
Leicester team aims to find ancient fresh water below seabed
'Groundbreaking research'
Speaking to BBC Radio Leicester, Dr Andrew McIntyre, from the school of geography, geology and the environment at the University of Leicester, believes freshwater will be found on the expedition."Usually any water below the surface would be sea water, but we now have evidence there is fresh water under the sea bed and we want to figure out how it got there," he said. "We have some ideas, we think it could be as old as 20,000-120,000-years-old, so it's really ancient water."Dr McIntyre said the expedition is part of the International Ocean Drilling Programme.This is an international marine research collaboration exploring Earth's history and dynamics using ocean research platforms to recover data recorded in seafloor sediments and rocks and to monitor subseafloor environments.As well as trying to prove fresh water is below the seabed, the team wants to investigate how ice ages may have changed certain seabeds over a time span of tens to hundreds of thousands of years.This is Dr McIntyre's third offshore expedition and he added: "This is ground-breaking research to identify some key questions, so I am very much looking forward to sailing on this one."
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Daily Mail
13 hours ago
- Daily Mail
You're washing your socks WRONG: Microbiologist reveals how to clean yours properly – and why you should always IRON them
With so many different chores to keep up with, it can be easy to forget about washing all your odd socks. But scientists say that falling behind on the laundry could lead to more than just smelly feet. Dr Primrose Freestone, a microbiologist from the University of Leicester, warns that your feet are a 'miniature rainforest of bacteria and fungi'. Thankfully, Dr Freestone has revealed the proper method for keeping your socks clean and fresh for as long as possible. Dr Freestone told the Daily Mail that you should use water which is 'at least 60°C (140°F) with an enzyme-based detergent'. Dr Freestone says: 'The enzymes detach the bacteria from the weave of the sock fibres, and the high temperature kills the bacteria and fungi which are adapted to living at human foot temperature. 'If your washing machine cannot manage a 60°C sock-microbe-killing temperature wash, then a hot iron will do the job – especially if the steam function is used. 'This helps the iron heat to penetrate deep into the sock, which will kill any bacteria, verruca virus or athlete's foot fungus.' Even though they stay safely inside our shoes for most of the day, our feet are among the dirtiest places on our bodies. Studies have shown that feet can have anywhere from 10 to 100 million microbial cells living on every square centimetre of skin. This is because our feet are warm, dark, and humid, a combination which helps bacteria thrive. Your feet, especially between the toes, are packed with sweat glands, which keep conditions ideal for microbial growth. To make matters worse, our socks pick up dirt and bacteria from everywhere we go. Socks act as 'microbial sponges' for bacteria, fungi, and fungal spores from soil, water, pet hair, and general dust. In one study, socks had the highest bacterial and fungal counts of any piece of clothing after being worn for just 12 hours. Those microbes collected by your socks then make their homes in the comfortable environment of your feet, where they rapidly multiply. How to wash your socks according to a microbiologist Turn your socks inside out before washing. Use an enzyme-based detergent to break down sweat and skin residue. Wash at least 60°C (140°F). Iron or steam after washing to kill any remaining microbes. 'Feet can be a host for up to 1,000 different bacterial and fungal species, some of which can eat the sweat your feet produce, and their malodorous waste metabolites are what cause smelly feet, socks and shoes,' says Dr Freestone. Those bacteria range from relatively harmless residents to potentially dangerous pathogens such as Aspergillus, Staphylococcus, Candida, Histoplasma and Cryptococcus. Staphylococcus bacteria are the cause of staph skin infections, which cause blisters and painful abscesses. In serious cases, staph infections can even lead to infections such as blood poisoning and toxic shock syndrome. Aspergillus, meanwhile, is a fungus which causes the respiratory condition Aspergillosis, leading to a wheezing cough that may bring up lumps of blood. Once bacteria are growing your socks, they are unlikely to stay put. Studies in hospitals have found that slipper socks worn by patients carried microbes from the floor into beds, including antibiotic-resistant pathogens. However, the biggest infection risk from your socks is from more common skin infections. Dr Freestone says: 'You can pass on infections from dirty socks, such as verrucas, which are caused by the human papillomavirus and are highly contagious, so not washing socks and then walking on floors could infect others with your virus. 