Health & Lifestyle

10 Simple Things You Can Do to Prevent Type 2 Diabetes

Diagnosis prediabetes? - Tips for people with prediabetes and those at high risk of developing type 2 diabetes. Learn how to prevent it here!

Numerous factors have been identified as contributing to type 2 diabetes over the years; for those at-risk individuals, perhaps with prediabetes, if action is taken to mitigate/offset these contributing factors, early enough, then you can prevent type 2 diabetes, or, at the very least, reduce the level of your risk of getting it. 

What do we mean by early enough? Well, it would be in a period of prediabetes where blood glucose levels are above normal, indicating a problem. Consider over a third of people with untreated prediabetes develop type 2 diabetes within four years, so screening is a vital part of prevention.

What are the contributing factors to Diabetes?

Image source:

There are many contributing factors to diabetes; perhaps the biggest single contributor is if you are overweight or have a poor diet, other factors would include inadequate physical activity, high blood pressure, or even your age. The more contributing factors an individual has, the greater the risk, and then if there is also family history, risks increase further. The good news is that most of these contributing factors can be mitigated, reducing the overall risk. 

LEARN ABOUT YOUR DIABETES MELLITUS RISKS -  this is adapted/based on American Diabetes Association’s Diabetes Risk Test.

Tips to Prevent Type 2 Diabetes

There are many aspects to a healthy lifestyle; what constitutes healthy varies from person to person, depending on genetics. Despite this, there are some things that can be done that are effective for everyone. Below is a list of our favorites.

1. Have an Early Dinner

A new research study shows that eating dinner several hours before bedtime can reduce the risk of developing type 2 diabetes.

A team of researchers from Massachusetts General Hospital (MGH), Brigham and Women's Hospital (BWH), and the University of Murcia in Spain conducted a clinical trial to understand the links between blood sugar and melatonin production. The pineal gland naturally secretes this hormone in the brain to regulate the day/night cycle. 

The timing of meals during the day plays an important role in glycemic control, including, which should be spaced out timewise, and, if possible, always eaten at a fixed time. 

The results show that participants' blood melatonin levels were 3.5 times higher after a late dinner. A late dinner decreases insulin levels and, consequently, increases blood sugar. The effect of late eating impairing glucose tolerance was stronger in the MTNR1B G-allele carriers than in noncarriers. 

The study's authors concluded that everyone should refrain from eating for at least two hours before bedtime. In addition, "Information about the melatonin receptor variant genotype can also help develop personalized behavioral recommendations," says senior author Richa Saxena, Ph.D., a principal investigator at the Center for Genomic Medicine at MGH.

2. Diabetes and Breakfast timing

In 2018 an American study analyzed data on the health and dietary intake of 10,574 US adults who enrolled in the National Health and Nutrition Examination Survey. It was found that having breakfast earlier rather than later (before 8:30 in the morning) can reduce insulin resistance, thereby reducing the risk of developing type 2 diabetes.  

They found that insulin resistance was higher among those who ate over a shorter duration across the day (time-restricted eating) — and lower in all groups that began eating before 8.30 in the morning.

3. Diabetes and Fasting

Before 2018, the evidence for and against dietary fasting as a method for managing Diabetes was contradictory; on the one hand, "Intermittent fasting can improve sleep and a person's quality of life as well as reduce the risk of obesity, diabetes, and heart disease”, as Satchidananda Panda put it, a researcher from the Salk Institute for Biological Studies in La Jolla, Calif. when speaking of her research on intermittent fasting.

On the other hand, there was concern that fasting might do more harm than good for (type 2) diabetic individuals because the fluctuation in blood glucose levels due to intermittent fasting might increase the production of free radicals. Since then, science has tended towards supporting fasting, specifically because it reduces the oxidation of LDL Cholesterol; however, in another study of time-restricted feeding, both LDL and HDL cholesterol increased in the morning, which is attributed to longer fasting. Much seems to depend on the duration of the fasting, where the optimal time would be at around 12-13 hours or more; however, while there is still a lack of evidence, it does seem that during fasting the metabolism does seem to switch to fat oxidation, potentially benefiting individuals with type 2 diabetes.

Also, it’s important to note that diabetic people should always consult their physicians prior to starting intermittent fasting because they might need to adjust their insulin doses or other medications to avoid hypoglycemia or even hyperglycemia.

4. What to Eat to Prevent Diabetes

A low Glycemic index diet has been shown to delay or even prevent diabetes by preventing dangerous spikes in blood glucose levels. Here it's worth noting that a precisely crafted diabetic meal plan does not differ from a healthy balanced meal plan which focuses on achieving a healthy weight with a balanced - nutritionally dense diet like the Mediterranean diet. The Glycemic index and the calculation of Glycemic load are helpful tools for those seeking to adapt to such a diet.

Balance is key and can be achieved by following simple food swaps/exchanges:

  1. Consume non-starchy vegetables.
  2. Minimize consumption of added sugars and refined grains.
  3. Choose whole foods vs. highly processed foods.
  4. Replace sugar-sweetened beverages with water. 

Source: 2019 ADA Consensus Report by Todays Dietitian

Food Tracking is important because while a GI diet does help control diabetes, it can also increase the amount of fat and sugar alternatives in the diet, the tolerance of which is unpredictable due to the variability of gut fauna. By keeping a food diary, when problems arise, foods or ingredients can be identified more easily and excluded from the diet if needed. The DiabTrend app (for android or iPhone) assists with the tracking of food and displays the Glycemic index of many foods, so it's the perfect app to keep track of your low GI diet.

