An article written by Dr Edward Leatham, Consultant Cardiologist     © 2024 E.Leatham

Why glucose spikes matter

Glucose spikes refer to rapid rises in blood sugar levels following meals. While occasional increases are normal, frequent or exaggerated spikes are increasingly recognised as harmful to long-term cardiovascular and metabolic health.

Repeated glucose surges contribute to:

• Insulin resistance
• Chronic low-grade inflammation
• Oxidative stress within blood vessels
• Weight gain and increased visceral fat
• Progression towards type 2 diabetes

From a cardiovascular perspective, this is important because abnormal glucose regulation accelerates atherosclerosis and increases the risk of coronary heart disease, even before diabetes is diagnosed.

The goal is not to eliminate glucose rises completely, but to reduce their size and frequency, creating more stable metabolic control over time.

1. Food order: the simplest starting point

One of the easiest and most effective techniques is changing the order in which foods are eaten.

Evidence suggests that eating:

1. Vegetables or salad first
2. Protein and healthy fats second
3. Carbohydrates last

can significantly blunt the post-meal glucose rise. Fibre, fat, and protein slow gastric emptying and reduce the speed at which glucose enters the bloodstream.

This simple behavioural change often improves glucose control without altering total calorie intake.

2. Choose slower carbohydrates

Not all carbohydrates behave the same way. Highly refined carbohydrates are absorbed rapidly, producing sharper spikes, while minimally processed sources lead to a slower and more gradual rise.

Helpful strategies include:

• Choosing whole grains over refined flour
• Prioritising legumes and pulses
• Including fibre-rich vegetables
• Avoiding sugary drinks and highly processed snacks

Combining carbohydrates with protein or healthy fats further reduces their glycaemic impact.

3. Move after meals

Light activity after eating can have a powerful effect on glucose regulation. Muscle contraction allows glucose uptake independent of insulin, helping to clear glucose from the bloodstream more efficiently.

Even modest movement can help:

• A 10–15 minute walk after meals
• Gentle cycling
• Climbing stairs
• Light household activity

This is often one of the most underestimated tools for improving metabolic stability.

4. Build skeletal muscle strength

A key but often overlooked factor in glucose control is skeletal muscle health.

Skeletal muscle is the body’s largest site of glucose disposal. The more metabolically active muscle tissue a person has, the more effectively glucose can be cleared from circulation. Reduced muscle mass is strongly linked to insulin resistance, higher glucose variability, and increased cardiovascular risk.

Maintaining or increasing muscle strength therefore represents a core strategy for long-term metabolic and cardiovascular prevention.

5. Ensure sufficient daily protein intake

Adequate protein intake supports muscle maintenance and recovery and helps stabilise blood glucose levels by slowing digestion and increasing satiety.

Practical approaches include:

• Including protein at every meal
• Distributing protein evenly throughout the day
• Choosing high-quality sources such as fish, eggs, dairy, poultry, legumes, and plant proteins
• Avoiding ‘naked carbs’ – carbohydrate-only meals, especially at breakfast

Many adults — particularly from mid-life onwards — unintentionally under consume protein, which can contribute to loss of muscle mass and worsening metabolic health.

6. Resistance training: a metabolic therapy

Resistance or strength training is one of the most effective interventions for reducing glucose spikes and improving insulin sensitivity.

Unlike aerobic exercise alone, resistance training:

• Increases muscle mass
• Improves glucose uptake capacity
• Reduces insulin resistance
• Improves long-term metabolic flexibility

Examples include:

• Body-weight exercises
• Resistance bands
• Free weights
• Machine-based strength training

Ideally, strength-focused exercise should be performed two to three times per week alongside regular aerobic activity.

From a cardiology perspective, improving muscle strength is increasingly recognised as a powerful preventive strategy that complements traditional risk-factor management.

7. Prioritise sleep and stress management

Poor sleep and chronic stress raise cortisol levels, which can increase glucose output from the liver and worsen insulin resistance.

Helpful habits include:

• Consistent sleep timing
• Limiting late-evening meals
• Reducing alcohol intake before bedtime
• Incorporating relaxation or mindfulness techniques

Metabolic health is deeply connected to sleep quality and nervous system balance.

8. Individualise the approach

Not all patients experience glucose spikes in the same way. Factors such as age, body composition, fitness level, genetics, and underlying insulin sensitivity all influence glucose responses.

In clinical practice, personalised strategies often include:

• Tailored dietary advice
• Exercise prescriptions focusing on muscle strength
• Weight management when appropriate
• Monitoring risk factors such as blood pressure, lipids, and inflammation

For some individuals, continuous glucose monitoring can provide additional insight into how specific foods and behaviours affect their metabolic responses.

The broader cardiovascular perspective

Glucose control is not just about diabetes prevention. Repeated glucose variability contributes directly to vascular inflammation and endothelial dysfunction — key drivers of atherosclerosis.

Reducing glucose spikes therefore supports:

• Improved metabolic health
• Lower cardiovascular risk
• Better long-term vascular function
• Healthier ageing

Importantly, strategies that improve glucose stability — particularly resistance training and muscle maintenance — also improve overall functional capacity and resilience.

Final thoughts

Managing glucose spikes does not require extreme diets or complicated interventions. Small but consistent changes can have a powerful cumulative effect.

Key principles include:

• Eating protein and fibre before carbohydrates
• Choosing slower-digesting foods
• Moving after meals
• Building and maintaining skeletal muscle
• Ensuring adequate daily protein intake
• Incorporating regular resistance training

Together, these approaches help stabilise glucose levels, improve metabolic health, and reduce long-term cardiovascular risk.

Further reading

1. Gene mutation evolved to cope with modern high-sugar diets
2. The n-of-1 clinical trial: the ultimate strategy for individualizing medicine?
3. https://pan.olsztyn.pl/2023/04/human-genes-cant-keep-up-with-adaptation-to-modern-diet/
4. https://drindra.co.uk/its-all-a-balancing-act-the-art-of-achieving-a-steady-blood-glucose/
5. https://www.aware.app/magazine/glucose-strategies-how-to-flatten-your-glucose-curve-with-10-tips
6. Diabetes: is it time to flatten the curve? 2021

7. 14 Easy Ways to Lower Blood Sugar Levels Naturally

8. The Harvard Eating plate 
9. Glucose revolution