Which Foods and Activities to Avoid Before ADHD Testing? 

When getting ready for an ADHD test, there are a few easy steps you can take to help make sure the results are as accurate as possible. What you eat and how you manage your activities leading up to the test can influence your performance, especially since factors like diet before testing and screen time restrictions can affect concentration, impulsivity, and overall focus. Knowing which foods to avoid before ADHD testing is an essential part of preparing for a successful assessment. 

To make the most of your ADHD testing, it is best to avoid certain foods and activities that could affect your thinking and concentration. For example, caffeine and sugar can lead to sudden energy highs and crashes, which may affect your ability to focus during the test. Likewise, activities like excessive screen time can lead to mental fatigue, which may affect your attention and focus during the test. 

Foods and Activities to Avoid Before ADHD Testing 

Here are some tips on what to avoid: 

Avoid High-Sugar Foods and Drinks:  

Consuming sugary foods or drinks (like candy, sodas, or energy drinks) can lead to a quick energy boost, followed by a sugar crash. This fluctuation can make it difficult to focus and can cause irritability, which can negatively impact your test results. It is better to choose balanced meals and snacks that give you steady, lasting energy  

Limit Caffeine Intake:  

Caffeine, found in coffee, tea, and some soft drinks, is a stimulant that can temporarily boost focus for some people. However, it can also increase feelings of restlessness or anxiety and lead to a crash once the effects wear off. For a more stable focus during your test, try to avoid caffeine or reduce your intake in the 24 hours leading up to the assessment. 

Screen Time Restrictions:  

Excessive screen time especially from phones, computers, or TVs can lead to mental fatigue and reduced attention span. The constant stimulation from screens may make it harder to stay focused during the test. It is recommended to limit screen time in the hours before your ADHD evaluation to give your brain a chance to rest and reset. 

Heavy or Fatty Meals:  

Large or fatty meals can make you feel sluggish or tired, making it harder to concentrate during the test. Choose light, balanced meals with protein, whole grains, and healthy fats to maintain steady energy levels. 

Skip High-Salt Snacks:  

Foods that are high in salt, such as processed snacks and fast food, can lead to dehydration and affect cognitive function. Stick to hydrating foods like fruits and vegetables and drink plenty of water before the test. 

By paying attention to your diet before testing and adjusting your habits, you can ensure your brain is functioning at its best for the ADHD assessment. Simple changes in what you eat and do in the hours leading up to the test can help give a clearer picture of your cognitive abilities, allowing for a more accurate diagnosis. For personal consultations on the risks of ADHD testing, visit providers like ADHD Certify.

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Cognitive and neuropsychological testing.