Milk. White Poison or Healthy Drink?

20일 전

Over the past decade, milk has become somewhat controversial. Some people say it is a necessary and nutritious food, essential for bone health, But others say it can cause cancer and lead to early death. Who is correct? And why do we drink it anyway? Milk is the basis of the diet for all mammals after birth. When our digestive system is immature and young. Basically, it is a strong lunch to start our bodies and help us grow. Milk is rich in fats, vitamins, minerals and milk sugar - lactose. Moreover, for a period of time after birth, it also contains antibodies and proteins That protect us from infections and regulating our immune system. But it takes a lot of effort from mothers to produce it. In the end, humans stop drinking breast milk And they move to the parent's diet. This was the case thousands of years ago. Until about eleven thousand years ago, When our ancestors settled in the first agricultural societies. Soon, they domesticated the first dairy animals: Goats, sheep and cattle. They found that dairy animals were able to eat useless and abundant things And turn it into nutritious and delicious food. This made a huge difference in terms of survival, Especially during difficult times. So the groups that had milk had an evolutionary advantage. And through natural selection, It changed the genes of the societies that consumed many of them. This adaptation has to do with a specialized enzyme: lactase. Children have a lot of it in their system, So they can break down lactose milk sugar and easily digest milk. But as we get older, the number of lactase enzymes the body produces. Worldwide, about 65% of the population does not have the enzyme after childhood, This means that they are unable to digest more than about 150 milliliters each day. This lactose intolerance does not spread evenly throughout the world. In some East Asian societies, for example, it reaches 90%. In Northern Europe and North America, rates are generally the lowest. Perhaps there are several reasons for this uneven distribution. The trait was first introduced by a random mutation, That happened independently of one another in a small population. The fact that agriculture replaces hunting and gathering more and more Create a natural selection pressure. People who have been able to digest lactose have more foods on hand, That was an advantage. Dairy farmers' migration to the north then spread more than what drove residents there who did not possess the feature Well, but if milk has been an important part of our diet for thousands of years, why is it so controversial? There are a number of allegations related to the negative and positive health effects of milk. The negativity of them covers a wide range, From osteoporosis to cancer, cardiovascular disease to intolerance and allergies So, how do they hold up? Some ancient studies have found a relationship between milk and a higher risk of colon cancer and prostate cancer However, meta-analyzes found no effect on cancer risk. Conversely, the calcium in milk may have a protective effect against colon cancer. Although this can generally be calcium, it is not clear that milk plays a role in this effect. Studies in prostate cancer have shown an increased risk only for people who consume more than a liter and a quarter of milk per day. But again, the relationship is inconsistent and other studies find no traces. We discuss these studies in more detail in our sources document. All in all, the research seems to show that if you drink between the two of you 100 to 250 ml of milk per day, cancer is not a concern. Likewise, descriptive analyzes could not find any effect from milk or dairy products At risk of heart disease, stroke, or total deaths. Some studies have indicated that high blood pressure may be more rare in people who eat many dairy products, Although the evidence is not strong enough to claim this with confidence. The condition becomes more complicated when we look at the bones. A number of studies did not find positive or negative effects on adults. What worries people most is the presence of harmful amounts of pesticides, antibiotics or hormones. There are hormones in milk, but at very low concentrations. For example to get the same amount of hormones as in the pill, You need to drink about 5,000 liters of milk, Even if you do, most hormones will be destroyed by the digestive system Before they can influence you, This is why so many medications are packed to protect us from our digestion. For pesticides and antibiotics, There are regulations in most parts of the world that allow only completely harmless quantities Milk that crosses these thresholds is not allowed to go on a shelf So there is no cause for particular concern. Besides allergies and lactose intolerance, One of the best known negative effects of milk is acne and general discomfort after drinking milk or eating dairy products. Here the effects are very real. For example, skim milk has been found to increase acne by 24%. Allergy to dairy products is especially common among children, as one of 18 children in Germany suffers from this allergy. Generally, this sensitivity tends to improve or disappear with age. OK. Is milk healthy then? Milk, regardless of whether it comes from mothers, cows, sheep, goats or camels, is a nutrient-dense food. It contains all the necessary macronutrients and many micronutrients. Especially in areas where people struggle to get enough calories, Milk can contribute to a healthy life and lower child mortality. For those who live in the developed world, in general Milk is not harmful if you are not allergic or intolerant. Especially for children, it is a good way to get large amounts of calcium And for vegetarians, it is a good source of Vitamin B12 and Vitamin B in general. This does not mean that there are no other alternatives that have the same effect. You do not need to drink milk to be healthy Milk is definitely not a substitute for water Milk is a powerful food, and the extra calories that result from drinking a lot of it regularly can contribute to weight gain Milk with special flavor or chocolate milk is more comparable with drinks like soft drinks than compared to a healthy snack, and there is something else to consider. Milk production has a major impact on the global climate About 33 percent of crop land is used to feed grazing animals, including dairy cows Although the carbon footprint of dairy products has decreased since 1990 Dairy production still accounts for 3 percent of all greenhouse gas emissions Even more than all the planes combined. Milk is a huge industry, and unfortunately most of its production on factory farms causes tremendous suffering. Cows are fertilized repeatedly and separated from their young soon after birth, They were slaughtered as soon as their tormented bodies became unproductive. We cannot ignore that much of the milk we consume comes from an industry It is mainly torture and contributes to climate change. What about vegetable milk? In terms of protein levels and nutritional value, only soy milk is what can be compared to cow's milk. And other types need industrial enrichment to reach similar levels of vitamins and calcium. To be a substitute for milk. Another option may be available soon. Many startups have created non-animal milk Nutritionally identical to cattle milk, For example, by fermentation by genetically modified bacteria This lab milk can be turned into cheese, Something with which plant alternatives suffer because they lack casein and whey protein, The main ingredients that give dairy its taste and structure. The environmental impact is a different story. Many milk substitutes use less energy, land and water to produce them So they have a much lower environmental impact than animal milk. If you want to have the least possible negative impact on this planet, the best option is to have substitute milk locally. As with any milk subject is complicated. It is not harmful to the majority of the population and is essential for many people all over the world It is a good nutritious food, but also harmful to the planet and causes a lot of suffering As a society, we need to decide how we want to deal with these facts If you want to watch more documentary style videos, check out curiositystream now Broadcast service with thousands of documentaries and non-fictional titles sponsoring this video With subscription to curiositystream curiositystream.com/kurzgesagt Summarize that Curiosity stream gives you access to large budget documentaries from people like David Attenborough and Stephen Hawking For $ 2.99 a month or just $ 19.99 for a full year By visiting curiositystream.com/Kurzgesagt

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