Having sweet tooth linked to increased risk of depression, diabetes, and stroke, study finds

People with a preference for sweets are at a higher risk of developing depression, diabetes, and suffering a stroke, according to new research from the University of Surrey.

The study, published in the Journal of Translational Medicine, took anonymised information on the food preferences of 180,000 volunteers within the UK Biobank and used artificial intelligence to group them into three general profiles:

• Health-conscious: prefer fruits and vegetables over animal-based and sweet foods.

• Omnivore: Likes most foods, including meats, fish, and some vegetables, as well as sweets and desserts.

• Sweet tooth: Prefer sweet foods and sugary drinks and is less interested in healthier options like fruit and vegetables.

The Surrey team looked at UK Biobank data on blood samples where 2,923 proteins and 168 metabolites had been measured to see how these levels changed in each group.

Proteins are the workhorses of the body and do everything from fighting infections to muscle contractions and thinking. Metabolites are small molecules produced during digestion and other chemical processes in the body, and they can tell us a lot about how well our body is functioning. By comparing these blood-based proteins and metabolites, the researchers could get a clearer picture of the biological differences between the groups.

Professor Nophar Geifman, senior author of the study and Professor of Health and Biomedical Informatics at the University of Surrey, said:

“The foods that you like or dislike seem to directly link to your health. If your favourite foods are cakes, sweets, and sugary drinks, then our study’s results suggest that this may have negative effects on your health. We found that the sweet tooth group are 31% more likely to have depression. We also found that the sweet tooth group had higher rates of diabetes, as well as vascular heart conditions, compared to the other two groups.

“Importantly, by using data-driven Artificial Intelligence methods, we were able to identify groups of people defined by their food preferences, and these groups are meaningful in that they are linked to health outcomes as well as biological markers.

“Processed sugar is a key factor in the diet of many, and these results are yet more evidence that, as a society, we should do all that we can to think before we eat, stressing that no one wants to tell people what to do, our job is just informing people.”

The researchers also looked at differences between the three groups in standard blood biochemistry tests.

Professor Geifman continues:

“In the sweet tooth group, they had higher levels of C reactive protein, which is a marker for inflammation. Their blood results also show higher levels of glucose and poor lipid profiles, which is a strong warning sign for diabetes and heart disease.”

Conversely, the health-conscious group, which also had higher dietary fibre intake, had lower risks for heart failure, chronic kidney diseases and stroke, while the omnivore group had moderate health risks.

According to the British Nutrition Foundation, on average, in the UK, between 9% to 12.5% of an individual’s calories come from free sugar – this is defined as sugar that is added to food or drink. Biscuits, buns, cakes, pastries and fruit pies are the biggest single contributors for adults, but together, sugary soft drinks and alcoholic drinks contribute the most to free sugar intake.

Reference:

Navratilova, H.F., Whetton, A.D. & Geifman, N. Artificial intelligence driven definition of food preference endotypes in UK Biobank volunteers is associated with distinctive health outcomes and blood based metabolomic and proteomic profiles. J Transl Med 22, 881 (2024). https://doi.org/10.1186/s12967-024-05663-0.

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Nonselective Extracorporeal Blood Purification Reduces AKI in High-Risk Cardiac Surgery Patients: SIRAKI02 trial

Spain: Researchers have found in a new study that nonselective extracorporeal blood purification (EBP) device connected to the cardiopulmonary bypass circuit during surgery reduced the risk of cardiac surgery-associated acute kidney injury (CSA-AKI).

In high-risk patients undergoing cardiac surgery, employing a nonselective extracorporeal blood purification (EBP) device significantly decreased acute kidney injury (AKI) incidence within the first seven days post-surgery. This is the SIRAKI02 Randomized Clinical Trial finding published online in JAMA.

Cardiac surgery-associated acute kidney injury (CSA-AKI) continues to be a major concern after cardiopulmonary bypass (CPB). While several strategies have been suggested to mitigate CSA-AKI, such as extracorporeal blood purification, there is limited understanding of the impact of EBP using an acrylonitrile-sodium methallylsulfonate/polyethyleneimine membrane during CPB. To fill this knowledge gap, Xosé Pérez-Fernández, Institut de Investigació Biomédica de Bellvitge L’Hospitalet de Llobregat, Barcelona, Spain, and colleagues aimed to assess whether the application of an EBP device in a non-emergency cardiac surgery population leads to a reduction in CSA-AKI following cardiopulmonary bypass (CPB).

