Gut Bacteria Can Affect Your Mental Health

Gut bacteria is the ‘good bacteria’ in your stomach that helps regulate your bowel, aides in your digestion and keeps your microbes at healthy levels. If your gut bacteria is not working properly then you can suffer constipation, diarrhoea, flatulence, bloating, acid reflux and many more gastric conditions. If your gut is not working properly for a long period of time it can result in serious illnesses such as irritable bowel syndrome or even diverticulitis etc. Gut bacteria are necessary as they are the bacteria that keep your whole digestive system stable. They are the bacteria that antibiotics kills off so if you are sick a lot and need to take a lot of antibiotics then your gut bacteria will be deficient. This will result in diarrhoea. When you take antibiotics all the gut bacteria almost are destroyed. However your gut bacteria isn’t often thought of as being the probable cause of some mental health issue.


More recent research however shows that a species of bacteria called Gamma-aminobutyric acid or GABA, can affect someone’s mental health if there is a lack of this substance. If you are missing GABA you can be diagnosed as suffering from Irritable Bowel Syndrome (IBS) and fatigue but often it is overlooked that you could be also suffering from an inability to handle stress which can lead to anxiety, depression and even autism.GABA is a neurotransmitter that sends chemical messages to the brain and nervous system. It is also involved in regulating the communication between our brain cells. Research has shown that GABA can control anxiety, fear and affect our behaviour so when it is low we don’t feel as calm or relaxed or sleep too well. Northeastern University have discovered a specific bacteria in the gut (called Bacteroides fragilisKLE1758) that actually consumes GABA. Further studies need to be done in this area before information confuses the public but this new information is perhaps a good insight to explain the link between our gut and mental health issues.The good news is that GABA can be raised naturally with foods high in magnesium and vitamin B. It’s a good idea to take a natural multi-vitamin daily as none of us eat perfectly every day and a supplement will ensure you don’t become deficient in vitamins and minerals. Green tea and camomile are also good for increasing these bacteria levels. These vitamins and foods have shown in some tests to increase gut bacteria and in turn the person’s mental health abilities increase also. There are also many other natural ways to increase mental health, handle stress, anxiety and depression. Consult your natural therapist to find out what you need to do if you are suffering from any of these illnesses.


GABA therefore has the potential to be a good supplement if you are feeling a little off or have been suffering from bad anxiety, depression, or even PMS. Remember that often your mood can be affected by your hormone levels and whether your thyroid is operating properly. GABA however can increase your mood affecting your emotions and putting a positive slant on your perspective. It is hoped that further studies will reveal to what extent GABA can assist in mood stabilisation.

Role of 3 Types of ISTQB Advanced Certified Experts in a Testing Project

Roles of different experts like “Test Managers”, “Test Analysts” and “Technical Test Analysts” are quite inter-linked to some extent.

The “Test Manager” is obviously responsible for managing the entire testing process. However the roles of “Test Analysts” and “Technical Test Analysts” are equally important since they are instrumental in implementing the testing process. A close understanding among the senior persons like “Test Manager”, “Test Analysts” and “Technical Test Analysts” is extremely important for the success of the project.

Thus before analyzing the roles of the three experts, let us quickly go through the typical steps involved in a generic testing process.

Every test may consist of several individual activities, however there are five generic steps encompassing all such activities.

Let us briefly discuss these steps involved in the testing process.

1) Planning and Control: The “Test Manager” is responsible for following functions.

- Creation of a comprehensive Plan – documenting covering most of the information.
- Deciding the approach for testing.
- Planning of resources like equipment, software and personnel.
- Planning of training needs and hiring requirements.
- Setting the strategies.
- Creation of the schedule.
- Deciding the metrics required for controlling and monitoring the project.
- Risk management – involving identification of risks backed by their mitigation plans.

When the “Test Manager” controls a project, he is expected to control its risks as well. When a risk is identified, the “Test Manager” needs to tackle it using a suitable mitigation plan. He may chose to transfer the risk somewhere else or it may even be ignored also. In order to plan & effectively deal with risk items it is essential that most of the risks be identified at the beginning of the project.

Usually risk management comes under the responsibility of the “Test Manager”. Whereas “Test Analysts” and “Technical Test Analysts” make valuable contribution of providing information helpful in risk identification and making risk mitigation plans as part of the planning process.

2) Analysis and Design:
Involves deep consideration of the details of the project. Primarily it needs answering questions like;

- Taking decision on what to test.
- How much effort must be put in.
- What types of testing should be done.
- What type of tools will be required

During the analysis stage, we may need to review the requirements documents & probably decide to go in for performance testing. This would call for defining performance test cases, procuring suitable performance testing tools and organizing other resources.

During the analysis stage, we carry out the review of the test basis as well, i.e. the review of documents from which we decide as to what should we test – should we do static testing etc.

