Diabetes is now one of the most common chronic diseases in the United States

More than 37 million Americans have diabetes, and roughly one in five do not know they have it. Type 2 diabetes accounts for about 90 to 95 percent of all cases. Type 1 diabetes, an autoimmune condition, makes up most of the rest. The disease damages blood vessels and nerves over time, leading to heart disease, kidney failure, blindness, and amputation if left unmanaged.

The reason this matters for your planning is straightforward: if you have diabetes or suspect you do, the steps you take now — getting tested, learning to manage blood sugar, taking medication as prescribed — directly affect your independence, your medical costs, and how long you stay out of nursing care. Diabetes is also one of the conditions that makes you may be able to access for certain government programs, disability benefits, and Medicare coverage that would not otherwise be available.

This guide covers what diabetes is, who gets it, how to recognize it, where to get tested and treated, and what financial and care resources exist if you have been diagnosed.

Key Takeaways

  • Type 2 diabetes develops over time and often has no symptoms until damage has already occurred, so screening is important even if you feel fine.
  • A fasting blood sugar test, A1C test, or glucose tolerance test can diagnose diabetes, and your doctor can order these at a regular checkup.
  • Managing diabetes through diet, exercise, medication, and regular monitoring can prevent or delay serious complications like heart disease and kidney failure.
  • Medicare covers diabetes screening, testing supplies, and certain medications, and Medicaid coverage varies by state but often includes similar services.
  • If diabetes prevents you from working, you may be able to receive Social Security Disability Insurance or Supplemental Security Income.

Who develops diabetes and why

Type 2 diabetes develops when your body cannot use insulin effectively — a condition called insulin resistance. Your pancreas makes insulin, a hormone that helps cells absorb sugar from your blood. Over time, if your cells resist insulin, your blood sugar stays high, and your pancreas works harder. Eventually, the pancreas cannot keep up, and diabetes develops. Risk factors include age over 45, family history, obesity, physical inactivity, and certain racial and ethnic backgrounds. African Americans, Hispanic Americans, Native Americans, Asian Americans, and Pacific Islanders develop Type 2 diabetes at higher rates than white Americans.

Type 1 diabetes is different. It is an autoimmune disease where the immune system attacks the cells in the pancreas that make insulin. It usually appears in childhood or young adulthood, though it can develop at any age. People with Type 1 diabetes must take insulin for life.

Gestational diabetes occurs during pregnancy and usually goes away after birth, but women who have had it face a higher risk of Type 2 diabetes later in life.

Recognizing diabetes symptoms and getting tested

Many people with Type 2 diabetes have no symptoms at all, which is why screening matters. When symptoms do appear, they include increased thirst, frequent urination, fatigue, blurred vision, and slow-healing cuts or sores. Type 1 diabetes symptoms often come on suddenly and include the same signs plus unexplained weight loss and fruity-smelling breath.

Testing is straightforward. Your doctor can order a fasting blood sugar test (you do not eat for 8 hours before the test), an A1C test (which measures your average blood sugar over three months), or an oral glucose tolerance test (you drink a sugary liquid and your blood is tested two hours later). A fasting blood sugar of 126 mg/dL or higher, an A1C of 6.5 percent or higher, or a glucose tolerance test result of 200 mg/dL or higher indicates diabetes. Your doctor may repeat the test to confirm.

The American Diabetes Association recommends screening starting at age 45 for all adults, and earlier for people with risk factors. If you have not been tested and you are over 45, ask your doctor to include it in your next checkup.

Managing diabetes to prevent complications

Once diagnosed, diabetes management involves four main areas: diet, physical activity, medication, and monitoring. Working with your doctor and a diabetes educator (often a nurse or registered dietitian) gives you a plan tailored to your situation.

Diet changes focus on controlling blood sugar. This usually means limiting refined carbohydrates and added sugars, eating more vegetables and whole grains, and watching portion sizes. You do not need to buy special "diabetic" foods — regular grocery store items work fine. A registered dietitian can help you plan meals that fit your preferences and budget.

Physical activity helps your body use insulin more effectively. Aim for at least 150 minutes of moderate activity per week — brisk walking, swimming, or cycling — plus strength training two or more days a week. Even small amounts of movement help, and your doctor can suggest what is safe for you.

