酮体是脂肪分解的产物，饥饿时可为脑组织提供能量来源。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30921' and id < 2488495 and id<>'2488495' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30921' and id > 2488495 and id<>'2488495' order by id asc limit 5