Side Effects of Drinking Protein Shakes

1. Allergic reactions


Allergy specialists at the University of Nebraska Medical Center report seeing several patients with significant allergic reactions after drinking whey protein shakes.

2. Consuming more calories than you realize


"Protein shakes can be very high in calories, especially from added sugars," says Leann Poston, MD, of Invigor Medical.

3. Kidney stones


Diets that are very heavy on proteins and low in carbohydrates raise urine calcium and can increase the risk of developing kidney stones and cause liver damage

4. Stronger bones


The researchers found that the risk of fracture went down in the men as protein consumption from all sources went up.

5. A mucked-up microbiome


Many protein powders lack fiber, which can cause a gut microbiota imbalance, and affect your immune system

6. Extra calorie burn


There's a lot of really solid evidence that protein has a higher thermogenic effect than its counterpart macronutrients, fats, and carbohydrates


This means your body will burn more calories metabolizing that protein through digestion.


Eating protein increases satiety to a greater extent than carbohydrate or fat and may result in reduced calorie intake

7. Better hunger management


A Study found that high protein diets may directly affect cardiovascular health, potentially increasing the risk of a heart attack.

8. Increased heart attack risk

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