Eating a nutritious diet during pregnancy is linked to good brain development and a healthy birth weight, and can reduce the risk of many birth defects. A balanced diet will also reduce the risks of anemia, as well as other unpleasant pregnancy symptoms such as fatigue and morning sickness.
The answer is fats. You need protiens and water. Carbonhydrates are things like suger and starch. Carbonhydrates are your bodys main sorce of energy in a heathy balenced diet.
The best vitamin to recommend in the scenario given above is VITAMIN B3, WHICH IS ALSO KNOWN AS RIBOFLAVIN. John is suffering from ariboflavinosis, which is a deficiency disease that is due to inadequate intake of riboflavin and the disease is characterized by sores on the mouth.