This type of diet, and there are many versions of them, have been widely promoted as a “quick” way to lose weight through eating 30%-50%, if not more, of your daily calories from protein sources. Whilst this way of eating does help you lose weight quickly, there are many dangers associated with this form of dieting especially over a long period of time.
Risks such as:
High cholesterol. Some protein sources — like fatty cuts of meat, whole dairy products, and other high-fat foods — can raise cholesterol, increasing your chance of heart disease.
Kidney problems. If you have any kidney problems, eating too much protein puts added strain on your kidneys. This could worsen kidney function.
Osteoporosis and kidney stones. When you’re on a high-protein diet, you may urinate more calcium than normal. Experts think this could make osteoporosis and kidney stones more likely.
Insufficient fibre intake can cause problems such as bad breath, headache and constipation. This will also raise your cholesterol levesls
Reduced athletic performance due to not enough intake of the body’s preferred energy source (carbohydrates)
Poor long term weight control especially since reduction of carbohydrates leads to cravings and binge eating on other foods