I have a cousin who is obese can you tell me more about this topic? 
It's a condition in which excess body fat has accumulated to the extent that it may have a negative effect on health.
Wow is there any way to help with obesity? 
Changes to diet and exercising are the best treatments.
What would be a good diet plan to help reduce body fat and obesity? 
Ketogenic diet could be a good plan to help reduce fat. It's a high-fat, adequate-protein,  and low-carbohydrate diet.
Oh okay I have heard of a keto diet before. What types of exercise would you recommend to help reduce obesity? 
Any kind of physical activity can help. Walking and swimming are good types of exercises for obese people