For this purpose, the researchers conducted a double-blind, randomized clinical trial in two tertiary hospitals in Spain. They enrolled patients aged 18 and older, at high risk for CSA-AKI, undergoing non-emergent cardiac surgery from June 15, 2016, to November 5, 2021, with follow-up until February 5, 2022. Of the 1,156 patients assessed, 343 were randomized (1:1) to receive either the nonselective EBP device connected to the CPB circuit or standard care. The primary outcome measured was the rate of CSA-AKI within seven days post-randomization.

The study led to the following findings:

  • Among the 343 randomized patients (169 receiving EBP and 174 receiving standard care), the average age was 69, with 119 females.
  • The rate of CSA-AKI was 28.4% in the EBP group compared to 39.7% in the standard care group, showing an adjusted difference of 10.4%.
  • Most predefined clinical secondary and post hoc exploratory endpoints showed no significant differences.
  • A sensitivity analysis indicated that EBP was particularly effective in reducing CSA-AKI among patients with chronic kidney disease, diabetes, hypertension, low left ventricular ejection fraction (<40%), and lower body mass index (<30).
  • There were no differences in adverse events between the groups.

“The findings indicated that employing a nonselective EBP device connected to the CPB circuit in a non-emergency cardiac surgery population significantly reduced CSA-AKI incidence within the first seven days post-surgery,” the researchers concluded.

However, the researchers noted several limitations: inaccurate urine output collection may obscure true CSA-AKI rates post-ICU, serum creatinine changes could be affected by volume status, and findings may not apply to patients with late AKI. Additionally, blinding wasn’t possible, some data were missing, and results may not generalize beyond two centers.

Reference:

Pérez-Fernández X, Ulsamer A, Cámara-Rosell M, et al. Extracorporeal Blood Purification and Acute Kidney Injury in Cardiac Surgery: The SIRAKI02 Randomized Clinical Trial. JAMA. Published online October 09, 2024. doi:10.1001/jama.2024.20630

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New Research Highlights Fenugreek’s Role in Blood Sugar Control and Wheat Starch Modification

India: Fenugreek may help regulate blood sugar levels by slowing down wheat starch hydrolysis, making it a potentially effective tool for diabetes management, a recent study published in the Journal of Food Science has revealed.

Recent studies have revealed promising results regarding the use of fenugreek (Trigonella foenum-graecum L.) seed extract in modifying the properties of wheat (Triticum aestivum L.) starch. The research by Vivek Chandra Verma, Department of Biochemistry, Panjab University, Chandigarh, India, and colleagues highlights the extract’s potential to lower the glycemic index (GI) and improve in vitro digestibility, making it a valuable addition to functional food formulations.

Diabetes is a significant global health challenge, nearing epidemic levels. In 2021, diabetes mellitus accounted for 6.7 million deaths worldwide, with projections suggesting a nearly tenfold increase in mortality by 2030, potentially reaching 783 million by 2045. Wheat starch, which makes up about 70% of the wheat grain’s endosperm, is crucial in this issue. The rapid hydrolysis of wheat starch can lead to spikes in postprandial glucose levels, contributing to diabetes. The action of enzymes like α-amylase and α-glucosidase on carbohydrates primarily drives this rise in blood glucose. While various medications exist for diabetes management, they often come with high costs and potential side effects. In contrast, natural remedies such as fenugreek have been used in traditional medicine for their ability to help regulate blood glucose levels.

The glycemic index is a critical measure of how quickly carbohydrate-containing foods raise blood glucose levels. Foods with a high GI can lead to spikes in blood sugar, which is particularly concerning for individuals with diabetes or insulin sensitivity. Considering this, Dr. Chandra Verma and colleagues aimed to study the impact of fenugreek seed extract (FSE) on in vitro starch hydrolysis by pancreatic α-amylase and the ultrastructural characteristics of starch.

For this purpose, the researchers evaluated wheat cultivars for total starch, amylose content, and resistant starch levels while also being screened for their predicted glycemic index. Microscopic analysis was performed to assess the size and shape of starch granules, comparing native starch with that treated with FSE. They found that FSE significantly inhibited enzymatic starch hydrolysis, with the strongest inhibitory effect observed at a concentration of 0.2% FSE.

“These findings indicate that fenugreek may help regulate blood glucose levels by diminishing the hydrolysis of wheat starch, making it a promising option for diabetes management,” the researchers wrote.

Incorporating fenugreek seed extract into wheat starch presents an innovative approach to reducing glycemic responses and enhancing digestibility, as highlighted by the study authors. As researchers continue to explore its potential, this natural ingredient could pave the way for healthier dietary options that align with the growing focus on preventive health and nutrition.

