Ageing brings many changes, particularly for women over 40. From hormonal shifts to metabolic slowdowns, the body's nutritional needs evolve. One of the most overlooked yet essential dietary components at this stage is protein—a macronutrient critical for maintaining muscle mass, supporting metabolic health, and ensuring vibrant skin.
Within this conversation, glycine, an amino acid found abundantly in collagen, becomes increasingly important. Emerging research suggests that adequate protein intake, particularly with a focus on glycine, can help counteract the effects of ageing and promote overall well-being.
Why Women Over 40 Need More Protein Than Ever
The outdated notion that protein is only for athletes or bodybuilders is long gone. Science now confirms that as women age, their protein requirements increase to maintain strength, vitality, and resilience.
Key reasons why protein is essential after 40:
✅ Prevents Muscle Loss: Age-related muscle loss (sarcopenia) begins as early as 30 but accelerates post-40, leading to reduced strength and increased risk of falls.
✅ Supports Metabolism & Weight Control: Protein promotes lean muscle mass, which burns more calories at rest and supports metabolic function.
✅ Improves Skin, Hair & Nail Health: Collagen, the protein that keeps skin firm and hair strong, declines with age, leading to wrinkles, sagging, and hair thinning.
✅ Strengthens Bones: Women are at higher risk of osteoporosis post-menopause, and protein plays a key role in bone density and strength.
The Recommended Dietary Intake (RDI) for protein is 0.8 grams per kilogram of body weight, but leading researchers now recommend 1.2–1.5 grams per kilogram for older adults to prevent muscle deterioration and maintain overall health (Deutz et al., 2014).
The Special Role of Glycine in Ageing and Longevity
Glycine, a conditionally essential amino acid, is one of the most important yet often overlooked nutrients for women over 40. It makes up approximately 33% of collagen protein—the structural foundation of skin, joints, and connective tissues.
Why Glycine Becomes Critical for Women Over 40:
✔️ Boosts Collagen Production: Glycine is essential for collagen synthesis, which naturally declines with age, leading to wrinkles, joint pain, and weaker connective tissues.
✔️ Prevents Muscle Wasting: Studies indicate that glycine supplementation helps combat muscle loss in ageing individuals (Fukada et al., 2021).
✔️ Regulates Blood Sugar & Metabolism: Glycine has been shown to improve insulin sensitivity, helping to balance blood sugar and reduce metabolic disease risk (Knecht et al., 2021).
✔️ Improves Sleep & Brain Function: Glycine has been found to enhance sleep quality and cognitive performance, two areas that often decline with age (Bannai & Kawai, 2012).
✔️ Powerful Detoxifier & Anti-Ageing Compound: Glycine is a precursor to glutathione, the body’s most powerful antioxidant, which helps combat oxidative stress and inflammation, two key drivers of ageing.
Unfortunately, modern diets are often low in glycine, as muscle meats (chicken breast, steak) contain little of it, while collagen-rich sources (bone broth, organ meats) are rarely consumed. This imbalance may accelerate signs of ageing if not corrected.
By Beth Bovine Collagen: The Perfect Protein for Women Over 40
The easiest way to replenish glycine and support optimal protein intake—without overhauling your diet—is by incorporating a high-quality bovine collagen supplement into your daily routine.
Why By Beth Bovine Collagen is the ideal solution:
🌿 Naturally High in Glycine, Proline & Hydroxyproline – the essential amino acids for collagen synthesis and connective tissue repair.
🌿 Easy to Digest & Absorb – unlike some protein sources that may cause bloating or discomfort.
🌿 Promotes Radiant Skin, Strong Hair & Joint Health – working from the inside out to support beauty and longevity.
🌿 A Clean, Pure Source of Protein – no unnecessary fillers, additives, or synthetic ingredients—just premium Australian bovine collagen.
Final Thoughts: Prioritising Protein for a Healthier, Stronger Future
As women move beyond 40, their nutritional needs change—and protein, particularly collagen-rich sources high in glycine, becomes non-negotiable for maintaining energy, muscle strength, and glowing skin.
With science-backed evidence on the role of protein and glycine in ageing, incorporating By Beth Bovine Collageninto your daily wellness routine is a simple yet powerful way to support beauty, health, and longevity from within.
Ready to feel stronger, healthier, and more radiant?
Try By Beth Bovine Collagen today and experience the science of beauty and vitality firsthand.
