Is It Safe Or Does It Damage Kidneys?

Consuming protein shakes in intense summer heat can cause additional strain on the kidneys, especially if water intake is inadequate.

Protein smoothies have become a prominent component of current workout regimes. Many people, from gym goers to busy professionals, rely on them for muscle building, weight management, and convenience. However, during intense summer heat, excessive or irresponsible use of protein supplements can cause additional strain on the kidneys, especially if water intake is inadequate (1).

Kidney Disease Risk Due to Protein Supplements is Higher During Summers

In warmer conditions, the body loses more water through perspiration. If fluid intake is insufficient, dehydration can occur silently. At the same time, a high protein consumption increases the number of waste products, such as urea, that the kidneys must filter and eliminate (2). This means that your kidneys may have to work harder throughout the heat.

High-protein diets can also raise uric acid levels and lower urine pH, generating conditions that may favor uric acid kidney stones, especially in dehydrated people (3). When combined with strenuous activities and less water intake, the risk might increase significantly throughout the summer.

For healthy people, modest protein consumption is usually safe. However, difficulties might arise when consumers use several protein shakes per day, or combine them with high-protein diets, fat burners, strenuous activity, or insufficient water consumption. This combination may raise the risk of dehydration, kidney stones, and kidney strain.

Who Should Be More Careful About Consuming Protein Supplements?

People with chronic kidney disease (CKD), diabetes, high blood pressure, obesity, or a history of kidney stones should be very cautious when using protein supplements. Excess protein intake in people with CKD can worsen proteinuria, increase acid accumulation in the body, cause uremic symptoms, and hasten renal function degradation (4).

Many people believe that more protein means better fitness, yet excessive intake does not always lead to an increase in muscle mass (5).

Young fitness enthusiasts are increasingly utilizing supplements without expert supervision. Some over-the-counter products may contain creatine, stimulants, sweets, or other substances that, if consumed incorrectly, might put additional strain on the kidneys.

Do Not Overlook These Warning Signs if You Consume Protein Supplements

Persistent fatigue, edema, decreased urine output, dark urine, muscular cramps, nausea, or flank discomfort could be signs of dehydration or kidney stress. Ignoring these symptoms amid high temperatures can exacerbate the condition.

How to Use Protein Supplements Safely During Summer?

Balance is the safest strategy. Protein drinks should complement a balanced diet rather than replace it totally. Maintaining proper hydration is critical, especially before and after workouts. Choosing medically approved supplements, limiting excessive intake, and talking with a doctor or dietician before beginning long-term supplementation can help prevent issues.

Protein smoothies are not intrinsically hazardous, but in peak summer heat, hydration and moderation are just as important as fitness goals.

Frequently Asked Questions

Which doctor should I consult for advice on protein supplementation?
You should consult a nutritionist or general physician for guidance.

Is protein supplementation better than consuming a high-protein diet?

Protein shakes should complement a balanced diet rather than replace it totally.

Can protein damage the kidneys?

There is no evidence that consuming dietary protein harms the kidneys of otherwise healthy individuals.

Should everyone take protein supplements to meet the daily requirement?

One does not need protein powder to meet the daily requirements.

How much protein do I need to consume daily?

For most individuals, consuming 20–30 grams of high-quality protein across 3–4 meals is sufficient.

References:

1. Whey protein supplementation and its potentially adverse effects on health: a systematic review
   (Vasconcelos QDJS, Bachur TPR, Aragão GF. Whey protein supplementation and its potentially adverse effects on health: a systematic review. Appl Physiol Nutr Metab. 2021 Jan;46(1):27-33. doi: 10.1139/apnm-2020-0370. Epub 2020 Jul 23. PMID: 32702243.)




2. Dietary protein intake and chronic kidney disease
   (Ko GJ, Obi Y, Tortorici AR, Kalantar-Zadeh K. Dietary protein intake and chronic kidney disease. Curr Opin Clin Nutr Metab Care. 2017 Jan;20(1):77-85. doi: 10.1097/MCO.0000000000000342. PMID: 27801685; PMCID: PMC5962279.)




3. Protein intake and risk of urolithiasis and kidney diseases: an umbrella review of systematic reviews for the evidence-based guideline of the German Nutrition Society
   (Remer T, Kalotai N, Amini AM, Lehmann A, Schmidt A, Bischoff-Ferrari HA, Egert S, Ellinger S, Kroke A, Kühn T, Lorkowski S, Nimptsch K, Schwingshackl L, Zittermann A, Watzl B, Siener R; German Nutrition Society. Protein intake and risk of urolithiasis and kidney diseases: an umbrella review of systematic reviews for the evidence-based guideline of the German Nutrition Society. Eur J Nutr. 2023 Aug;62(5):1957-1975. doi: 10.1007/s00394-023-03143-7. Epub 2023 May 3. PMID: 37133532; PMCID: PMC10349749.)




4. Nutrition in Chronic Kidney Disease-The Role of Proteins and Specific Diets
   (Apetrii M, Timofte D, Voroneanu L, Covic A. Nutrition in Chronic Kidney Disease-The Role of Proteins and Specific Diets. Nutrients. 2021 Mar 16;13(3):956. doi: 10.3390/nu13030956. PMID: 33809492; PMCID: PMC7999704.)




5. Common questions and misconceptions about protein supplementation: what does the scientific evidence really show?
   (Antonio J, Evans C, Ferrando AA, Stout JR, Antonio B, Cinteo H, Harty P, Arent SM, Candow DG, Forbes SC, Kerksick CM, Pereira F, Gonzalez D, Kreider RB. Common questions and misconceptions about protein supplementation: what does the scientific evidence really show? J Int Soc Sports Nutr. 2024 Dec;21(1):2341903. doi: 10.1080/15502783.2024.2341903. Epub 2024 Apr 16. PMID: 38626029; PMCID: PMC11022925.)

Source-Medindia