Action FCS is the UK charity for people affected by Familial Chylomicronaemia Syndrome (FCS)

FCS is an ultra-rare genetic condition.  People with FCS can't eat fat as they don't have the enzyme which breaks it down, or what enzyme they have doesn't work properly.

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Event for patients, parents, and their carers

Join us at the wonderful Grand Hotel in Birmingham 27/28 February 2026.
– meet others from our FCS community,
– learn more about the condition,
– discuss strategies for managing it,
– hear about possibilities for the future.

Get support from your community

The Facts about FCS

Learn more about FCS and its diagnosis

Symptoms of FCS

Learn more about the symptoms of FCS

Medications for FCS

Learn how FCS is treated

Get involved

Recipes

Very Low Fat Moussaka

Aubergine with a ‘cheesy’ topping made with yeast flakes.

View recipe

Keep up to date with the latest news

In partnership with the rare disease community

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