Low-Calorie Diets Tied to Inflammatory Skin Diseases

 

A new study published in Clinical, Cosmetic and Investigational Dermatology suggests that low-calorie diets, while often seen as beneficial for weight management, may be linked to a slightly higher risk of psoriatic arthritis (1^✔).

The research explored whether popular diets such as low-calorie, vegetarian, and gluten-free diets have a direct causal relationship with common inflammatory skin diseases including acne, atopic dermatitis, psoriasis, and psoriatic arthritis.

Study Links Low-Calorie Diets to Psoriatic Arthritis Risk

The researchers found a positive causal link between low-calorie diets and psoriatic arthritis. This means individuals genetically predisposed to follow a low-calorie diet may have a modestly increased risk of developing this joint-related skin disease. Interestingly, no significant association was found between vegetarian or gluten-free diets and inflammatory skin conditions. These findings were confirmed through several statistical checks to ensure their reliability.

How Restrictive Diets Affect Skin and Immunity

Inflammatory skin diseases like psoriasis, acne, and eczema often arise from imbalances in the immune system. Diet plays an important role in regulating inflammation, and while certain eating patterns can promote healing, poorly balanced diets may trigger nutrient deficiencies that worsen skin health. The study noted that long-term restrictive diets could potentially affect immune regulation and skin barrier repair, both of which are vital for keeping inflammation under control.

Low-Calorie Diet and Its Link to Inflammation and Joint Health

The researchers suggest that prolonged calorie restriction might lead to malnutrition, affecting key vitamins, minerals, and proteins that support immune function. When nutrient levels drop, the body’s ability to control inflammation weakens, which could make individuals more susceptible to inflammatory joint conditions like psoriatic arthritis. Experts believe that maintaining a nutritionally balanced diet is more beneficial than severely cutting calories.

Vegetarian and Gluten-Free Diets and Their Effect on Skin Health

Contrary to popular belief, the study found no genetic evidence that vegetarian or gluten-free diets cause or prevent inflammatory skin diseases. However, the authors caution that unbalanced versions of these diets could still harm skin health if essential nutrients such as vitamin B12, zinc, and omega-3 fatty acids are lacking. The takeaway is clear: diet choices should be guided by overall nutritional adequacy, not trends.

Why Moderation Matters in Every Diet Trend

The study’s findings challenge the assumption that all popular diets are equally safe for everyone. While eating less or cutting out certain foods may seem healthy, the body’s inflammatory response can tell a different story. The key lies in balance, nourishment, and long-term sustainability, not extremes.

Healthy skin begins with a healthy relationship with food. Listen to your body, nourish it with care, and remember that balance is more powerful than restriction.

Reference:

1. Causal Relationships Between Popular Diets (Low-Calorie, Vegetarian, and Gluten-Free Diets) and Inflammatory Skin Diseases: A Mendelian Randomization Study - (https://www.dovepress.com/causal-relationships-between-popular-diets-low-calorie-vegetarian-and--peer-reviewed-fulltext-article-CCID)

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