Zinc Deficiency Increases Salt Craving And Salt Intake

Discussion in 'Articles & Scientific Studies' started by paymanz, Oct 1, 2016.

  1. paymanz

    paymanz Member

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    The effect of zinc deficiency on salt taste acuity, preference, and dietary sodium intake in hemodialysis patients. - PubMed - NCBI

    Introduction High sodium intake is the main cause of fluid overload in hemodialysis (HD) patients, leading to increased cardiovascular mortality. High sodium intake is known to be associated with low salt taste acuity and/or high preference. As the zinc status could influence taste acuity, we analyzed the effect of zinc deficiency on salt taste acuity, preference, and dietary sodium intake in HD patients. Methods A total of 77 HD patients was enrolled in this cross-sectional study. Zinc deficiency was defined as serum zinc level with below 70 µg/mL. The patients were divided into two groups based on serum zinc level. Salt taste acuity and preference were determined by a sensory test using varying concentrations of NaCl solution, and dietary sodium intake was estimated using 3-day dietary recall surveys. Findings The mean salt recognition threshold and salt taste preference were significantly higher in the zinc deficient group than in the non-zinc deficient group. And there was significant positive correlation between salt taste preference and dietary sodium intake in zinc deficient group (r = 0.43, P = 0.002). Although, the dietary sodium intake showed a high tendency with no significance (P = 0.052), interdialytic weight gain was significantly higher in the zinc deficient group than in the non-zinc deficient group (2.68 ± 1.02 kg vs. 3.18 ± 1.02 kg; P = 0.047). Discussion Zinc deficiency may be related to low salt taste acuity and high salt preference, leading to high dietary sodium intake in HD patients.


    Zinc deficiency and taste dysfunction; contribution of carbonic anhydrase, a zinc-metalloenzyme, to normal taste sensation. - PubMed - NCBI
     
  2. JackHanma

    JackHanma Member

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    Anyone here experiment with high zinc and notice a lower salt craving as a result?
     
  3. OP
    paymanz

    paymanz Member

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    The study reported zinc deficiency causing increased salt carving, as zinc is necessary for taste function.

    I'm not sure if higher zinc intake lower salt intak.
     
  4. Amazoniac

    Amazoniac Member

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    Maybe zinc deficiency means high stress in which higher intakes of sodium can be therapeutic..
     
  5. JackHanma

    JackHanma Member

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    True.
    Found this:
    Zinc Deficiency Associated with Hypothyroidism
    Zinc Deficiency Associated with Hypothyroidism: An Overlooked Cause of Severe Alopecia


    and from Water: swelling, tension, pain, fatigue, aging

    "Hypothyroid people typically retain water, while losing salt......The typical hypothyroid person loses salt rapidly in the urine (and probably in the sweat, too, though that is usually diagnosed as cystic fibrosis)"

    If the zinc deficiency is a causation of hypothyroidism and Ray says hypothyroidism causes rapid salt waste, then the correcting of a zinc deficiency would decrease salt cravings, because salt is not wasted in a proper working thyroid.
     
  6. OP
    paymanz

    paymanz Member

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    Interesting.

    But apparently according to that study ,hypothyroidism is causation of zinc deficiency...
     
  7. ivy

    ivy Member

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    This is an amazing find, @JackHanma ! Thanks!
     
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