Obesity and Lifestyle Changes: A Global Risk Factor for Cancer View PDF

M Thanmai Nagasri
Medicine, Mallareddy Medical College , Hyderabad, India

Published on: 2023-10-12

Abstract

Obesity is a well-established risk for numerous cancers. It is found to significantly increase the risk of developing post-menopausal breast, colorectal, endometrial, kidney, esophageal, pancreatic, liver, and gallbladder cancer. In fact, studies have shown that excess body fat can lead to an approximate 17% higher risk of cancerspecific mortality. Moreover, research has also linked obesity to other common cancers such as breast cancer, colorectal cancer, esophageal cancer, gallbladder cancer, uterine cancer, pancreatic cancer, and liver cancer. Not only does obesity increase the risk of developing these cancers, but it can also impact the outcome and treatment choices for individuals diagnosed with cancer. In fact, Obesity is estimated to be responsible for about four to eight percent of all cancers. Understanding mechanisms at work by which obesity contributes to the development of cancer is complex and still not fully understood. However, changing lifestyles such as adopting a healthy diet, engaging in regular exercise, and behavior therapy have been shown to be effective interventions. In some cases, weight loss surgery and drug therapy may be considered for a specific group of cancer survivors who are also dealing with obesity. In conclusion, this review emphasizes the importance of recognizing the epidemiology and risks associated with cancer in obese individuals. It also underscores the significance of managing obesity through various interventions to reduce the incidence and recurrence of cancer.

Keywords

Cancer, Boby mass index, Obesity, Overweight

Introduction

Hyperglycemia brought on by a shortage of insulin secretion, insulin action, or both is the hallmark of the collection of metabolic diseases known as diabetes. Diabetes-related chronic hyperglycemia is linked to long-term harm, malfunction, and failure of many systems, particularly the kidneys, nerves, heart, and blood vessels. Any glycemic intolerance that starts or is discovered during pregnancy is known as gestational diabetes (GDM) [1]. GDM’s pathogenesis has been connected to the deregulation of inflammatory markers that block insulin action [2], which often worsens the condition of insulin resistance during pregnancy. It is a frequent pregnancy problem that affects 1–14% of expectant mothers annually [3]. GDM is a clinical disease that requires careful consideration since between 30% and 70% of individuals with GDM may subsequently acquire type 2 diabetes mellitus (T2DM). It is known that pregnant women with GDM and pregnant women lacking GDM have different cytokine and adipokine profiles.

The pro-inflammatory cytokines tumor necrosis factor-4 and C-reactive protein, leptin, and triglycerides [4, 5], while adiponectin levels appear to be significantly lower, are elevated in women with GDM. These factors result in a greater leptin/adiponectin ratio [6], inhibited pancreatic insulin secretion, and elevated insulin resistance, which is also present in people with T2DM. It plays a role in the pathophysiology of GDM, and it is widely believed that having diabetes will result in the onset of atherosclerosis and that an increase in the possibility of having a large-for-gestational-age baby is associated with a drop in adiponectin levels throughout pregnancy. Uncertainty exists about the degree to which parental glucose management impacts these biomarkers. The cord adiponectin and leptin concentrations in newborns delivered to mothers with GDM are altered by treatment that includes dietary counseling and, where necessary, pharmacological therapy, according to a nested investigation of the ACHOIS randomized trial [7].

Women with GDM who got prenatal care for two weeks were compared to women with GDM who got additional positive and constructive feedback on glycaemia adherence in a randomized study. 84% of the women in the group receive daily suggestions [8]. It is crucial to assess whether adherence to more rigorous and less stringent objectives impact maternal and baby biomarkers when examining the research on the adoption of stricter glucose goals and changes in biomarkers. The purpose of this study was to examine the effects of various glycemic target intensities on maternal triglycerides, cholesterol, C-reactive protein, leptin, and adiponectin, as well as the cardiometabolic, growth, and systemic inflammation of newborn umbilical cord plasma C-peptide, leptin, adiponectin, and insulinlike growth factor (IGF). In contrast, a study of GDM-affected women indicated that 62% of them had the worst problem achieving suggested fasting objectives and that 62% of them were constantly or often hungry [9].

