Why do doctors recommend refined oil instead of animal fats like desi ghee?

Solve the crossword puzzle with the help of the clues given.

Down

1. A condition caused due to eating too much of fat-rich foods 
2. A disease caused due to lack of vitamin D
3. A kind of protective nutrients 
5. A food rich in carbohydrates
6. A rich source of fats
8. A nutrient needed by our body in traces
10. A disease caused due to the deficiency of iodine in our diet

Across

2. Also known as dietary fibres
4. The main energy-giving nutrients
7. A mineral required for healthy bones and teeth
9. A rich source of proteins
11. A nutrient needed for the growth and repair of our body
12. Oily nutrients