When the body struggles to regulate blood sugar levels, diabetes can develop. Elevated sugar levels can lead to severe health issues affecting various parts of the body, such as the eyes, heart, kidneys, feet, and nerves, along with short-term complications like hyperglycemia and hypoglycemia.
Individuals with diabetes can live fulfilling lives with proper management. In the UK, over 3.8 million adults have been diagnosed with diabetes, with almost 1 million unaware of their condition.
Adopting a healthy lifestyle through diet, physical activity, and weight control significantly reduces the risk of type 2 diabetes.
Risk factors for type 2 diabetes can be mitigated through lifestyle adjustments. While factors like age and family history are beyond control, making healthy choices can decrease the overall risk.
Helena Gibson-Moore, Nutrition Scientist, British Nutrition Foundation
Key Points About Diabetes
- Both type 1 and type 2 diabetes result from the body’s inability to regulate blood sugar, leading to health complications.
- About 90% of diabetes cases are attributed to type 2 diabetes.
- Type 2 diabetes is closely associated with obesity.
- Preventative measures are more achievable for type 2 diabetes compared to type 1 diabetes.
Understanding the Types of Diabetes
Distinctive Features of Type 1 and Type 2 Diabetes
Approximately 90% of individuals with diabetes are diagnosed with type 2 diabetes.
- Type 2 diabetes stems from inadequate insulin production or resistance, leading to sugar accumulation in the blood.
- Typically diagnosed in adults over 40, type 2 diabetes is linked to excess weight and obesity, although not limited to this demographic.
- Managing type 2 diabetes involves lifestyle changes, dietary adjustments, physical activity, and sometimes medication.
On the other hand, about 10% of diabetes cases are due to type 1 diabetes.
- Type 1 diabetes is an autoimmune disorder where insulin-producing cells are destroyed, necessitating external insulin administration.
- The cause of type 1 diabetes remains unknown, possibly triggered by infections.
Reducing the Risk of Type 2 Diabetes
Modifying lifestyle habits, focusing on weight management, and making healthy choices play a crucial role in lowering the risk of type 2 diabetes.
Factors such as weight, age, family history, ethnicity, and lifestyle contribute to the likelihood of developing type 2 diabetes.
Additional factors like high blood pressure, gestational diabetes, and metabolic syndrome also increase the chances of developing type 2 diabetes.
Healthy Living to Prevent Type 2 Diabetes
Incorporating a balanced diet, engaging in physical activities, and controlling weight are essential in reducing the risk of type 2 diabetes.
Tips for a Balanced Diet
Following UK dietary guidelines that prioritize starchy foods, fruits, vegetables, and limiting saturated fats, sugar, and salt is key for a healthy diet.
Individuals with diabetes must pay close attention to starchy carbohydrates and portion sizes to manage blood sugar effectively.
Physical Activity for Diabetes Prevention
Participating in adequate aerobic and strength exercises is recommended for adults to lower the risk of type 2 diabetes.
Type 1 diabetes results from a lack of insulin production due to immune system attacks, while type 2 diabetes involves insufficient or ineffective insulin in the body.
Eight percent of individuals have type 1 diabetes, and 90% have type 2 diabetes, highlighting the importance of proper management.
Significant Differences Between Type 1 and Type 2 Diabetes
Understanding the distinctions between type 1 and type 2 diabetes is crucial for effective treatment and management.
Risk factors, symptoms, and management approaches vary between the two types, underscoring the necessity of personalized care.
Advancements in Diabetes Research
Research efforts continue to enhance our understanding of risk factors for type 1 and type 2 diabetes.
Family history and genetics can elevate the risk of both type 1 and type 2 diabetes.
Ethnicity and Age in Diabetes Risk
Type 1 diabetes can be diagnosed at any age but is more prevalent in individuals under 40.
Risk Factors for Type 2 Diabetes
Unlike type 1 diabetes, the likelihood of developing type 2 diabetes increases with age and ethnicity. Individuals of white descent over 40 and those of African-Caribbean, Black African, Chinese, or South Asian descent over 25 face higher risks.
Various factors apart from obesity contribute to the risk of type 2 diabetes, emphasizing the need for preventive measures through a healthy lifestyle.
Shared Symptoms of Type 1 and Type 2 Diabetes
Both type 1 and type 2 diabetes present common symptoms such as frequent urination, excessive thirst, fatigue, unintended weight loss, genital itching, slow wound healing, blurred vision, and increased hunger.