'Athlete's foot fungus also lives in socks and can spread via unwashed socks.' In addition to changing your socks every day, Dr Freestone stresses that it is very important to wash socks properly to avoid being exposed to infections. The problem is that regular laundry temperatures between 30-40°C (86-104°F) are well within the limits that microbes on your feet have evolved to survive. 'Washing socks in detergent does help clean them, but I have done lab research which shows that some residual bacteria remain in socks if the wash is not a very hot one,' says Dr Freestone. Washing at higher temperatures or going over your socks with the iron will ensure that no unwanted pathogens survive the wash. Dr Freestone adds: 'My own socks got a hot wash with an antibacterial detergent and follow-on hot ironing, and so are sparkly clean- as are my feet!' Why do towels get so smelly so quickly? Towels are the perfect home for a swarming community of bacteria and fungi. They hold many of the key ingredients for hosting microbial life - water, warm temperatures, oxygen, a neutral pH, and even food in the dead skin people leave behind after a thorough dry. The human body also boasts these ideal living conditions, which is why our bodies are host to trillions of bacteria throughout our lives. As a towel is used to dry the body, microbes sitting on the surface of the skin are deposited onto its damp, warm surface. When we smell towels, we often perceive a musty or sour odour, which is from the waste products deposited by growing communities of mould and bacteria. Don't throw a wet towel into the laundry basket, as the damp and dirt will still be an ideal place for microbes to breed. By the time you get to doing your washing, the towel and the other laundry around it may have acquired a bad smell. And it can be difficult to get your towels smelling fresh again. Instead, put the damp towel straight into the washing machine, or, if it's a while before it's getting laundered, hang it to dry first.


Daily Mail
20-07-2025
- Daily Mail
You're washing your towels wrong! Microbiologist reveals how often you should really clean your bath towels - so, are you doing it enough?
With so many distractions around the home, forgetting to clean your towels is an easy thing to do. So it's little surprise that some Brits go a whole year before finally bunging them in the washing machine. But according to a scientist, you may want to start doing it every day if you don't want to jeopardize your personal hygiene. Dr Primrose Freestone, professor of clinical microbiology at the University of Leicester, says you should be laundering towels after two uses at the very most. That's once every two days for people who shower or bathe once a day. However, for those with infections or a weakened immune system, towels should be washed after every single use, the expert claims. 'Clean towels are no longer clean after drying skin,' Professor Freestone told MailOnline. 'Dirty towels will make freshly washed skin dirty again, negating the point of washing.' When we dry ourselves with a towel, we deposit thousands of skin cells and millions of microbes like bacteria and fungi onto it. And then when we reuse the towel, we shed yet another layer of these invisible cells and organisms, eventually creating a thriving community. One study analysing repeated use of bath towels by a single user in a hostel revealed high levels of several bacteria species that can cause dangerous infections in humans, including E. coli, Staphylococcus aureus and Klebsiella. Exposure to these microbes in your towels can cause fever, asthma, allergic skin irritations, other skin infections and many more symptoms. A towel is also regularly damp, not only because we use them every day after we bathe and shower, but because towel fabric is much thicker than something like bed linen. Unfortunately, bacteria and fungi thrive in damp environments, which in turn make it harder for towels to dry – further encouraging their growth. 'Bath towels are particularly good at accumulating microorganisms as they contact all areas of a body,' said Professor Freestone. 'If the towels are repeatedly used without laundering, sweat, skin cells and bodily fluids will build up and provide a nutritious, moist and warm environment for bacteria and fungi to grow.' Towels quickly pick up an unpleasant musty or sour smell, similar to wet dog fur, and the reason for this is rather hard to stomach. 'The musty smell from overused under-washed towels is thought to be due to residual detergent or clothes conditioner which trap body sweat or fluids which is then fed upon by bacteria and fungi which are making volatile organic compounds,' Professor Freestone said. 'In other words it is bacteria and fungal waste products making the smell.' According to Professor Freestone, we should 'never ever' share a bath towel to minimize the risk of spreading infections. Viral infections such as monkey pox – which causes fever, headache and blisters – can be spread by doing so. And not just bath towels we should be laundering regularly; hand towels may not be used all over the body like bath towels, but the contact with the skin still transfers microbes and skin cells from the hands. 