Millions of people think they\u2019ve tried everything to lose weight, from more cardio and fewer carbs to earlier bedtimes.<\/p>\n
But for many, they still hit a weight-loss wall at no fault of their own and for reasons beyond their control: a slow metabolism.\u00a0<\/p>\n
A slow metabolism<\/a>\u00a0typically manifests itself as low energy, weight gain and stalled weight loss<\/a>, but it can also impact blood sugar, circulation, muscle function and several other bodily functions that can play a role in weight loss or gain.\u00a0<\/p>\n \u2018When someone says they have a \u201cslow metabolism,\u201d it\u2019s usually not a diagnosis. It\u2019s a feeling. And most of the time, it\u2019s a shorthand for \u201cI don\u2019t feel like my body is working the way it used to,\u201d\u2019 California-based registered dietitian Melanie Murphy Richter told the Daily Mail.<\/p>\n \u2018From a clinical standpoint, metabolism is much bigger than calorie burn. It\u2019s how your body is making and using energy, how stable your blood sugar is, how well you\u2019re maintaining muscle, how your circulation is functioning, and even what\u2019s happening at the cellular level.’<\/p>\n Richter added: \u2018When something is “off,” it\u2019s rarely just one thing. It\u2019s usually a combination of shifts that we also see tied to aging.<\/p>\n \u2018Things like insulin resistance, changes in mitochondrial function, loss of muscle, or early changes in cardiovascular health.\u2019<\/p>\n And when these underlying issues take hold, the body becomes less efficient at using energy. So the same calories someone ate five years ago now stick around as fat; the same workout that used to trim them down now barely moves the needle.\u00a0<\/p>\n The body might sometimes leave clues that a metabolic issue is behind weight gain. One major clue is fat building deep in the belly. Persistently high insulin levels push the body to store more energy as fat while making it harder to break that fat down (stock image)<\/p>\n<\/div>\n![\"The](\"https:\/\/i.dailymail.com\/1s\/2026\/05\/21\/16\/108779323-15773357-The_body_might_sometimes_leave_clues_that_a_metabolic_issue_is_b-a-10_1779378100748.jpg\")
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