Every day, the food we consume is converted into glucose, providing energy for our bodies.
Once glucose enters the bloodstream, the body relies on a sophisticated regulatory mechanism to maintain blood glucose within a relatively stable range.
Among these mechanisms, insulin is a key hormone responsible for maintaining glucose homeostasis.
So, why does diabetes occur?
How does insulin regulate blood glucose?
What happens when insulin “fails,” and how can blood glucose be managed?
As an important part of pharmacological treatment, what role does the drug delivery system play?
From blood glucose regulation within the human body to drug delivery outside the body, these processes form a complete chain of health management.
Diabetes has become one of the world's major chronic metabolic diseases.
According to the International Diabetes Federation (IDF) Diabetes Atlas, 11th Edition (2025), approximately 589 million adults aged 20–79 were living with diabetes globally in 2024. This number is projected to increase to approximately 853 million by 2050.
With factors such as population aging and changes in lifestyle, the global demand for long-term diabetes management continues to grow.
The World Health Organization (WHO) also recognizes diabetes as a chronic condition requiring long-term management. Persistently elevated blood glucose levels may increase the risk of complications affecting the cardiovascular system, kidneys, eyes, and nervous system.
Therefore, diabetes management is not simply about “lowering blood glucose.” It involves a comprehensive approach combining:
Dietary management + regular physical activity + blood glucose monitoring + medication + long-term follow-up
All of these are closely associated with one key hormone in the human body—insulin.
1. Why does blood glucose rise after eating?
Carbohydrates in food are digested and broken down into glucose, which then enters the bloodstream.
In simple terms:
Eating → Glucose enters the bloodstream → Blood glucose rises
At this point, the pancreatic β-cells sense the change in blood glucose and secrete insulin.
2. How does insulin work?
Insulin can be understood as an important signaling hormone involved in glucose metabolism.
After binding to insulin receptors on the surface of cells, insulin activates a series of intracellular signaling pathways.
In skeletal muscle and adipose tissue, for example, insulin promotes the translocation of GLUT4 to the cell membrane, thereby increasing glucose uptake by cells.
Insulin also:
Promotes glucose utilization — helping cells take up glucose and use it for energy metabolism;
Promotes glycogen storage — enabling the liver and muscles to store part of the glucose as glycogen;
Suppresses hepatic glucose output — reducing excessive glucose production and release by the liver;
Regulates energy storage — participating in the metabolism of fats, proteins, and other nutrients.
Through these multiple metabolic pathways, insulin helps maintain blood glucose within a relatively stable range.
In simple terms:
Blood glucose rises → Insulin is released → Glucose enters cells → Glucose is utilized or stored → Blood glucose returns toward a stable level
When the body cannot produce sufficient insulin, or when cells become less responsive to insulin, glucose cannot be effectively utilized, potentially resulting in persistently elevated blood glucose.
Because the underlying mechanisms differ among types of diabetes, management strategies also vary.
1. Type 1 Diabetes: Insufficient Insulin Secretion
Type 1 diabetes is generally associated with autoimmune-mediated destruction of pancreatic β-cells, resulting in a significant reduction or complete loss of insulin secretion.
Therefore, for people with Type 1 diabetes, insulin replacement therapy is essential for survival.
Management may also include:
Blood glucose monitoring;
Appropriate dietary management;
Regular physical activity;
Adjusting insulin doses in relation to meals, physical activity, and other factors.
The goal is to approximate physiological insulin replacement as closely as possible while maintaining stable blood glucose levels.
2. Type 2 Diabetes: Insulin Resistance + Declining β-Cell Function
Type 2 diabetes is generally associated with insulin resistance and a progressive decline in pancreatic β-cell function.
Early management typically focuses on lifestyle interventions, including:
Healthy diet + regular physical activity + weight management + blood glucose monitoring
If lifestyle interventions alone do not achieve treatment goals, appropriate glucose-lowering medications may be prescribed according to the individual's condition.
As the disease progresses, pancreatic β-cell function may decline further, and some patients may require insulin therapy.
Therefore, Type 2 diabetes management is typically a dynamic and long-term process that requires ongoing adjustment.
3. Other Types of Diabetes: Identify the Cause and Manage Accordingly
In addition to Type 1 and Type 2 diabetes, other types include gestational diabetes and diabetes caused by specific genetic factors, pancreatic diseases, endocrine disorders, certain medications, and other underlying conditions.
For these forms of diabetes, management focuses on:
Identifying the underlying cause → Managing the primary condition → Selecting an appropriate treatment strategy based on blood glucose levels
Therefore, there is no single management approach that is suitable for every person with diabetes.
Specific treatment plans should be developed by healthcare professionals based on the type of diabetes, blood glucose levels, complications, and individual circumstances.
NEST pen injectors provide reliable support for drug delivery.
From insulin secretion within the human body to pharmacological treatment and the stable delivery of medication, every step requires reliable products and technologies.
In the fields of pharmaceutical packaging and drug delivery systems, NEST continues to expand its portfolio of high-end medical devices and pharmaceutical packaging solutions, including pen injectors, prefilled syringes, and cartridges, providing diverse options for different drug delivery applications.
Disposable Pen Injectors
Designed for a simple and straightforward administration process, suitable for drug delivery applications where convenience and ease of use are important.
Inner-Rotating Pen Injectors
Featuring an inner-rotating structural design to support stability during the drug delivery process and enhance the user experience.
Prefilled Pen Injectors
Designed to simplify administration and reduce operational complexity, making them suitable for long-term medication management and home-use applications.
Reusable Pen Injectors
Support repeated dose setting and administration and can be used with replaceable drug containers, making them suitable for long-term, repeated administration.
High Customization
Appearance, color, dosage, graduation markings, and other specifications can be customized according to customer requirements.
Stable Manufacturing Capabilities
NEST continuously optimizes processes across materials, tooling, injection molding, and product manufacturing, providing a stable manufacturing foundation for medical devices and pharmaceutical packaging products.
Diverse Product Portfolio
From pen injectors and prefilled syringes to cartridges, NEST continues to expand its product portfolio of drug containers and delivery systems, providing options for different drug delivery applications.
International Quality Systems
NEST has established relevant quality management systems, including ISO 9001 and ISO 13485, and continues to strengthen its capabilities in R&D, manufacturing, and quality management.
Insulin is an important hormone for maintaining blood glucose homeostasis.
Diabetes management is a long-term and comprehensive process.
And drug delivery systems serve as an important link between medication and patients.
From “how blood glucose is regulated” to “how medication is delivered reliably,” advances in medical technology continue to focus on one goal:
Making treatment more precise and drug delivery more reliable.
NEST remains committed to advancing high-end medical devices and pharmaceutical packaging solutions. From drug containers to drug delivery systems, NEST continues to expand its product portfolio and leverage stable manufacturing capabilities and rigorous quality management to provide reliable product support for customers worldwide.