'Bath towels need more frequent laundering than hand towels due them having a higher microbial content,' said the expert. 'But hand towels will still from repeat use accumulate bacteria and fungi – so do a hot detergent wash every three to five days.' Hand and bath towels should be washed with laundry detergent at 140°F (60°C) and be left to dry completely before they are used. 'This hot wash kills most bacteria and fungi, inactivates viruses and stops towels smelling unpleasant; it also ensures towels do not pose an infections risk,' she said. 'For storing the towels make sure they are thoroughly dried before stacking in a cool, dry environment.' According to Rietie Venter, associate professor of clinical health at the University of South Australia, towels need to be washed even more often than bed linen. Towels are best washed every few days, she said in a piece for The Conversation last year, while facecloths should be cleaned after every use. If towels still smell after being laundered, they may have been left in the washing machine for too long once the cycle had finished. 'If possible, hang your towels and bedding out in the sun,' Professor Venter said. 'That will dry them quickly and thoroughly and will foster that lovely fresh, clean cotton smell. 'Using a dryer is a good alternative if the weather is bad, but outdoors in the sun is always better if possible.' Why do towels get so smelly so quickly? Towels are the perfect home for a swarming community of bacteria and fungi. They hold many of the key ingredients for hosting microbial life - water, warm temperatures, oxygen, a neutral pH, and even food in the dead skin people leave behind after a thorough dry. The human body also boasts these ideal living conditions, which is why our bodies are host to trillions of bacteria throughout our lives. As a towel is used to dry the body, microbes sitting on the surface of the skin are deposited onto its damp, warm surface. When we smell towels, we often perceive a musty or sour odour, which is from the waste products deposited by growing communities of mould and bacteria. Don't throw a wet towel into the laundry basket, as the damp and dirt will still be an ideal place for microbes to breed. By the time you get to doing your washing, the towel and the other laundry around it may have acquired a bad smell. And it can be difficult to get your towels smelling fresh again. Instead, put the damp towel straight into the washing machine, or, if it's a while before it's getting laundered, hang it to dry first.


Medical News Today
01-07-2025
- Medical News Today
A fasting-mimicking diet may improve blood sugar control in type 2 diabetes
Dietary changes are a crucial component of managing type 2 diabetes and can even help achieve remission of the diets, which involve calorie restriction during specific hours or days, have been shown to be effective in alleviating symptoms of type 2 diabetes.A previous randomized controlled trial demonstrated that a monthly cycle of a fasting-mimicking diet that limits calorie intake during five consecutive days can lower blood sugar levels and reduce reliance on from a recent study provides real-world evidence to support the effectiveness of a 5-day fasting-mimicking diet, beyond the controlled conditions of a clinical trial. About 11% of the American population had diabetes in 2021, with type 2 diabetes accounting for 90% to 95% of these diets, which involve alternating periods of fasting and eating, are effective in alleviating the symptoms of type 2 diabetes and can be easier to follow than reducing daily calorie intake over a long time.A new study, conducted using real-world evidence, shows that individuals with type 2 diabetes who follow a fasting diet involving restricted energy intake for 5 consecutive days per month exhibit improvements in blood glucose (sugar) levels, weight loss, and a reduced reliance on diabetes fasting program has been patented by L-Nutra, a nutrient technology company. One of the study authors, William Hsu, MD, an endocrinologist and Chief Medical Officer at L-Nutra, told Medical News Today that:'This study demonstrates how the fasting-mimicking diet (FMD), when combined with physician oversight and registered dietitian (RD) coaching, can be safely and effectively implemented in real-world clinical settings to manage type 2 diabetes.'The researchers presented these results at the American Diabetes Association's 85th Scientific Sessions on June 20, 2025. The findings are yet to appear in a peer-reviewed do fasting diets work?The treatment for type 2 diabetes typically involves a combination of lifestyle modifications and medications. Lifestyle modifications, including dietary changes and increased physical activity, help lower blood glucose levels and facilitate weight medications such as metformin and GLP-1 