The Food and Drug Administration (FDA) does not regulate all supplements. This means that what is inside the bottle may not be what is on the label.
Some protein powders may be high in sugars and calories, which can cause unwanted weight gain," says Melissa Nieves, RD a registered dietitian at Kemtai
For most healthy individuals, the 20-30 grams of protein in a shake is not really a huge concern to consume every day.
However, it becomes a concern when a number of daily protein shakes start to displace other important nutrients in the diet like healthy fats and fiber-rich, healthy carbs," says registered dietitian
"Protein powder is a good supplement; however, it should not replace whole food protein sources like meats, poultry legumes, and nuts/seeds
"There are some instances of powders containing heavy metals which over time can have a titration effect leading to health problems.
"Many protein powders have milk protein in them. For individuals that have a lactose sensitivity, this can cause discomfort and digestive distress
Those with kidney problems generally need to be cautious of consuming too much protein as the kidneys can struggle with processing high amounts," says Swisher.
Lots of protein powders have tons of flavorings, sugar, and additives to make them taste better. When possible, try to find a protein powder that is minimally flavored
otherwise, all that sugar can add up to something similar to a soda!" says Kostro Miller. This is particularly concerning for those who buy protein powders as supplements in protein smoothies