granted.

What Caused The Delay?

The FDA had initially planned to approve Novavax's vaccine by its April 1 target date. However, sources familiar with the situation revealed that Trump appointees influenced the delay. Since then, Novavax has been in discussions with the FDA to determine additional requirements for approval. In the meantime, the FDA's recent comments have fueled concerns that Novavax’s vaccine may be treated as a “new product” due to its updates to match last year’s coronavirus strain. This would require new clinical trials, a process unlikely to be completed before the fall.

ALSO READ: Novavax Says FDA Approval Back on Track for Its COVID Vaccine

This approach to Novavax’s vaccine approval stands in stark contrast to the FDA’s treatment of the mRNA vaccines, where annual strain updates have been handled in a way similar to flu vaccines, requiring only small-scale tests to demonstrate the vaccine’s continued effectiveness against new strains. Dr. Paul Offit, a vaccine expert, argued that it would be unnecessary to treat these annual updates as “new products” requiring full trials, as long as the updated vaccines show that they produce protective antibody levels.

Role Of HHS Secretary

Of course Robert F Kennedy Jr will have a role to play, being the Health Secretary, and a known vaccine skeptic. Despite claiming in recent speeches that he is not anti-vaccine, Kennedy’s past associations with anti-vaccine groups have raised alarms. His nonprofit, Children’s Health Defense, has been involved in campaigns questioning vaccine safety, and Kennedy himself has made public statements suggesting that vaccines can cause autism—a long-debunked claim.

His actions have also contributed to the uncertainty that surrounds the Novavax's approval today and the overall direction of US vaccine policies.

Is Novavax Different From Other Vaccines?

What sets Novavax apart from other COVID-19 vaccines is its traditional approach. While Pfizer and Moderna’s mRNA vaccines use genetic instructions to create a temporary version of the virus’ spike protein, Novavax’s vaccine contains lab-grown copies of the spike protein itself. This approach has been used for decades in vaccines for diseases like hepatitis B and shingles, making it a more familiar method for people who may be hesitant about mRNA vaccines.

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