The primary objective of carrying out such reviews remains;

- To record different problems to ensure resolution as well as use it as a guideline for process improvement for the future.

- Collection of data needed to write the test specification. The specification document, if properly named, indicates what is going to be tested.

- Creation of design specification, including risk analysis tables that will guide a risk-based testing effort.

For an effective risk analysis contribution from different project stakeholders is extremely essential. The people who know the likely areas of failure can predict the technical risk. For example a developer knows that some of the excessively complicated areas of the code are vulnerable. Similarly testers are aware of particular portions of functionality that they find quite difficult to test well.

The “Test Manager” is responsible for coordinating and ensuring the creation of the design specification & quality risk analysis. The “Test analysts” are responsible to ensure that the testing concerns are adequately taken care of.

3) Implementation and Execution:

Based upon the design specification document, we create different test cases and test procedures.

Two type of test cases are created:

1) Logical test cases: These are the high-level descriptions which do not define the data for use in the tests.

2) Concrete test cases: These include the actual data, which is going to be used in the tests. Since spreadsheets containing actual data are referred by many test cases, hence they become concrete only when the instructions get joined with the data in actual practice.

“Test Procedure” is usually included in the test case itself. However according to IEEE-829 “Test Procedure” is a standalone document describing the method to execute a particular test case.

The “Test Procedure” document typically contain following information:

a) Test procedure specification identifier
b) Purpose describing list of applicable test cases.
c) Special requirements.
d) Procedure steps like – log, setup, start, proceed, measure, shutdown, restart, stop, wrap-up, contingencies etc.

While designing the test cases, possibility of automated execution is explored. If automation is considered viable, automation scripts are created at this stage of the project. Automation scripts are self-contained procedures usually known as scripts.

Next task is execution of the test cases may be manually or by automated means.

4) Evaluation of Exit Criteria and Reporting:

It is important to know when we should finish testing. Completion is decided based on meeting the exit criteria defined during the planning phase.

Usually it is a crucial Ship / Don’t Ship decision point, involving return of the testing information to the project team for the release decision.

“Test Summary Report” is the last standard document according to IEEE-829 that emerges out of this step. The “Test Summary Report” can be prepared periodically in the form of a progress report while concluding a particular level of testing – say for example after concluding the integration testing. Common practice of creating “Test Summary Report” is while concluding the testing effort.

The “Test Summary” document typically contain following information:

a) Test summary report identifier
b) Summary of evaluation of the test items
c) Variances
d) Assessment of being comprehensive
e) Summary of results
f) Evaluation of every item
g) Summary of activities
h) Approvals

5) Closure Activities:
The closure activities take place after shipping of the release. These activities usually receive less attention and thus remain under budgeted due to the pressure of the next project already in the queue.

If we want to quickly return to the closing project for any maintenance releases or patches etc, it is essential that the test manager remains firm on the correct & systematic operation of the closure activities.

During closure stage following activities are carried out;

- Carry out all types of wrap-up reporting.
- Carry out documentation & archiving of the environments.
- Archiving the documents and data.
- Clearing the decks for the project next in the pipeline.

Technical roles of “Test Analyst” and “Technical Test Analyst”:

In addition to certain specific activities that are handled exclusively by “Test Analyst” or “Technical Test Analyst”, there are certain common activities that are taken care of by either or both these persons.

Activities under the responsibility of “Test Analyst” and “Technical Test Analyst”:

1) To describe the desired features of systems-of-systems

2) To explain the factors influencing the testing of systems-of-systems

3) To describe the desired features of safety-critical systems

4) To describe the testing tasks those are particularly significant for testing safety-critical systems and provide examples of industry-specific standards.

5) To describe the desired features of real-time & embedded systems

6) To explain the criteria that influences the level of condition development.

7) To explain and provide examples of test oracles and method of using it in test documentation.

8) To describe the conditions that must be in place prior to the test execution, including the test-ware, defect-tracking system, configuration management system and test environment etc.

9) To find out if the test completion criteria have been fulfilled according to the desired norms.

Activities under the responsibility of “Test Analyst”

1) To analyze the requirement specification & breaking it down to a test specification according to IEEE-829 standard, focusing on functional & domain test cases as well as test procedures

2) To explain the stages in the software development lifecycle where functional testing shall be suitable

3) To understand the logic behind test analysis and design being static testing techniques that can be used to find out defects

4) To prioritize the process of test cases creation & subsequent execution according to the risk and create suitable test documentation

5) To identify the activities of risk based testing for domain testing

Activities under the responsibility of “Technical Test Analyst”

1) To explain different stages required in the software development lifecycle needing structure-based testing & nonfunctional testing.

2) To identify the activities of risk based testing for technical testing.