Milk consumption and health
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Milk Consumption and Nutrient Intake
Milk is a rich source of essential nutrients, including protein, calcium, magnesium, phosphorus, potassium, zinc, selenium, vitamin A, riboflavin, vitamin B12, and pantothenic acid, making it a key contributor to meeting daily nutritional requirements for people of all ages Gil2019Auclair2019Pereira2014+1 MORE. In particular, milk and dairy products provide more than 20% of total intakes of calcium, vitamin D, vitamin B12, vitamin A, phosphorus, and riboflavin in many populations . These nutrients are especially important for bone growth in children and maintaining bone health in older adults Marangoni2018Lambrini2020.
Milk Consumption and Chronic Disease Prevention
Cardiovascular Health and Metabolic Syndrome
Multiple studies show that regular milk consumption is associated with a lower risk of cardiovascular disease, stroke, and hypertension Zhang2021Gil2019Yuan2022+2 MORE. Both full-fat and low-fat dairy products do not increase the risk of cardiovascular disease, and may even have a subtle protective effect Gil2019Fontecha2019. Additionally, milk intake is linked to a reduced risk of metabolic syndrome and improved blood pressure and cholesterol profiles Zhang2021Gil2019Yuan2022+1 MORE.
Obesity, Diabetes, and Weight Management
Evidence suggests that milk and dairy products may help protect against overweight, obesity, and type 2 diabetes Zhang2021Marangoni2018Gil2019+2 MORE. In children, milk intake is associated with a reduced risk of obesity, while in adults, dairy consumption can improve body composition and support weight loss during calorie restriction .
Bone Health and Osteoporosis
Milk is crucial for bone mass development in children and helps maintain bone health in adults. It is associated with a lower risk of osteoporosis and vertebral fractures, though not necessarily with reduced risk of hip fractures Zhang2021Marangoni2018Gil2019+2 MORE.
Cancer Risk
Milk consumption is linked to a lower risk of colorectal, bladder, gastric, and breast cancers, with no clear association with pancreatic, ovarian, or lung cancer Zhang2021Gil2019Yuan2022+1 MORE. The evidence for prostate cancer risk is inconsistent, with some studies suggesting a possible increased risk Zhang2021Yuan2022Thorning2016. Moderate milk intake may also be associated with a lower risk of colorectal and bladder cancer .
Other Health Outcomes
Milk intake may reduce the risk of type 2 diabetes, Alzheimer's disease, cataracts, and anal and rectal polyps Zhang2021Gil2019Yuan2022. However, there is some evidence of a higher risk of Parkinson's disease and acne with higher milk consumption Zhang2021Yuan2022.
Potential Risks and Considerations
While milk offers many health benefits, it may not be suitable for everyone. Some individuals experience lactose intolerance or milk protein allergy, which can cause digestive discomfort or allergic reactions Zhang2021Marangoni2018Pereira2014. There is also a potential risk of iron-deficiency anemia in infants who consume large amounts of cow's milk . For those who cannot consume milk, plant-based alternatives are available, but they differ nutritionally and may not provide the same health benefits without fortification .
Conclusion
Overall, the scientific evidence supports that milk consumption, as part of a balanced diet and according to national guidelines, provides significant health benefits, including improved nutrient intake and reduced risk of several chronic diseases. The benefits generally outweigh the risks, except for individuals with specific medical conditions such as lactose intolerance or milk allergy. Milk remains an important dietary component for people of all ages, contributing to long-term health and disease prevention Zhang2021Marangoni2018Gil2019+6 MORE.
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