Nutrition and Hydration – Spotting the signs of poor nutrition. Obvious weight loss. • Losing weight unintentionally. ... • Diarrhoea, nausea, vomiting or. ... • Loss of appetite: eating less than usual or. ... • Drinking less than usual. ... • Changes in mood: becoming depressed and. ... • Collar bone sticks out. ... • Tooth loss and decay. More items...