1. Research shows that dairy may be linked with developing a variety of cancers
The evidence assembled here suggests that dairy-sourced hormones, may be the source of the androgenic and mitogenic progestins that drive prostate and breast cancer.
The 5alpha-reduced compound 5alpha-pregnanedione (5α-P) present in milk is a direct precursor of dihydrotestosterone and may act through that pathway in prostate cancer, but 5α-P has also recently been shown to be capable of inducing estrogen receptors in breast cancer cells, upregulating cancer cells' sensitivity to estrogen.
Source: Dartmouth Medical School (William Danby, Assistant Professor of Medicine)
2. Research suggests that acne can be worsened through dairy intake
The exact cause of acne is unknown, but there are a number of factors that can bring on acne or make it worse, including hormones, genetics, and emotional stress. Recently, dermatologists have taken another look at whether diet’s role in acne is a myth.
Several new studies have examined the possible link between diet and acne, particularly carbohydrates and dairy products.
The emerging evidence has prompted dermatologists to reexamine the possibility that certain foods can worsen or trigger acne.
Source: American Academy of Dermatology
3. Four types of hormones are found in diary products (Glucocorticoids, Androgens, Progesterone & Estrogens), with high concentration in milk
During the last couple of years, increasing body of evidence are indicating another property of hormones in dairy products as possible impact on human health including the role of some estrogens and insulin-like growth factor-1 in initiation and provoking of breast, prostate and endometrial tumours.
The most important hormones found in milk and other dairy products by using a variety of analytical methods consist of prolactin, steroids including estrogens, progesterone, corticoids, and androgens. Moreover, the existence of other hormones such as insulin-like growth factor-1 (IGF-1) (3) and local hormones including prostaglandins (PGs) (4, 5), in dairy products has been reported. It has been assumed that most of the hormones are transferred into milk by diffusion.
Source: US National Library of Medicine (Narrative Review of 125 studies by Urmia University, Iran.)
4. When Whey Protein Powders Were Tested, They Found High Levels of Toxic Metals
They studied 15 protein powders and drinks mainly in the New York metro area or online and tested multiple samples of each for arsenic, cadmium, lead, and mercury. The results showed a considerable range, but levels in three products were of particular concern because consuming three servings a day could result in daily exposure to arsenic, cadmium, or lead exceeding the limits proposed by USP.
When these toxic heavy metals are combined in a product that is marketed for daily use, that raises serious public health concerns, especially for pregnant women, children, and young adults.
Source: Consumer Report
5. Protein Derived From Milk Inhibits Our Vitamin D, Increasing the Risk of Auto Immune Disease
Vitamin D is important for the proper regulation of the immune system. For people who live at higher geographic latitudes, a lack of exposure to ultraviolet sunlight can result in a deficiency. The consumption of animal protein, especially casein in cow's milk, results in higher concentrations of calcium in the blood, which inhibits the process by which the body activates vitamin D in the kidneys to a form that helps repress the development of autoimmune diseases.
Source: The China Study + Guyton and Hall Textbook of Medical Physiology
6. Whey Protein Elevates Ketone Levels in Our Blood, Increasing the Risk of Ketosis & Liver Damage
In some cases, whey protein has been found to cause liver damage related to ketosis. Ketosis is characterised by elevated levels of ketones in the blood. Doctors consider the condition very dangerous, since it causes stress on the liver that might lead to liver damage.
Source: Kaplan University’s School of Health Sciences
7. Excessive Whey Protein Intake May Result In The Development of Abnormal Heart Rhythms and Possible Cardiac Arrest
In Nutrition Therapy and Pathophysiology, Marcia Nelms, Kathryn Sucher and Sara Long Roth report that excessive whey protein intake may be especially dangerous for those who suffer from certain types of heart disease, as it may result in the development of abnormal heart rhythms and possible cardiac arrest or the complete loss of heart function.
Nelms, Sucher and Roth also note that taking whey protein in excess or for longer than six months can be damaging to kidney and liver health. They further caution that long-term, excessive damage to the kidneys and liver may necessitate the need for organ transplantation or kidney dialysis.
Source: Nutrition Therapy and Pathophysiology
8. Whey Protein Causes Stress on the Digestive System Due to its Highly Processed Structure
Whey protein is highly processed and often heated to the point that the protein within it is denatured, which makes it nearly impossible for the body to recognise and use. The result is higher levels of acidity and toxicity in the body, which can lead to plenty of unwanted illnesses and diseases. Furthermore, you end up experiencing the bloating, distended stomach, and gassiness that are a common side effect of whey protein.
Source: Mind Body Green
9. Casein (Milk Protein) Protein Powder Increases Cancer Cell Size
According to ‘The China Study’ written by Dr. T. Colin Campbell & Dr. Thomas Campbell, casein has the ability to turn on and turn off cancer growth simply by adjusting the level of intake of that protein. This was determined through years of clinical trials, experiments, and tests, which yielded these results, and are outlined in detail in Dr. Campbell’s research. His findings show that when casein is consumed in large quantities, cancer cells increase in size, and when there is a cessation in consumption of casein, cancer tumor cells recede.
What is Casein? Casein is the main protein present in milk and (in coagulated form) in cheese. It is used in processed foods and in adhesives, paints, and other industrial products. It is also sold as a Protein Supplement by many large multi-national fitness brands.
Source: The China Study + More Information
10. Whey Protein Causes Excessive Strain on Your Kidneys, Which Leads To Kidney Problems
One of the primary functions of your kidneys is to remove waste products from your blood. Whey Protein metabolism produces toxic wastes such as urea, ammonia, and uric acid. These waste products cause your kidneys to work harder, leading to an increased risk of disease and illness.
Source: American Journal of Kidney Disease
11. Whey Protein is Made From Cow Milk, Which Has Been Linked With Inflammation, Cancer, Cholesterol and Diabetes
Milk is perhaps the most common self-reported food allergen in the world. The protein in milk has been shown to promote increased cholesterol levels. It has also been linked with an increase IGF-1, which is implicated in several cancers. Cow’s milk protein is also linked with triggering type-1 diabetes through a process called molecular mimicry.
Source: Nutrition Studies
12. Dairy Products Increase the Chance of Developing Acne and Worsen its Severity
Many have suggested a diet-acne link, but until recently it has not been proven in large clinical studies. Instead dermatologists prescribe long-term antibiotics and Accutane, both of which may cause long-term harmful effects. In 2009, a systematic review of 21 observational studies and six clinical trials found clear links. Two large controlled trials found that cow’s milk increased both the number of people who got acne and its severity.
Source: Dr Hyman, MD
13. Dairy Product Can Increase DHT Which Has Been Linked with Increased Hair Loss
Milk contains dihydrotestosterone (DHT) precursors, including 5a-pregnanedione and 5a-androstanedione. These hormones are only few steps away from DHT. For acne victims and those looking for healthy hair, more DHT equals bad news. DHT acts on the skin, sometimes producing acne, and on the hair follicles, putting hair on the chest but often taking it off the scalp.
Source: Dartmouth Medical School, Harvard Medical School