MCS-Aware MCS-Aware is the UK’s leading charity for environmental illness. We’re a source of support and information for people affected by multiple chemical sensitivity (MCS), food intolerance, and electro-hypersensitivity (EHS). We are a small charity making a big difference. We receive no statutory funding. By fundraising for us you are helping to make a real difference to people's lives. As well as supporting people with multiple sensitivities, we also help their carers, families and health professionals. MCS is a recognised illness in many countries and included in the international classification of diseases, but not yet in the UK. We aim to raise money to fund essential research into this illness and effective treatment. In its most severe form MCS is devastating and can leave people bedbound unable to tolerate food or medicines. By offering to fundraise or donate you are helping to change people's lives for the better.