Genetic counselling explained

What genetic counselling is

Genetic counselling is a process, usually one or more conversations, that helps people understand conditions that can be passed down through families. It is provided by genetic counsellors and clinical geneticists, who are trained both in genetics and in supporting people through what can be sensitive and emotional decisions. Their job is to explain how a condition is inherited, what the chances are of it affecting you or your children, and what choices are available, including whether or not to have a genetic test. Importantly, genetic counselling is non-directive: the professional does not tell you what to decide, but gives you balanced information and support so you can make the choice that fits your own values and situation. It is as much about emotional support as about facts and figures.

Who it can help

People are referred for genetic counselling for many reasons. Someone may have a strong family history of a condition such as certain cancers, heart conditions or a neurological illness, and want to understand their own risk. Couples planning a family may seek advice if a genetic condition runs in either family, or if they are known carriers. Parents may be referred when a child has a condition that might be genetic, and adults may come to discuss predictive testing for a condition that runs in the family. Genetic counselling also supports people during pregnancy when a screening test raises questions. In short, it helps anyone facing questions or decisions about an inherited condition, whether that is understanding risk, considering testing, or coping with a diagnosis.

What happens at an appointment

A genetic counselling appointment usually starts with a conversation about why you have come and what you already know. The counsellor will often ask about your family's health across several generations to draw a family tree, which helps work out how a condition might be inherited and what the risks could be. They will explain the condition in plain language, discuss whether a genetic test is available and what it could and could not tell you, and talk through the possible results and what each might mean for you and your relatives. Crucially, they will also explore how you feel about it all and what matters to you. You do not have to decide anything on the spot; you can take time, ask questions, and come back. Appointments are confidential and unhurried.

Genetic testing and its implications

Genetic testing is often part of the picture, but it is always your choice, and counselling helps you weigh it up. A test might confirm a diagnosis, show whether you carry a gene that could be passed to children, or predict whether you are likely to develop a condition later. Results can bring reassurance, but they can also raise difficult feelings or affect relatives who share your genes, so the implications are talked through beforehand. The counsellor will explain what a positive, negative or uncertain result would mean, how it might influence screening or prevention, and who else in the family it could be relevant to. Some people decide testing is right for them; others prefer not to know, and both choices are respected. The aim is an informed, unpressured decision.

How to access it and what to expect afterwards

In the UK, genetic counselling is available through NHS regional genetics services, usually after a referral from a GP or hospital specialist when there is a relevant family history or clinical need. You do not need to have symptoms to be referred. After an appointment, you may be offered testing, further appointments, or simply written information summarising what was discussed. If testing is done, the results are explained to you carefully, with support to understand what they mean and what happens next, including any screening, prevention or onward referral. The service can also help you share relevant information with family members who may wish to seek advice themselves. Throughout, the emphasis is on support: you are not left to make sense of complex information alone.