While symptoms of type 1 diabetes appear quickly, those of type 2 diabetes develop gradually, sometimes leading to undiagnosed cases for several years.
Managing the Emotional Impact of Diabetes
Living with either type 1 or type 2 diabetes can have emotional ramifications. Support is vital in helping individuals cope with the condition and potential stigma.
Helplines and forums are available to offer assistance and connect individuals with similar experiences.
Listen to our podcast on diabetes stigma featuring individuals with type 1 and type 2 diabetes.
Ongoing Efforts in Diabetes Research
While no definitive cure exists for type 1 or type 2 diabetes, ongoing research aims to enhance screening methods and develop innovative treatments.
Some individuals with type 2 diabetes have successfully reversed the condition through weight loss, dietary modifications, and medical interventions.
Diabetes affects over 5.8 million individuals in the UK, with numbers steadily rising.
Recent data indicates that nearly 4.6 million in the UK have diabetes diagnoses, with an additional 1.3 million potentially undiagnosed cases of type 2 diabetes.
Statistics on Diabetes Types
About 8% of individuals living with diabetes have type 1 diabetes.
The Prevalence of Type 2 Diabetes
Conversely, approximately 90% of diabetes cases are attributed to type 2 diabetes.
Other Forms of Diabetes
The remaining 2% of cases are made up of other forms of diabetes.
High-Risk Population for Diabetes
An estimated 6.3 million individuals in the UK face a high risk of developing type 2 diabetes, with around 1.3 million currently undiagnosed. This puts approximately 12.1 million UK adults at risk of diabetes or prediabetes.
Risk factors for type 2 diabetes vary and include age, family history, ethnicity, and weight status.
Strategies like lifestyle modifications, healthy eating, and weight management significantly reduce the risk of type 2 diabetes.
Ethnic Predisposition to Diabetes
Individuals of certain ethnicities have a heightened susceptibility to diabetes, with Asian, Chinese, Black African, and Black Caribbean populations at a higher risk of the condition.
Ongoing Efforts in Diabetes Care
Continuous efforts are in place to enhance diabetes care, management, and research with the ultimate goal of finding a cure for both type 1 and type 2 diabetes.
Without proper management, diabetes can lead to severe complications like amputations, strokes, heart attacks, and heart failure.
For More Information
Explore our comprehensive report on diabetes care and prevention for further insights and recommendations.
Access Further Resources
Access the Workforce Survey Report 2022 by ABCD, Diabetes UK, and the Society for Endocrinology on the ABCD website.
Increase in Prescriptions for Diabetes
There has been a noticeable increase in prescribed items for individuals with diabetes in England, indicating the growing prevalence of the condition.
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Managing Obesity in Diabetes
Excess weight or obesity affects more than 90% of diabetes patients, aggravating insulin resistance and diabetes complications. Proper obesity management is crucial in enhancing outcomes and preventing progression.
Understanding the connection between obesity and diabetes is essential for clinicians to offer comprehensive care and support to patients with both conditions.
Diagnosing Obesity and Recommendations
Obesity is diagnosed using BMI as an estimate of adiposity. Guidelines suggest evaluating metabolic health alongside BMI annually. Patients with a BMI ≥25 kg/m2 should be assessed for excessive adiposity. Overweight or obese patients should be screened for comorbidities. Common complications exacerbated by excess adiposity include high blood pressure and hypertriglyceridemia. Sensitivity should be exercised in discussions about weight loss. The 5 A’s model for behavior change can enhance motivation for weight loss. An initial weight loss goal of 5-10% is recommended for treatment. Health improvements in type 2 diabetes are evident with a weight loss of 9-13 kg. High-intensity weight loss programs are advised for individuals with obesity and type 2 diabetes.
Concluding Remarks
It is recommended to start with a weight loss of 5–10% of the initial body weight. The American Diabetes Association (ADA) suggests that individuals with prediabetes aim to lose 7% of their initial body weight to prevent diabetes. Studies have shown that weight loss leads to improved health outcomes. The Look AHEAD trial participants demonstrated significant improvements in health. Consistent weight loss benefits patients with diabetes and overweight/obesity. A sustained 7% weight loss can positively impact individuals with diabetes and overweight/obesity.
Clinician-Managed Weight Loss Support Versus Referral to a Weight Loss Program
Healthcare providers should assess their ability to provide intensive counseling and follow-up for weight loss or consider referring patients to external weight loss programs. High-intensity programs are preferred. Healthcare providers offering intensive weight loss support should schedule appointments with patients every 3 months to monitor blood glucose levels. Weight loss interventions should include behavioral therapy and counseling. Medicare covers obesity screening and intensive counseling in primary care. Referring patients to evidence-based commercial weight loss programs is advised.
