week 10

• Sodium maintains extracellular volume; involved in active transport of molecules across the cell membrane
• Potassium maintains intracellular fluid volume and transmembrane electrochemical gradients
• Phosphate is an acid base balance; energy store; activates proteins
• Zinc is required for enzyme activity; immune function; protein synthesis; wound healing; DNA synthesis
• Copper facilitates iron metabolism
• Cobalt is an essential component of vitamin B12
• Anorexia Nervosa – restricting subtype = severe food restrictions, fear of gaining weight, disturbed body image, underweight
• Anorexia Nervosa – binge/purging subtype = severe food restrictions, fear of gaining weight, disturbed body image, underweight, binge eating and purging behaviours
• Atypical Anorexia nervosa = severe food restrictions, fear of gaining weight, disturbed body image, normal weight range
• Purging disorder involves recurrent purging in the absence of binging to influence weight
• Night eating syndrome involves recurrent episodes of night eating
• Orthorexia involves strong anxiety about food choices meeting high purity, elimination/avoidance of specific foods of poor quality
• Bulimia Nervosa involves frequent episodes of binge eating with compensatory behaviours, weight fluctuations
• Binge eating disorders involve frequent episodes of binging, feelings of guilt and shame, weight gain
• Vitamin A is important for reproduction; vision; immune function
• Vitamin E is an antioxidant; protects cell walls
• Vitamin B5 (pantothenic acid) is involved in the synthesis of coenzyme A and is an acyl carrier protein
• Vitamin C (ascorbic acid) is involved in biosynthesis of collagen, carnitine, neurotransmitters; protein metabolism; antioxidant; immune function; improves non-haem iron absorption. WATER SOLUBLE.
• Vitamin B1 (thiamine) enables carbohydrate metabolism; nerve and muscle function. WATER SOLUBLE.
• Vitamin B6 (pyridoxine) is a coenzyme for amino acid, lipid and carbohydrate metabolism; biosynthesis of neurotransmitters; immune function; haemoglobin formation; gluconeogenesis; glycogenolysis. WATER SOLUBLE.
• During starvation, glucagon stimulates glycogenolysis, ketogenesis, lipolysis, glycolysis and gluconeogenesis to provide energy sources for the body's tissues
• During rest, muscles prefer fatty acids as an energy source