It's complicated, but generally, no, milk doesn't directly increase cortisol, and some components may even help reduce it. Here's a more detailed breakdown:
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Calcium Deficiency and Cortisol: A diet low in calcium may actually stimulate cortisol synthesis, particularly in visceral adipose tissue. Milk is a good source of calcium, so adequate calcium intake through milk consumption could help prevent this increase.
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Whey Protein and Cortisol Reduction: Whey protein, a component of milk, and specific compounds found in the whey fraction of milk have been shown to decrease both basal (normal) and stress-related circulating salivary cortisol levels. These components may also improve mood and cognitive function.
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Dairy's Impact on Stress Response: Some studies indicate that consuming dairy products, including milk, might help modulate the body's response to stress, potentially lowering cortisol levels during stressful periods.
In summary:
- Low Calcium Intake: Can potentially increase cortisol.
- Milk Consumption: Due to its calcium and whey protein content, is more likely to help regulate or decrease cortisol levels, particularly in response to stress. However, individual responses can vary.
