Dad is in need of help!

My dad is 63 and has been fighting an unknown illness for months now. He has been to doctors and they have said it is something as simple as a diet, yet he is unable to keep down any food or water. He is without insurance, and my siblings and I can only do so much, so as a last resort I am trying to raise a bit of money for him so he can enjoy some baseball games a bit longer! I appreciate this so much everyone!