Table 3 summarizes the outcomes of popular commercial weight loss programs in Randomized Controlled Trials (RCTs): Weight Watchers, Jenny Craig, and Nutrisystem.
| Time Point | Mean Weight Loss (kg) | RCTs Conducted in Patients With Diabetes? | A1C Change (%) | Patients Who Reduced Diabetes Medications (%) |
|---|---|---|---|---|
| Weight Watchers | 12 Months | –3.0 to –9.1 | No | — |
| Jenny Craig | 12 Months | –6.6 to –10.1 | Yes | –0.3 to –0.7 |
| Nutrisystem | 6 Months | –7.3 to –10.8 | Yes | –0.7 |
Another option for community referral is the Centers for Disease Control and Prevention (CDC) National Diabetes Prevention Program (DPP), which is based on the Diabetes Prevention Program RCT. It has demonstrated a significant decrease in the progression to diabetes compared to control groups. Patients with prediabetes can be directed to a clinical center or YMCA offering a certified National DPP program. Starting in January 2018, Medicare will cover National DPP interventions, benefiting Medicare patients with prediabetes.
Behavioral Components of Weight Loss and Weight Loss Maintenance
Behavioral changes and programs focused on weight aim for a daily caloric deficit of 500–750 kcal. Various dietary approaches can lead to weight loss if they meet calorie reduction goals. Each approach is safe for individuals with diabetes when they adhere to calorie restrictions. Opting for meal replacements may be beneficial for individuals with limited time for food preparation. Depending on their medications, patients might need to monitor their blood glucose more closely when reducing calories.
TABLE 4.
Eating Patterns With Equivalent Effects on Weight Loss
| • Low glycemic index/load | • Low carbohydrate |
| • High protein | • Moderate carbohydrate–moderate protein |
| • Low fat | • Mediterranean style |
Reducing caloric intake is more effective for initial weight loss than solely increasing physical activity. Dietary modifications alone resulted in higher weight loss after 6 months compared to solely focusing on physical activity. While physical activity is crucial for weight maintenance, it should not be the primary focus for weight loss. Insulin users should monitor their glucose levels more closely when starting a new exercise routine. According to CDC recommendations, adults should aim for 150 minutes per week of moderate aerobic activity and resistance exercise.
Self-monitoring is key for successful weight loss and maintenance. Regular weighing can help control calorie intake and promote weight loss. Guidelines from AHA/ACC/TOS and AACE/ACE recommend monitoring physical activity and food intake.
For maintaining weight loss, ADA guidelines suggest referring diabetes patients to a long-term weight maintenance program that includes regular visits, weight measurements, and physical activity.
Medication Management
Aside from lifestyle changes, healthcare providers play a crucial role in managing medications for individuals with type 2 diabetes and obesity. They should consider adjusting diabetes medication regimens and utilizing weight-loss medications.
Glucose-lowering medications like metformin, pramlintide, GLP-1 receptor agonists, DPP-4 inhibitors, and SGLT2 inhibitors can aid in weight loss efforts. Some medications either have a neutral effect on weight or promote weight loss. It is important to avoid medications associated with weight gain. AACE/ACE guidelines recommend weight loss medications for patients with a BMI ≥27 kg/m².
TABLE 5.