 

Methods

The targeted trial, a progressive wedge cluster randomized controlled trial, includes the study. Women who took part in the study had their glucose meters checked to see if at least 80% of their postprandial, fasting, or both of those objectives had been fulfilled. Mothers’ blood was drawn into lithium-heparin-coated tubes (BD Vacutainer 367526) at study entrance, at 36 weeks, and for six months following delivery. The tubes were then centrifuged at 1300 g at 4 °C for ten minutes. In preparation for further examination, plasma was taken, aliquoted, and kept at -80 °C. On the basis of the consensus report from the National Institutes of Health, the ADA has updated the recommendation for the diagnosis of GDM somewhat (NIH). IGF-1 was evaluated to use the ELISA Abcam Simple Step in more than 200,000 instances annually since GDM complicates about 7% of births (from 1% to 14% based on the population investigated and the diagnostic tests utilized) [10]. To use the Magnetic Luminex Assay, the amounts of adiponectin and leptin were examined. A Cobas autoanalyzer E411 was used to quantify the C-peptide concentration. Throughout the analysis, the proper effective performance measurement and quality control tools were employed. It is commonly acknowledged that having diabetes causes the formation of atherosclerosis.

An early indication of atherosclerosis is the carotid endothelium’s thickness. The patients were examined based on the therapies their hospital was randomly assigned to and the date of their GDM diagnosis using the intention-to-treat method. We used generalized linear mixed effects models with error terms for hospital categories and participants and fixed variables for treatment implementation and time to estimate the therapy’s main impact. The period of time between the woman’s enrolment and the beginning of the set targets was expressed in months. The research design induced a causal link between time and the desired result, yet time isn’t included in the analysis, which may alter magnitude estimations. Time was thus included in the equation to account for secular changes across time [11]. Using their log-transformed data, analyses compared the mean biomarker levels between the more tightly targeted audience and the less strictly targeted group. Information from women with GDM acquired during a tighter goal period was included in the stricter target group, whereas statistics from women recruited during a less rigorous goal period were included in the stricter target group. Adherence to fasting, postprandial, or combined fasting and postprandial objectives was determined at 80%, and analyses were carried out as previously mentioned for these subgroups. The significance of the data was assessed using P and 0.05. Similar to T2DM, GDM hyperglycemia is linked to decreased pancreatic insulin release and elevated resistance to insulin [12, 13]. Prior research has shown a strong correlation between GDM and the eventual onset of T2DM [14].

Results and Discussion

Participants were assessed based on the time they were diagnosed with GDM or which therapy goal their hospital was randomly assigned to during analyses using the intention-to-treat method. The period of time between the woman’s enrolment and the beginning of the set targets was expressed in months (Figure 1). The research design generates a relationship between time and the result of interest, and the non-linearity of time in the model might alter magnitude estimations; therefore, time was included in the equation to account for secular changes across time. Primary analyses of biomarkers now account for baseline values and gestational age via the OGTT. A predetermined exploratory analysis that we conducted revealed a substantial imbalance between the glycemic goal groups, even after further controlling for baseline determinants of body mass index, ethnicity, and history of diabetes. Using their log-transformed data, analyses determined the differential in mean biomarker values between the tighter target audience and the more tolerant target group. Analysis was done as previously mentioned for these subgroups. Adherence was defined as attaining 80% of fasting, postprandial, or combined fasting and postprandial targets. By using P 0.05, statistical significance was calculated. If an individual can take two distinct tests and the findings are inconsistent, the test with the result that is higher than the diagnosis cutoff should be repeated, and the diagnosis should be established using the validated test. Women with a history of GDM should undergo non-pregnant OGTT screening for type 2 diabetes 6–12 weeks postpartum, since some occurrences of GDM may reflect undetected type 2 diabetes. A1C is not advised for use at the postpartum visit for the diagnosis of chronic diabetes due to the gestational treatment of hyperglycemia [15]. 

Conclusion

Cardiometabolic marker concentrations in maternal blood and newborn umbilical cord plasma were not different when more severe glycemic objectives were used in general in women with GDM compared to less stringent targets. As opposed to reaching less stringent targets, using tougher goals for glycemic management in GDM patients who achieved 80% fasting or both fasting and postprandial levels decreased maternal blood leptin concentrations and newborn cord C-peptide and leptin concentrations. These findings imply that IGF levels in umbilical cord plasma rise in response to and defy more stringent postprandial glycemic limits. The rise in IGF concentrations was no longer statistically significant once analyses were corrected for ethnicity, body mass index, and history of GDM, indicating that variables other than glycemic management may have contributed to the change in IGF concentrations. These contradictory findings demonstrate the need for more investigation into how glycemic control affects cord IGF.

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