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美国人吃得又甜又油 痴呆风险高

【附】Why is buttermilk considered healthy?

《万维读者网》《世界新闻网》 August 25, 2016

新研究警告，西方饮食中又甜又肥的垃圾食物，提高你罹患阿兹海默症的风险。与其他国家比起来，美国人患此病的风险较高，而且多年来一直如此。

　　这可能是因为美国人的饮食模式，提升胆固醇和导致阿兹海默症的蛋白质，在大脑造成阻滞。

旧金山“阳光、营养与健康研究中心”的格兰特 (William Grant)医生领导这项里程碑式的国际审查，追踪阿兹海默症和其原因。刊登在“美国营养学会期刊”。

　　格兰特指出，从生态和观察研究所得愈来愈多的证据显示，西方饮食模式，特别是肉量多，与罹患阿兹海默症有强烈关连。

　　虽然与西方饮食比起来，传统的地中海饮食能使阿兹海默症的风险减半，但是印度、日本和尼日利亚等国家的传统饮食，能使此病的风险再降50%。

　　格兰特也调查改变全球饮食，如何影响阿兹海默症。首先他审视了10个国家（巴西、智利、古巴、埃及、印度、蒙古、尼日利亚、韩国、斯里兰卡和美国）的阿兹海默症的普及性，接着交叉核对官方饮食准则。

　　结果他发现，在每一个国家，每次转向西方饮食，就会出现阿兹海默症增加的现象。格兰特警告，与阿兹海默症最有关的饮食，似乎是吃肉，蛋和高脂乳制品也有影响。多吃谷物、水果、蔬菜、鱼、和摄取多量维他命D，与降低该病风险有关。

Why is buttermilk considered healthy?

Buttermilk, despite its name, does not actually contain butter. It is a fermented dairy product that is commonly consumed in various cultures around the world. Although it has a tangy taste and creamy texture, buttermilk is often considered a healthy beverage due to its numerous nutritional benefits. In this response, I will explore some of the reasons why buttermilk is considered healthy.

1. Probiotics: Buttermilk is created through the fermentation of milk by lactic acid bacteria. This fermentation process introduces beneficial bacteria known as probiotics into the buttermilk. Probiotics are live microorganisms that can confer health benefits when consumed. They help maintain a healthy balance of bacteria in the gut, promoting good digestive health and a strong immune system.

2. Digestive Health: The presence of probiotics in buttermilk can aid in digestion. Probiotics help break down lactose, the sugar present in milk, making it easier to digest for individuals who are lactose intolerant. They also help maintain a healthy gut microbiome, which can improve overall digestion and nutrient absorption.

3. Calcium and Vitamin D: Buttermilk is a good source of calcium, a mineral essential for healthy bones and teeth. Calcium plays a vital role in maintaining bone density and preventing conditions such as osteoporosis. Some buttermilk products are also fortified with vitamin D, which helps the body absorb calcium more efficiently.

4. Protein: Buttermilk contains a significant amount of protein, which is essential for muscle growth, repair, and maintenance. Protein is also involved in various physiological processes, such as enzyme production, hormone regulation, and immune function.

5. Low Fat Content: Traditional buttermilk is made from the residual liquid left after churning butter. As a result, it has a lower fat content compared to whole milk or cream. This makes buttermilk a suitable option for individuals who are conscious of their fat intake but still want to enjoy the creamy texture and taste of a dairy beverage.

6. Hydration: Buttermilk is a hydrating beverage that can help replenish fluids in the body. It contains water, electrolytes, and various nutrients that contribute to maintaining proper hydration levels. This can be particularly beneficial during hot weather or after physical activity.

7. Vitamin B12: Buttermilk is a natural source of vitamin B12, a nutrient primarily found in animal-based products. Vitamin B12 is essential for the production of red blood cells, nerve function, and DNA synthesis. Adequate intake of vitamin B12 is crucial for overall health and can help prevent deficiencies and related health issues.

8. Weight Management: Due to its lower fat content and relatively low calorie count, buttermilk can be a part of a healthy diet for individuals aiming to manage their weight. It provides a feeling of fullness and satisfaction without adding excessive calories, making it a suitable option for those looking to maintain a healthy weight or lose weight.

It is important to note that while buttermilk can offer several health benefits, individual dietary needs and preferences should be considered. Some commercial varieties of buttermilk may contain added sugars or flavorings, which can affect its nutritional profile. Additionally, those with specific dietary restrictions or allergies should consult with a healthcare professional before incorporating buttermilk into their diet.

Overall, buttermilk can be a nutritious addition to a balanced diet, providing probiotics, calcium, protein, and other important nutrients. However, moderation and mindful consumption are key to reaping its health benefits while considering individual needs and preferences.