Reference:

Mate, P. S., Verma, V. C., Agrawal, S., Jaiswal, J. P., Kumari, V. V., Kumar, R., Kumari, M., Gaber, A., & Hossain, A. Effect of fenugreek (Trigonella foenum-graecum L.) seed extract on glycemic index, in vitro digestibility, and physical characterization of wheat (Triticum aestivum L.) starch. Journal of Food Science. https://doi.org/10.1111/1750-3841.17411

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Heat stress may still affect babies once born, first evidence suggests

Exposure to high levels of heat may both impact the growth of foetuses during pregnancy and infants up to the age of two, a new analysis suggests.

The study is the first of its kind to show that heat stress may impact the development of babies after they’re born and adds to previous research by the team showing the impact of heat stress on foetal development.

The research, which examined data from infants and their mothers collected during a clinical trial in The Gambia, found a small decrease in birth weight for gestational age for every 1°C increase in average daily heat stress during the first trimester.

No effect on growth was observed for heat stress experienced during the second trimester. The research suggested there could be an increase in head circumference compared to the body for gestational age in foetuses exposed to heat stress during the third trimester, but this was less confident.

The findings also show that infants up to the age of two exposed to high heat in their environment may have lower weights and heights for their age. The largest decreases were seen in infants aged between 6-18 months who had experienced higher average daily levels of heat stress in the previous three-month period.

At 12 months old, infants exposed to an average heat stress value equivalent to 30°C were more likely to have a reduced weight for their height and age, compared to those who experienced heat stress equivalent to 25°C.

The results were found in both male and female infants.

The team, led by researchers at the Medical Research Council Unit The Gambia (MRCG) at the London School of Hygiene & Tropical Medicine (LSHTM), say that the impacts of heat exposure must urgently be considered in public health interventions to reduce the impact of climate change to pregnant women and their children.

The findings are published in The Lancet Planetary Health.

The data was originally collected through the Early Nutrition and Immunity Development (ENID) randomised controlled trial conducted in West Kiang, the Gambia, between January 2010 and February 2015. A total of 668 infants were followed across their first 1000 days of life, made up of 329 (49%) female and 339 (51%) male infants.

The trial analysed the relationship between heat stress and foetal growth based on clinically-recognised scores for weight, length and head circumference for gestational age. It also evaluated the effect of heat stress on infant growth based on weight and height scores from 0-2 years of age.

At birth, 66 (10%) infants weighed less than 2.5 kg, described as a low birthweight, 218 (33%) were small for gestational age and nine (1%) were born prematurely.

Heat strain occurs when our body’s way of controlling its internal temperature is compromised by external factors such as weather or physical activity. In the study, heat stress was defined using the Universal Thermal Climate Index, which considers factors including heat, humidity, wind speed, and solar radiation, and assigns an equivalent temperature (°C) with an associated risk of developing heat strain.

Over the course of the study, the average heat stress exposure level was 29.6°C. The highest daily maximum was 45.7°C and highest daily minimum was 28.9°C.

Dr Ana Bonell, Assistant Professor based at MRCG and lead author of the study, said:

“Our study demonstrates that the intersecting crises of climate change, food insecurity, and undernutrition are disproportionately affecting the most vulnerable, including young children.

“These findings build on previous evidence showing that the first trimester is a vulnerable time to heat exposure and it’s important that we now consider which factors may be contributing to the relationship.

“It’s likely that heat stress may impact appetite, food intake and availability, and we’re also already looking into whether there may be direct effects on cellular and inflammatory pathways, adding to the already reduced capacity of pregnant mothers and infants to regulate their own body temperature.

“We need to explore which populations are projected to experience heat stress the most and where growth faltering may be being recorded, to enable us to develop effective public health measures.

“With global rates of child wasting remaining unacceptably high and ongoing planetary warming, these findings must spur action on improving child health.”

The researchers say that further research is needed to assess the relationship between heat stress and health impacts in regions beyond The Gambia. The available data did not contain information on dietary practices, maternal infections, or socioeconomic status, which may also impact foetal and infant growth.  

Reference:

Bonell, Ana et al., Effect of heat stress in the first 1000 days of life on fetal and infant growth: a secondary analysis of the ENID randomised controlled trial, The Lancet Planetary Health.

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Can adrenaline auto-injectors prevent fatal anaphylaxis?

