I understand your concern towards your brother. He seems to be suffering from few depressive symptoms however the reason for that is unclear from the information provided by you. He would benefit from a detailed evaluation with a psychiatrist. His problems are manageable with appropriate treatment. Some counselling sessions along with medical help also might be useful for him. I would also be more than happy to help you with that if you are looking for online assistance. Discussions will be held confidential. You can directly consult with me through Practo as needed. Online chat consultation is available.