You likely feel sleepy after drinking lassi due to the combination of lactose fermentation during yogurt production and the overall digestive process.
Here's a breakdown of the reasons:
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Lactate Production:
- Lassi is made from yogurt. During yogurt production, milk sugar (lactose) undergoes lactate fermentation. This process converts lactose into lactate (lactic acid).
- Lactate is believed to contribute to feelings of fatigue or sleepiness in some individuals.
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Digestion:
- The digestion process itself requires energy. Your body dedicates resources to breaking down the lassi, which can lead to a temporary feeling of lethargy.
- Foods high in carbohydrates, like lassi (due to the lactose and any added sugars), can cause a spike in blood sugar followed by a subsequent drop, contributing to sleepiness.
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Tryptophan and Calcium:
- Milk products contain tryptophan, an amino acid that the body uses to produce serotonin and melatonin. Serotonin helps regulate mood, and melatonin helps regulate sleep.
- Calcium, also present in lassi, may help the brain use tryptophan more effectively.
In summary, the lactate produced during yogurt fermentation, the energy expenditure required for digestion, and the presence of tryptophan and calcium can collectively contribute to feeling sleepy after drinking lassi.
