Are there any issues we need to be aware of when using complementary and alternative medicine alongside western medicine?

Yes, we need to know that alternative medicine doesn't have any effective substance and has not yet been proven to work. For that reason one should usually relly only on western medicine and on complementary medicine which can also help but isn't necessarily helpful. 

Each gram of carbohydrates and proteins yield 4 calories / gram . the more the calories a food has the more energy it provide to you body.