Medication may include metformin (usually the first choice for Type 2 diabetes), other oral medications, or insulin injections. Type 1 diabetes always requires insulin. Your doctor adjusts medication based on your blood sugar readings and A1C results.

Monitoring means checking your blood sugar at home if your doctor recommends it, keeping a log, and having regular A1C tests (usually every three months if you are adjusting treatment, or twice a year if your diabetes is stable). These numbers tell you and your doctor whether your plan is working.

Medicare and Medicaid coverage for diabetes care

If you are 65 or older or have certain disabilities, Medicare Part B covers diabetes screening, testing supplies, and education. Specifically, Medicare pays for a fasting blood sugar test or glucose tolerance test once every three years for people at risk, and annually for people already diagnosed. It also covers blood sugar monitors, test strips, lancets, and other supplies. Insulin and most diabetes medications are covered under Medicare Part D (prescription drug coverage), though you pay a monthly premium and may have a deductible.

Medicaid coverage for diabetes varies by state. All states cover diabetes screening and testing, but coverage of medications, supplies, and education differs. Contact your state Medicaid office or visit your state's Medicaid website to learn what is covered where you live.

If you do not have Medicare or Medicaid, ask your doctor about patient information programs run by insulin and medication manufacturers. Many offer free or reduced-cost medications to people who meet income requirements. Your doctor's office or a social worker can help you find these programs.

Disability benefits if diabetes prevents work

Diabetes can may have access to you for Social Security Disability Insurance (SSDI) or Supplemental Security Income (SSI) if the disease prevents you from working. The Social Security Administration has a listing for diabetes that describes the medical evidence needed — usually an A1C above a certain level, evidence of complications like kidney disease or neuropathy, or documentation that you cannot follow a treatment plan due to another condition.

You do not have to wait for Social Security to make a decision. You can continue working while your case is being reviewed, and if you are approved, your benefits can go back to the date you filed. If you are denied, you can request reconsideration or appeal to an administrative law judge.

The process typically takes three to six months for an initial decision, though appeals can take longer. A Social Security representative or disability advocate can walk you through the process and help gather medical records.

Finding diabetes education and support

The American Diabetes Association runs a website (diabetes.org) with meal plans, exercise tips, and a tool to find local educators and support groups. Many hospitals and community health centers offer free or low-cost diabetes education classes. Your doctor can refer you, or you can call your local health department to ask what is available in your area.

If you are struggling to afford medication or supplies, the American Diabetes Association also maintains a list of patient information programs and can connect you with local resources. Some community health centers offer sliding-scale fees based on income.

Frequently Asked Questions

Can you reverse Type 2 diabetes?

Type 2 diabetes cannot be cured, but it can go into remission. This means your blood sugar levels return to normal without medication, usually through significant weight loss, diet changes, and exercise. Remission is not the same as a cure — blood sugar can rise again if you return to old habits. Work with your doctor to see if remission is possible for you.

What is the difference between Type 1 and Type 2 diabetes?

Type 1 is an autoimmune disease where the pancreas stops making insulin; it usually starts in childhood and requires insulin injections for life. Type 2 develops over time when the body cannot use insulin effectively; it is more common in adults and is often managed with diet, exercise, and oral medication, though some people eventually need insulin too.

How often should I check my blood sugar at home?

This depends on your type of diabetes and treatment. People taking insulin usually check multiple times a day. People taking oral medication or managing with diet alone may check less often or not at all. Your doctor will tell you how often to test and what your target range should be.

What happens if diabetes is not treated?

Untreated diabetes causes high blood sugar to damage blood vessels and nerves over months and years. This leads to heart attack, stroke, kidney failure requiring dialysis, blindness, nerve damage (neuropathy), and foot ulcers that may require amputation. These complications are preventable or delayed through early diagnosis and consistent management.

Does Medicare cover insulin pumps or continuous glucose monitors?

Yes, Medicare Part B covers insulin pumps and continuous glucose monitors (CGMs) for people with Type 1 diabetes and some people with Type 2 diabetes who use insulin. You will need a prescription from your doctor and may have a copay. Coverage rules change, so ask your doctor or call Medicare at 1-800-MEDICARE to confirm what is covered for your situation.