FDA-approved medications for long-term weight management:
| Medication (Brand Names) | Action Mechanism | Top 5 Side Effects | Safety Considerations * | Average Weight Loss After 1 Year vs. Placebo (Dosage) | Change in A1C Levels for Diabetic Patients (%) |
|---|---|---|---|---|---|
| Reduces the body’s ability to absorb | |||||
| Orlistat (Alli, Xenical) | Lipase inhibitor | Side effects include abdominal pain, bloating, urgent need for bowel movements, lower back pain, and headaches | May lead to deficiencies in fat-soluble vitamins, impact absorption of certain medications, and increase risk of gallstones and kidney stones | Average weight loss of 3.4 kg and 4.0% reduction in body weight with a dosage of 120 mg three times a day | Negative impact on LDL cholesterol levels by 0.7 points |
| Lorcaserin (Belviq) | Activates serotonin receptors | Common side effects include headache, nausea, dizziness, fatigue, and nasopharyngitis | Severe side effects may include serotonin syndrome, hypertension, and edema; should be avoided in patients with liver and renal failure | Average weight loss of 3.3 kg or 3.6% body weight with a dose of 10 mg twice daily | Decrease in BMI by 1.1 points |
| Contrave: Naltrexone/Bupropion Combination | Works as an opiate antagonist and reduces norepinephrine re-uptake | Common side effects include constipation, nausea, headache, dry mouth, and trouble sleeping | Use caution in patients with depression, anxiety, acute angle-closure glaucoma, high blood pressure, or kidney problems | Average weight loss of 4.1 kg with a 5.2% decrease in body weight (16/80 mg doses twice a day) | Negative impact on weight loss at -0.6 |
| Liraglutide (Saxenda) | GLP-1 receptor agonist | Side effects include hypoglycemia, constipation, nausea, headache, and indigestion | Possible complications are gastroparesis, suicidal thoughts, increased heart rate; use with caution in cases of pancreatitis and cholelithiasis | Average weight loss of 4.5 kg and 5.6% (with a dose of 3 mg daily) | Results in weight reduction ranging from -0.6 to -1.8 |
Each medication’s package insert contains a detailed list of safety concerns, provided by the pharmaceutical company that manufactures the drug.
A study on A1C change was conducted solely on individuals with prediabetes.
Definitions for BID (twice daily), GABA (gamma-aminobutyric acid), and TID (three times daily) are essential to understanding medical instructions and dosage requirements.
Obesity is on the rise among patients with type 1 diabetes. To combat this trend, individuals with type 1 diabetes must continue taking insulin while aiming to reduce caloric intake by 500-700 kcal/day. Physical activity guidelines from the CDC should also be followed, which recommend 150 min/week of moderate aerobic exercise and two resistance training sessions weekly. Monitoring for hypoglycemia is crucial for those embarking on a new exercise regimen or reducing their caloric intake. Additionally, weight loss medications and treatments like pramlintide can be considered for those with type 1 diabetes.
Weight loss is especially important for individuals with both diabetes and obesity, necessitating adherence to guidelines for managing obesity in type 2 diabetes patients. Referral to high-intensity weight loss programs, caloric reduction, exercise, and appropriate medication choices are all key aspects of a successful weight loss strategy for these individuals.
Funding for this research was provided by the National Heart, Lung, and Blood Institute and the National Institute of Diabetes and Digestive and Kidney Disease. No conflicts of interest were reported in relation to this article.
Various references are available to provide additional information on obesity and weight loss, including the World Health Organization’s fact sheet on obesity and overweight.
1. The effectiveness of various weight-loss programs was reviewed in a recent study published in Annals of Internal Medicine in 2015.
2. A meta-analysis published in JAMA in 2014 compared the weight loss results of different named diet programs for overweight and obese adults.
3. An examination of the impact of commercial weight loss programs on glycemic outcomes for overweight and obese adults with and without type 2 diabetes was conducted in a systematic review published in Obesity Reviews in 2016
4. The reduction in the occurrence of type 2 diabetes through lifestyle changes or metformin treatment was reported in a study published in the New England Journal of Medicine in 2002.
5. A 10-year follow-up study on diabetes development and weight loss in individuals who participated in the Diabetes Prevention Program was published in The Lancet in 2009.
6. The certification of the Medicare Diabetes Prevention Program can be found online.
7. A randomized trial published in JAMA in 2005 compared the Atkins, Ornish, Weight Watchers, and Zone diets for weight loss and reducing the risk of heart disease.
8. A study published in Diabetes Care in 1998 examined the impact of lifestyle interventions on overweight individuals with a family history of diabetes.
9. A randomized trial published in Annals of Internal Medicine in 2017 investigated the maintenance of weight loss after receiving nutrition training.
10. Self-monitoring of weight was identified as a vital component for successful weight loss maintenance in a study published in the journal Obesity in 2007.
11. A study published in PLoS One in 2014 explored whether interruptions in daily self-weighing were associated with weight gain.
12. The comprehensive type 2 diabetes management algorithm was outlined in a consensus statement published in Endocrine Practice in 2017.
13. A study published in Diabetes Care in 2012 examined the long-term safety, tolerability, and weight loss associated with metformin use in the Diabetes Prevention Program Outcomes Study.
14. The effects of metformin treatment on metabolic and cardiovascular risk factors in non-diabetic individuals with obesity were reported in a study published in Diabetes and Metabolism in 2009.
15. A study published in Experimental and Clinical Endocrinology & Diabetes in 2013 investigated the effectiveness of metformin on weight loss in non-diabetic individuals with obesity.