If you’re living with diabetes and hoping to start or grow your family, you may be wondering whether diabetes can affect your fertility.
The answer is yes—but it doesn’t mean pregnancy is out of reach.
Many women and men with diabetes have healthy pregnancies and healthy babies. The key is understanding how diabetes can affect fertility and taking steps to optimize your health before conception.
Whether you have type 1 diabetes, type 2 diabetes, or a history of gestational diabetes, good blood sugar management plays an important role in reproductive health.
Can Diabetes Affect Fertility?
Yes. Diabetes can affect fertility in both women and men, particularly when blood sugar levels remain consistently high over time.
Poorly controlled diabetes may affect:
- Hormone production
- Ovulation
- Sperm quality
- Sexual function
- Menstrual cycles
The encouraging news is that improving blood sugar management and overall health can improve fertility for many people.
How Diabetes Can Affect Women’s Fertility
1. Irregular Ovulation
Consistently high blood sugar levels can disrupt the hormones involved in ovulation.
Without regular ovulation, becoming pregnant may take longer.
Some women may notice:
- Irregular menstrual cycles
- Missed periods
- Difficulty predicting ovulation
2. Increased Risk of Polycystic Ovary Syndrome (PCOS)
Many women with insulin resistance and type 2 diabetes also have PCOS.
PCOS can cause:
- Irregular periods
- Difficulty ovulating
- Weight gain
- Acne
- Excess facial or body hair
Managing insulin resistance through healthy eating, physical activity, and prescribed medications can improve ovulation in many women.
3. Increased Risk of Pregnancy Complications
Poorly controlled diabetes before pregnancy increases the risk of complications, including:
- Miscarriage
- Birth defects
- High blood pressure during pregnancy
- Preterm birth
- Large birth weight babies
This is why planning a pregnancy and achieving good blood sugar control beforehand is so important.
How Diabetes Can Affect Men’s Fertility
Diabetes doesn’t only affect women.
Men with poorly controlled diabetes may experience:
- Reduced sperm quality
- Lower sperm movement (motility)
- Erectile dysfunction
- Problems with ejaculation
- Hormonal changes that affect fertility
Improving blood sugar management and addressing other health concerns can help improve reproductive health.
Why Blood Sugar Control Matters Before Pregnancy
The first few weeks of pregnancy are critical for your baby’s development, often before many women realize they are pregnant.
Achieving good blood sugar control before conception helps reduce the risk of complications for both mother and baby.
If you’re planning a pregnancy, speak with your healthcare provider before trying to conceive.
Nutrition Tips to Support Fertility
Healthy eating supports both blood sugar management and reproductive health.
Focus on meals that include:
Plenty of Vegetables
Examples include:
- Sukuma wiki
- Spinach
- Managu
- Terere
- Cabbage
- Broccoli
- Carrots
High-Fibre Carbohydrates
Choose:
- Oats
- Sweet potatoes
- Arrowroots (nduma)
- Brown rice
- Wholemeal ugali
- Wholemeal bread
- Beans
- Lentils
Lean Protein
Include:
- Eggs
- Fish
- Chicken
- Beans
- Green grams (ndengu)
- Plain yoghurt
Healthy Fats
Enjoy foods such as:
- Avocados
- Groundnuts
- Seeds
- Natural peanut butter
A balanced diet supports overall health and may help improve insulin sensitivity.
Maintaining a Healthy Weight
For women with overweight or obesity, even modest weight loss can improve insulin sensitivity and ovulation.
If you’re underweight, reaching a healthy weight may also improve fertility.
The goal is not rapid weight loss but sustainable lifestyle changes.
Stay Physically Active
Regular physical activity helps:
- Improve insulin sensitivity
- Support healthy blood sugar levels
- Reduce stress
- Maintain a healthy weight
Aim for at least 150 minutes of moderate-intensity activity each week, unless your healthcare provider advises otherwise.
Activities can include:
- Brisk walking
- Cycling
- Swimming
- Dancing
- Strength training
Don’t Forget Other Lifestyle Factors
Your fertility is influenced by more than blood sugar alone.
Other important habits include:
- Getting enough sleep
- Managing stress
- Avoiding smoking
- Limiting alcohol
- Attending regular medical reviews
- Taking medications exactly as prescribed
Preparing for Pregnancy
If you’re planning to become pregnant, discuss your plans with your healthcare provider before stopping contraception.
Your care team may recommend:
| Before Pregnancy | Why It Matters |
|---|---|
| Review your diabetes management plan | Helps achieve stable blood sugar levels before conception. |
| Check your HbA1c | Provides an overview of blood sugar control over the past 2–3 months. |
| Review your medications | Some diabetes or blood pressure medications may need to be changed before pregnancy. |
| Start folic acid supplementation | Helps reduce the risk of neural tube defects when started before conception, as advised by your healthcare provider. |
| Screen for diabetes-related complications | Eye, kidney, and blood pressure checks are important before pregnancy. |
Common Myths About Diabetes and Fertility
| Myth | Fact |
|---|---|
| Women with diabetes cannot get pregnant. | Many women with diabetes conceive naturally and have healthy pregnancies. |
| Diabetes always causes infertility. | Diabetes may make conception more difficult for some people, but it does not automatically cause infertility. |
| Only women need to prepare for pregnancy. | Men’s health, including blood sugar control, can also affect fertility. |
| If I feel well, my blood sugar must be well controlled. | Blood sugar can be elevated without causing noticeable symptoms, so regular monitoring is important. |
When Should You Seek Medical Advice?
Speak to your healthcare provider if:
- You’ve been trying to conceive for 12 months without success (or after 6 months if you’re 35 years or older).
- Your menstrual cycles are irregular.
- Your blood sugar is consistently above your target range.
- You have concerns about your medications.
- You have a history of recurrent miscarriage.
- You have diabetes complications such as kidney disease or eye disease.
Early medical advice can help identify and address potential barriers to conception.
Remember
Having diabetes does not mean you cannot have a healthy pregnancy. Many people living with diabetes go on to conceive and deliver healthy babies.
The most important step is planning ahead. Good blood sugar management, balanced nutrition, regular physical activity, and routine medical care can improve fertility and reduce pregnancy-related risks.
If you’re thinking about starting a family, don’t wait until you’re pregnant to focus on your health. Preparing your body before conception gives both you and your future baby the best possible start.
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