5. Enjoy Spices with Food

There is evidence that consuming various spices during a meal reduces blood glucose levels below what they would otherwise have been in prediabetes and type 2 diabetes. Although the mechanism is still not 100% clear, it could be due to either improving beta-cell functions or insulin sensitization.

Specifically, Cinnamon and Turmeric have the most scientific evidence of significantly reducing blood glucose levels, thus supporting their use for prediabetes and type 2 diabetes. However, many herbs and spices could also show a similar effect; although the studies are promising, the study designs are often inadequate to determine exactly what effect these herbs have on our bodies. That being said, it's still a good idea to use more herbs and spices in your diet; just be careful with the different dietary supplements. 

6. What to Drink to Prevent Type 2 Diabetes

There are numerous studies that show that caffeine impacts blood glucose levels; however, its effects vary greatly from person to person, either increasing or decreasing blood sugar levels, often depending on when you consume it in relation to meals. Some experimentation is needed to determine what works for you.

Note: for some people, it does not affect blood glucose.  

Plain old water is good for diabetics because it has a neutral effect on blood glucose levels, whereas low-fat milk contains many other nutrients such as protein and calcium, making it a good option. That being said, it still has simple carbohydrates that should be counted towards your daily allowance.  

Note: drinking milk could result in a blood sugar spike for some people, especially in the morning, even though it has a low Glycemic index.

7. Food Tracking with a Food Diary to Prevent Type 2 Diabetes

The information above about the impact of specific foods and drinks on blood sugar levels is an important example of why dietary tracking is essential for everyone, not just for diabetics. In the case of prediabetes or type 2 diabetes, you need to test what works well for your particular case to determine what you should consume and when to do so, i.e. before or after eating, morning or evening, etc. A smartphone application such as DiabTrend is a great tool for managing dietary intake.

8. Exercise Directly After Eating to prevent type 2 Diabetes

The tradition of walking after eating is an age-old practice maintained because we feel better when we do so, especially if a meal makes you feel sleepy afterward.  

In terms of evidence for this benefit, one study published by the journal Frontiers in Endocrinology looked at this specifically and found that because exercise decreases blood sugar levels, exercising after eating depletes blood sugar that otherwise would cause an increase in blood sugar levels.  

Exactly when you should exercise depends on the type of carbohydrates (different carbohydrates are digested at different rates) in the food. Still, ultimately it's about how you feel, but the study suggests around 30 minutes after eating.  

In terms of the type of exercise, swimming and marathon running are probably a bad idea along with any extreme exercise routine.  We suggest perhaps cycling or walking.  

As an additional benefit of exercise, less blood sugar results in less sugar converted into glycogen or fat in the liver.

9. Take an Ice Bath After Eating to Prevent Type 2 Diabetes!

In type 2 diabetic patients a cold exposure (10-15°C) is suggested to improve glycemic control, through activating brown adipose tissue and also improving insulin sensitivity. However, people with diabetes need to be careful with ice baths as they are associated with reduced ability to maintain a core temperature in extreme temperature changes. 

The next suggestion also works well with a wellness session.

10. Relax, Reduce Stress to Prevent Diabetes.

Avoid hearing any bad news and shocks after eating! Adrenaline increases blood glucose levels, which, when combined with the higher blood glucose levels after a meal, can cause a dangerous spike and potentially cause damage to your body.

Wrapping Up

These tips and tricks mentioned in the article have one aim in mind: to keep your blood sugar levels and body weight in a healthy range. And the best way to do this is to have a healthy balanced diet and an active lifestyle. It's tough breaking old habits, there are no quick fixes, but some simple things can be done, added to your diet and lifestyle that will help, such as those listed above.

Do you have any other great tips? Share your experience!


  1. The Effects of Time Restricted Feeding on Overweight, Older Adults: A Pilot Study
  2. Body temperature regulation in diabetes
  3. Exercise after You Eat: Hitting the Postprandial Glucose Target
  4. Caffeine Impairs Glucose Metabolism inType 2 Diabetes
  5. Curcumin Extract for Prevention of Type 2 Diabetes
  6. Efficacy and safety of cinnamon in type 2 diabetes mellitus and pre-diabetes patients: A meta-analysis and meta-regression
  7. Diabetes Management & Nutrition Guide: ADA’s 2019 Nutrition Therapy Consensus Report
  8. Meal Timing May Impact Metabolic Risk Factors
  9. Intermittent Fasting and the Possible Benefits in Obesity, Diabetes, and Multiple Sclerosis
  10. Diabetes mellitus and oxidative stress—A concise review
  11. Oxidative stress in type 2 diabetes: the role of fasting andpostprandial glycaemia
  12. Clinical study finds eating within a 10-hour window may help stave off diabetes, heart disease
  13. Meal Timing May Impact Metabolic Risk Factors
  14. Interplay of Dinner Timing and MTNR1B Type 2 Diabetes Risk Variant on Glucose Tolerance and Insulin Secretion
  15. Randomized controlled trial offers insights on how the timing of dinner and genetics affect individuals’ blood sugar control
  16. From Pre-Diabetes to Diabetes: Diagnosis, Treatments and Translational Research

Richard Johnson
Reading time: 
April 18, 2022

Handle your diabetes smartly!

Start DiabTrend

Other posts about diabetes