Total Antioxidant Status (TAS)

What it is

Total Antioxidant Status (TAS) is a blood test that measures the overall ability of your blood to fight off harmful molecules called free radicals. Think of it like a general health check for your body's defence system against oxidative stress.

Our bodies are constantly exposed to things that can create free radicals, both from inside (like normal metabolism) and outside (like pollution, smoking, or UV rays). Free radicals are unstable molecules that can damage cells, proteins, and DNA. This damage is known as oxidative stress, and over time, it can contribute to various health problems.

Antioxidants are substances that neutralise these free radicals, preventing them from causing harm. Your body produces some antioxidants, and you also get them from your diet, found in fruits, vegetables, nuts, and seeds. The TAS test gives a broad picture of how well your body's combined antioxidant defences are working. It doesn't measure individual antioxidants like Vitamin C or Vitamin E specifically, but rather their collective power.

Why it matters

A healthy level of antioxidant activity is important for protecting your cells from damage. When the balance tips towards too many free radicals and not enough antioxidants, oxidative stress can occur. This imbalance has been linked to a number of long-term health concerns.

For example, chronic oxidative stress is thought to play a role in the ageing process and may contribute to the development of conditions such as heart disease, certain types of cancer, and neurodegenerative diseases like Alzheimer's. By assessing your TAS, healthcare professionals can gain insight into your body's resilience against these damaging processes. A lower TAS might suggest that your body's defences are not as strong as they could be, prompting a closer look at potential contributing factors and strategies to improve it.

What can cause it to be high or low

Several factors can influence your Total Antioxidant Status.

Factors that may be associated with a lower TAS:

• Dietary deficiencies: Not consuming enough antioxidant-rich foods, such as fruits, vegetables, and whole grains, can lead to lower levels.
• Certain medical conditions: Some chronic illnesses, particularly those involving inflammation or significant metabolic stress, can increase the demand for antioxidants, potentially lowering the overall status.
• Lifestyle habits: Smoking and excessive alcohol consumption are known to increase oxidative stress, which can deplete antioxidant levels.
• Ageing: As we age, our body's natural antioxidant production may decrease, and our exposure to oxidative damage can increase.
• Certain medications: Some medications can affect antioxidant levels, either by increasing oxidative stress or by interfering with antioxidant pathways.

Factors that may be associated with a higher TAS:

• A diet rich in antioxidants: Consuming a wide variety of colourful fruits, vegetables, nuts, seeds, and whole grains can help boost your antioxidant defences.
• Good overall health: A well-functioning body with efficient metabolic processes and a strong immune system can often maintain a healthy antioxidant status.
• Supplement use: While not always necessary, some antioxidant supplements might contribute to higher TAS levels, though it's important to discuss this with a healthcare professional.

It's important to remember that TAS is just one piece of the puzzle when assessing your overall health.

Lifestyle factors that may help

Making certain lifestyle choices can be beneficial for supporting your body's antioxidant capacity. Discussing these with your GP can help you understand what might be most suitable for you.

• Dietary choices: Focusing on a diet abundant in colourful fruits and vegetables is a cornerstone. Think berries, leafy greens, citrus fruits, and a variety of vegetables. Including nuts, seeds, and whole grains can also contribute to a robust antioxidant intake.
• Hydration: Staying well-hydrated is fundamental for overall bodily functions, including those related to managing oxidative stress.
• Limiting alcohol: If you consume alcohol, considering moderation can be helpful.
• Smoking cessation: If you smoke, stopping is one of the most impactful steps you can take for your health, significantly reducing the burden of oxidative stress.
• Stress management: Chronic stress can contribute to oxidative damage. Exploring techniques like mindfulness, meditation, or gentle exercise might be beneficial.
• Regular physical activity: Engaging in regular, moderate exercise is generally associated with improved antioxidant defence mechanisms.

Questions to discuss with your GP

If you have had a Total Antioxidant Status test, or are considering one, here are some questions you might find helpful to discuss with your GP:

• What does my specific TAS result mean in the context of my overall health?
• Are there any particular dietary changes you would recommend to support my antioxidant levels?
• Could any of my current medications or health conditions be affecting my TAS?
• What are the potential benefits and risks of considering antioxidant supplements?
• Are there any other tests that might provide further insight into my oxidative stress levels?
• What are the most effective lifestyle strategies for me to improve my body's antioxidant defences?