Hi my aunty suffers with dizzy spells and hair loss she also very obese and feels full all the time but she doesn't eat much. what could this be ?

Dizzy and not hungry: It's hard to say since there are so many things that can cause those symptoms. The dizziness may be from dehydration, irregular heart rhythm, carotid artery stenosis, strokes, high or low blood pressure, medication, etc. The hair loss may be from nutritional deficiency. Sounds weird, but a large % of overweight people are actually malnurished because they don't eat a healthy diet. Needs to see doc.