Turns out they are very important
Many foods that are high in glutathione, sulfur, and other antioxidants have been linked to improved glutathione levels, such as ( 4 ): whey protein powder (high in cysteine) cruciferous vegetables (e.g., broccoli, cabbage, cauliflower, bok choy, Brussels sprouts) allium vegetables (e.g., garlic, onions, shallots) other fruits and vegetables (e.g., asparagus, avocado, cucumber, green beans, mango, papaya, spinach, and tomato) herbs and spices (e.g., curcumin from turmeric) green tea selenium-rich foods (e.g., Brazil nuts, beef, chicken, seafood, dairy products, and whole grains) vitamin C foods (e.g., bell peppers, papaya, mango, oranges, kiwi, Brussels sprouts, cabbage, cauliflower) omega-3s (e.g., fatty fish, omega-3 supplements ) While helpful, it's currently debated whether eating a diet rich in glutathione will significantly improve glutathione levels, since it's not completely absorbed through food

as analyzed by a 2025 systematic review, which reported 7 of 12 knee pain patients maintained relief beyond 6 months after intra-articular injection
Cost-effectiveness of sitagliptin-based treatment regimens in European patients with type 2 diabetes and haemoglobin A1c above target on metformin monotherapy
Tirzepatide, a newer GLP-1/GIP dual agonist, and retatrutide, a triple agonist still in trials, have pushed results even further, with average weight loss approaching 2025% of body weight
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