Individuals at risk of anaphylaxis-an acute systemic hypersensitivity reaction to an allergen or trigger, typically associated with skin reactions, nausea/vomiting, difficulty breathing, and shock-are often prescribed adrenaline (epinephrine) autoinjectors such as EpiPens. A recent review published in Clinical & Experimental Allergy finds that these autoinjectors, which people use to self-administer adrenaline into the muscle, can deliver high doses of adrenaline into the blood, but these levels are short-lived and may not be sufficient to save lives in cases of fatal anaphylaxis.

Investigators noted that data from animal and human studies suggest that intravenous adrenaline infusions delivered directly into the blood can prevent fatal anaphylaxis, but adrenaline autoinjectors may have little impact in such deadly cases.

“For effective management of the most severe allergic reactions, adrenaline given by continuous intravenous infusion, with appropriate fluid resuscitation, is likely to be required-how this is safely achieved in the pre-hospital setting remains to be determined,” the authors wrote. This challenge stems from the fact that fatal anaphylaxis is unpredictable and fast. Fortunately, fatality is rare, with a population incidence of 0.03–0.51 per million per year.

Reference:

Adrenaline Auto-injectors for Preventing Fatal Anaphylaxis, Clinical & Experimental Allergy, DOI: 10.1111/cea.14565

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Confusion over RGUHS PG final exam eligibility requirements! Doctors seeks clarification from NMC

Highlighting the concerns regarding the contradictory eligibility criteria set by the National Medical Commission (NMC) and the State Health Universities, the doctors have sought clarification from the Postgraduate Medical Education Board (PGMEB) of the Apex Medical Commission.
In this regard, the United Doctors Front Association (UDFA) referred to a recent notice issued by the Rajiv Gandhi University of Health Sciences (RGUHS) on 01.10.2024 and also the notice issued by NMC on 06.09.2024 and claimed that these two notices have created confusion in the minds of the PG students of the 2021 batch who are due to appear for their final exams.
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Implementation of facial recognition-based attendance system opposed by TN Govt doctors

Objecting to the proposal of implementing a facial recognition-based attendance system for government doctors, the Service Doctors and Post Graduates recently approached the Chief Secretary of the State Government.
Writing to the Chief Secretary, the General Secretary of Service Doctors and Post Graduates Association (SDPGA), A. Ramalingam questioned the need to implement such an attendance system for doctors employed under the Directorates of Public Health and Preventive Medicine and Medical and Rural Health Services, The Hindu has reported.

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Govt invites applications to fill up top NMC vacant posts

The Union Ministry of Health and Family Welfare has invited applications to fill up the vacant posts in the four Autonomous Boards of the National Medical Commission (NMC), Mint has reported.
Applications have been invited for the posts of President, Secretary, and members of the Commission, along with the key positions in the four boards under the NMC.
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New Study Shows Chest CT Scans Can Predict Hip Fracture Risk Using PMI and T4HU

China: In a recent study published in Orthopaedic Surgery, researchers discovered that chest CT scans—commonly used for diagnosing respiratory conditions—can also serve as a valuable tool for assessing the risk of hip fractures.

The study found that chest CT scans, conducted for other medical reasons, can predict hip fracture risk by assessing the pectoral muscle index (PMI) and the attenuation values of vertebral bodies. Using CT scans in this manner demonstrates an impressive area under the receiver operating curve of 0.86.

The research team noted, “Our findings reveal that, compared to the healthy control group, individuals with hip fractures were older and exhibited lower body mass index, bone mineral density, T4 Hounsfield Units (T4HU) at the fourth thoracic vertebra, and pectoral muscle index volume.”

Hip fractures (HF) are often referred to as the “last fracture of life” for the elderly, making their risk assessment critically important. While research into the link between chest computed tomography (CT) imaging and HF has been limited, recent findings offer new insights.

Sheng Pan, Department of Osteoporosis, The Second Affiliated Hospital of Soochow University, Suzhou, China, and colleagues showed that PMI and vertebral body attenuation values obtained from chest CT scans can predict HF risk. This approach provides an opportunistic method to evaluate HF risk in patients without access to bone mineral density (BMD) testing, leveraging chest CT scans performed for other medical conditions.

In a retrospective study from January 2021 to January 2024, 800 participants with BMD measurements and chest CT scans were initially enrolled. Following exclusions, 472 patients were included in the final analysis, categorized into a healthy control (HC) group and a hip fracture (HF) group.

