
High-protein diets and atherosclerosis (artery hardening)
Research on the connection between high-protein diets and atherosclerosis (artery hardening) is ongoing and somewhat complex. While some studies suggest a potential link, the picture isn’t entirely clear-cut. Here’s a breakdown of what we currently know:
Potential Concerns:
- Increased strain on kidneys: High-protein diets can put a strain on the kidneys as they work to filter out excess protein waste products. This could be a concern for individuals with pre-existing kidney problems.
- Changes in blood chemistry: High-protein diets may alter blood cholesterol levels, potentially increasing LDL (“bad”) cholesterol and decreasing HDL (“good”) cholesterol in some cases. This can contribute to plaque buildup in arteries.
- Dietary sources of protein: The type of protein you consume matters. Diets high in red meat, processed meats, and saturated fats often associated with high-protein plans might be more detrimental to heart health compared to protein sources like fish, legumes, and nuts.
Studies and Considerations:
- A 2024 study published in Nature Metabolism found that high-protein diets (exceeding 22% of daily calories from protein) might increase atherosclerotic plaque formation in mice and humans, despite promoting weight loss and improved glucose tolerance.
- However, it’s important to note that this was a short-term study, and long-term effects need further investigation.
- Overall, the quality of protein intake seems to be a crucial factor. Diets rich in plant-based protein sources and lean animal proteins might have a less detrimental impact on heart health compared to those high in red meat and saturated fats.
It’s important to remember that:
- Atherosclerosis is a complex disease influenced by various factors like genetics, lifestyle habits (smoking, lack of exercise), and overall dietary patterns. High-protein intake might be one piece of the puzzle, but it doesn’t necessarily guarantee the development of atherosclerosis.
- Individual needs vary. Consulting a healthcare professional or registered dietitian is crucial for personalized dietary advice, especially if you have pre-existing health conditions or concerns.
Here are some resources for further exploration:
- National Institutes of Health (NIH) on Atherosclerosis
- American Heart Association on Dietary Fats
- The National Center for Complementary and Integrative Health (NCCIH) on Protein Supplements