agonists facilitate the management of diabetes symptoms, only lifestyle changes, such as dietary modifications, can lead to disease have shown that restricting daily calorie intake is effective in managing blood sugar levels and reducing weight in individuals with type 2 diabetes. However, adhering to such a diet over the long term is the body adapts to long-term calorie restriction, resulting in a slower metabolism, which makes sustained weight loss more various forms of fasting diets, involving alternating periods of fasting and unrestricted food intake, have been suggested to be easier to adhere to while alleviating diabetes triggers a stress response in cells and the body, promoting healthy aging by reducing inflammation and oxidative damage, while enhancing diets may involve either restricting calorie intake during certain hours of the day, known as intermittent fasting, or during specific days of the week or month, referred to as periodic fasting-mimicking diet is a form of periodic fasting that involves restricted calorie intake for 4 to 7 consecutive days per have developed the fasting mimicking diet to simulate the beneficial health effects of water-only fasting, which involves only water intake during a 24 to 72-hour period. In contrast to water-only fasting, a fasting-mimicking diet allows for limited calorie intake during the fasting period, making adherence less challenging. Blood sugar control: How is a 5-day fasting approach better?The authors of the current study have developed a patented low-calorie, plant-based diet that is low in sugar and protein, but rich in healthy unsaturated fats and fiber.A previous study demonstrated that a 5-day fasting-mimicking diet also leads to a decrease in blood sugar and insulin levels, while increasing the levels of ketone bodies. Moreover, a recent randomized controlled trial demonstrated that a 5-day fasting mimicking diet combined with medications was more effective than medications alone in improving blood glucose control and reducing medication reliance. These results were observed under highly controlled conditions in a clinical trial, including strict criteria for patient inclusion and exclusion. This makes it essential to evaluate the real-world efficacy of this impact of a fasting-mimicking dietIn the present study, researchers evaluated the real-world benefits of integrating a fasting-mimicking diet into routine care for individuals with type 2 present study included data from patients enrolled in a diabetes management program that involved following a monthly 5-day fasting-mimicking diet under the supervision of physicians and registered were enrolled in the study on a rolling basis, and data were collected from those who had completed at least 3 or 6 months of the the end of 3 and 6 months, the fasting-mimicking diet was effective in facilitating weight loss and reducing glycated hemoglobin levels, a marker of blood glucose levels. The fasting-mimicking diet also helped a greater percentage of participants achieve blood glucose control at these time points than at the time of fasting-mimicking diet also reduced reliance on medications for blood glucose control, while still resulting in high levels of engagement in the addition, Hsu noted: 'Most participants are able to integrate the fasting-mimicking diet into their daily lives without significant disruption. Because it's a 5-day monthly intervention rather than a daily regimen, many find it feasible to complete even with work and family obligations, especially with RD support to tailor practical strategies for adherence and personalization.'While the fasting-mimicking diet can be safely undertaken by most individuals with type 2 diabetes, patients should consult a physician before starting such a Routhenstein, MS, RD, CDCES, CDN, a preventive cardiology dietitian and heart health expert at Entirely Nourished, not involved in this study, expressed some caution about the findings.'While the positive effects of the FMD program on weight and HbA1c [a marker of blood sugar] are promising, it is important to note that the intervention was associated with common signs of energy deficit — including fatigue, headache, dizziness, and nausea — in a substantial number of participants during the 5-day fasting period,' Routhenstein told MNT.'Although these symptoms resolved between cycles, they may pose risks for certain individuals, especially those with coexisting health conditions or frailty,' she pointed also cautioned that: 'While the program accommodates most individuals with type 2 diabetes or metabolic syndrome, certain conditions are exclusionary, such as recent cardiovascular events, end-stage diabetes complications, frailty, a BMI under 18, or allergies to FMD ingredients. The program is designed to prioritize safety while expanding access to innovative nutrition-based care for metabolic health.'Finally, Routhenstein advised that 'the inclusion of lifestyle advice with the option to consult a dietitian may have influenced some of the study findings.'