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[Alternative nutrition and glutathione levels]
M Krajcovicová-Kudlácková1, R Simoncic, A Béderová
1Výskumný ústav výzivy, Bratislava.
Casopis Lekaru Ceskych
|November 24, 1999
Summary
Vegan diets may pose risks due to low protein intake, leading to lower glutathione levels. Lacto-ovo vegetarians have adequate protein and higher glutathione, indicating a balanced alternative. Ensure adequate sulfur-containing amino acids for optimal health.
Area of Science:
- Nutritional Biochemistry
- Human Nutrition
- Dietary Science
Context:
- Alternative diets, including vegetarian and vegan, are increasingly popular.
- Concerns exist regarding the adequacy of nutrient intake, particularly sulfur-containing amino acids, in plant-based diets.
- Glutathione (GSH) plays a crucial role in cellular defense and detoxification.
Purpose:
- To investigate the impact of vegan and lacto-ovo vegetarian diets on glutathione levels and related enzyme activity in adults.
- To compare these levels with those of omnivores.
- To assess the nutritional risks associated with plant-exclusive diets.
Summary:
- Vegans exhibited significantly lower total protein and glutathione levels compared to omnivores, with a 16% incidence of hypoproteinaemia.
- Lacto-ovo vegetarians, consuming adequate protein with animal products, showed protein and glutathione levels comparable to or higher than omnivores.
- Higher erythrocyte glutathione peroxidase and glutathione-S-transferase activity were observed in lacto-ovo vegetarians, indicating robust antioxidant defense.
Impact:
- Findings highlight the potential risk of inadequate sulfur-containing amino acid intake in vegan diets, affecting glutathione status.
- Lacto-ovo vegetarian diets appear to provide sufficient protein and support adequate glutathione levels.
- This research underscores the importance of careful nutritional planning for individuals on plant-based diets to maintain optimal health and antioxidant capacity.