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Does Whey Protein Hurt the Thyroid?

by
author image Sarka-Jonae Miller
Sarka-Jonae Miller has been a freelance writer and editor since 2003. She was a personal trainer for four years with certifications from AFAA and NASM. Miller also worked at 24 Hour Fitness, LA Fitness and as a mobile trainer. Her career in the fitness industry begin in 2000 as a martial arts, yoga and group exercise instructor. She graduated cum laude from Syracuse University.
Does Whey Protein Hurt the Thyroid?
Close-up of a pile of whey protein powder, with a scoop on top of it. Photo Credit keldererik/iStock/Getty Images

Whey protein is a type of animal protein that is popular with bodybuilders. It is commonly available in health food stores as a powder supplement. Whey protein does not hurt the thyroid -- a small gland in the throat that controls the production of hormones that regulate your metabolism. Weight gain is a possible side effect if your thyroid is not working properly.

Whey Protein

Whey protein is one of the two main proteins in cow's milk. It is present in any food containing milk products or derivatives. Whey is actually a group of proteins that also contains water, fat, lactose, magnesium, phosphorus and calcium. It is a complete form of protein, meaning that it contains all of the essential amino acids. According to Ladd R. McNamara, M.D., whey protein boosts athletic performance, has antiviral and antibacterial properties, and can increase muscle strength and mass when used along with strength training. Dr. McNamara is an author and speaker who specializes in nutritional supplementation.

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Soy Protein

Despite the benefits of whey protein, soy protein may be a better choice if you wish to maintain a healthy thyroid. Soy protein is known to stimulate the thyroid, which can help you lose weight because of the thyroid's effect on your metabolism. If your metabolism slows down due to a decrease in hormone production from the thyroid, you can unexpectedly gain weight. If you are allergic to soy, however, then eating soy protein could actually cause the metabolism to slow down because it would impair thyroid function. Dr. McNamara recommends eating between 25 and 50 grams of soy protein.

Combination

You do not have to avoid whey protein completely if you want to stimulate your thyroid. Combining the two types of protein allows you to receive the muscular development benefits of whey protein and increase thyroid output with soy protein. Mix the two supplements using twice as much whey protein as soy. Before taking any supplements, obtain permission from your doctor.

Thyroid Cancer

Whey protein may be the best protein choice for people with thyroid cancer. The A.P. John Institute for Cancer Research recommends a food program for thyroid cancer patients that advises consuming whey protein at breakfast. This helps you meet your daily requirement of amino acids, which your normal cells need to stay healthy. Whey protein also helps you keep a normal appetite and prevents edema, which is a swelling or water buildup in the body. Eat around 10 to 12 grams of whey protein supplements if you are 150 pounds, or ask your doctor for a recommendation.

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