Clinical data were gathered and compared between the two groups. A predictive model was developed using logistic regression, incorporating the pectoral muscle index (PMI) and the Hounsfield units of the fourth thoracic vertebra (T4HU). The model’s predictive accuracy was evaluated through receiver operating characteristic (ROC) curve analysis. Additionally, decision curve analysis (DCA) and clinical impact curves were used to assess the model’s practical utility in a clinical setting.

The following were the key findings of the study:

  • PMI and T4HU were lower in the HF group than in the HC group; low PMI and low T4HU were risk factors for HF.
  • The predictive model incorporating PMI and T4HU based on age and BMI had excellent diagnostic efficacy with an area under the curve (AUC) of 0.865, sensitivity, and specificity of 0.820 and 0.754, respectively.
  • The clinical utility of the model was validated using calibration curves and DCA.
  • The AUC of the predictive model incorporating BMD based on age and BMI was 0.865, with sensitivity and specificity of 0.698 and 0.711, respectively.
  • There was no significant difference in diagnostic efficacy between the two models.

The researchers concluded that PMI and T4HU are effective predictors of hip fractures. In the absence of dual-energy x-ray absorptiometry (DXA), they found that assessing PMI and T4HU from chest CT scans performed for other medical conditions can reliably gauge HF risk. This method allows for timely intervention and treatment, potentially reducing the incidence of hip fractures.

Reference:

Wang, X. Y., Yun, S. M., Liu, W. F., Wang, Y. K., Pan, S., & Xu, Y. J. Opportunistic Assessment of Hip Fracture Risk Based on Chest CT. Orthopaedic Surgery. https://doi.org/10.1111/os.14224

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H. pylori stool antigen and fecal immunochemical tests combo fails to lower gastric cancer mortality: JAMA

A new study published in the Journal of American Medical Association showed that the combination of testing for H pylori stool antigen (HPSA) and fecal immunochemical tests (FIT) did not lower the incidence of stomach cancer or gastric cancer death when compared to a FIT invitation alone.

It is uncertain how Helicobacter pylori screening affects the incidence and death of stomach cancer. This study was carried out to determine if, among the individuals invited for fecal immunochemical testing-based colon cancer screening, the rates of gastric cancer incidence and death are lower when FIT is combined with a stool antigen test for Helicobacter pylori.

This practical randomized clinical study included the inhabitants of Taiwan between the ages of 50 and 69 who are qualified for biannual fecal immunochemical testing (FIT) for the detection of colon cancer. FIT evaluation alone or an invitation for H. pylori stool antigen (HPSA)+FIT examination was given to participants at random. Between January 1, 2014, and September 27, 2018, this study was carried out. The last follow-up took place on December 31, 2020. Invitation for testing for H. pylori stool antigen was the major intervention technique. The incidence and mortality of stomach cancer were the main results. Every invited person was examined in accordance with the groups to which they were randomly assigned.

  • The screening participation rates for individuals who were invited were 35.7% for FIT alone and 49.6% for HPSA + FIT. Of the 12,142 individuals whose HPSA results were positive, 8664 underwent antibiotic therapy, and 91.9% had their infection eradicated.
  • The incidence rates of gastric cancer were 0.037% in the FIT-alone group and 0.032% in the HPSA+FIT group. The death rates from gastric cancer were 0.013% in the FIT-alone group and 0.015% in the HPSA+FIT group.
  • Following post hoc analysis to account for variations in screening participation, follow-up duration, and patient characteristics, an invitation for HPSA + FIT was linked to decreased incidence of gastric cancer but not gastric cancer death when compared to FIT alone.
  • The most frequent side effects among people who took antibiotics were dyspepsia or decreased appetite and diarrhea or stomach discomfort.

Overall, an offer to test for H pylori stool antigen in conjunction with FIT did not significantly lower incidence of gastric cancer when compared to an invitation for FIT alone, although the results might have been influenced by variations in screening participation and follow-up time between the two groups.

Source:

Lee, Y.-C., Chiang, T.-H., Chiu, H.-M., Su, W.-W., Chou, K.-C., Chen, S. L.-S., Yen, A. M.-F., Fann, J. C.-Y., Chiu, S. Y.-H., Chuang, S.-L., Chen, Y.-R., Chen, S.-D., Hu, T.-H., Fang, Y.-J., Wu, M.-S., Chen, T. H.-H., Yeh, Y.-P., Lin , Jaw-Town, … Hsu, C.-Y. (2024). Screening for Helicobacter pylori to Prevent Gastric Cancer. In JAMA. American Medical Association (AMA). https://doi.org/10.1001/jama.2024.14887

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