You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Severe acute malnutrition (SAM) according to the WHO criteria is: and explain in detail?
Severe acute malnutrition (SAM) according to the WHO criteria is Weight for height less than median minus -3SD. Severe acute malnutrition (SAM) in children of ages 6 to 59 months is defined by the WHO as any of the following: Weight-for-length (or height) below -3SD of the WHO child growth standards. Presence of bipedal edema Mid-Upper arm circumference <11.5cm Ref: Ghai Essential Pediatrics 9th edition PGno: 97