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It forms the scaffolding that keeps your skin firm and smooth It cushions your joints and keeps ligaments flexible It helps strengthen bones, blood vessels, and even the gut lining Your body naturally produces less collagen after your 20s, and that decline speeds up with age, weight loss, or nutrient deficiencies Women especially take the brunt of reduced collagen during perimenopause and menopause Your body naturally produces collagen through specialized cells called fibroblasts, which live in your skin, connective tissues, and organs

[1] One study found that vegans showed no signs of carnitine deficiency

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The Bodys Immune Response When your body detects something unusual, like an infection or a new medication, it can trigger an immune response