Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 1 year ago

No, you can not go against your parents for such reason. They might have some reason or concerns which related to your safety and they do not want you to risk your health. 
You need to keep the full respect for your parents even if they have a different opinion. You may talk to them very politely to understand the reasons of the opinion or to try to explain your view point. 
It is very good to help others specially in hard times but we can not obey Allah by committing the sin of hurting or disrespecting our parents.