CHO 6 pp - Carbohydrates Overview Carbohydrate Absorption...

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1 Carbohydrates Overview Carbohydrate Digestion Carbohydrate Absorption • Active transport by SGLT1 Fructose • Facilitative transport by GLUT5 Carbohydrate Metabolism Dietary Carbohydrate Essential! Minimum Dietary Requirement • Minimum amount carbohydrate required to avoid ketosis – ~50 grams/day • Glucose is essential energy source for brain, red blood cells, renal medulla
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2 Daily amount used ~180 grams/day –~130 g/day can be produced from Dietary Carbohydrate Essential! Minimum Dietary Requirement non-carbohydrate sources (gluconeogenesis) • 180-130 g/day = 50 gram minimum dietary requirement Mininimum CHO Requirement • Low-carbohydrate diet w/ < 50 gm/day – CHO deficient side effects •Ke tos is • Dehydration • Weakness • Muscle wasting • CNS effects • Kidney stress Carbohydrate Consumption • Most individuals eat considerably > 100 g/day –2000 kcal/day; 40 % carb; 800 cal
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CHO 6 pp - Carbohydrates Overview Carbohydrate Absorption...

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