Pork Loin

Variants (2)

Nutrition · per ~85 g serving · ≈ a palm-sized piece (~3 oz)

Score · 80/100

Overview

Pork loin comes from the back of the pig and has been a dietary staple across cultures for thousands of years. Modern pork loin is notably lean compared to historical cuts, with approximately 9.8g of fat per 100g. This meat delivers 20.85g of protein per 100g, supporting muscle protein synthesis critical for preserving lean mass during aging. Beyond protein, pork loin provides selenium (33.3 mcg)—a cofactor for glutathione peroxidase, a crucial antioxidant enzyme—and niacin (7.2 mg), which supports mitochondrial function and DNA repair. The choline content (71.6 mg) is particularly relevant for cognitive health and cell membrane integrity. Pork loin also supplies bioavailable heme iron and phosphorus for bone mineralization. The monounsaturated fat profile (4.3g per 100g) is favorable compared to saturated fat content. For longevity-focused nutrition, pork loin offers an efficient protein source with micronutrient density comparable to poultry while providing unique micronutrients like selenium that support aging well. Choose cuts labeled 'loin' rather than 'shoulder' for optimal fat profile.

Health Benefits (5)

• Supports muscle protein synthesis and lean mass preservation with age

  strong
  High-quality protein (20.85g/100g) containing all essential amino acids, particularly leucine, which activates mTOR pathway for muscle anabolism
• Reduces oxidative stress through selenium-dependent antioxidant defense

  strong
  Selenium (33.3 mcg/100g) is a structural component of glutathione peroxidase and thioredoxin reductase, enzymes that neutralize reactive oxygen species and protect cellular proteins from damage
• Supports cognitive function and neurological health

  moderate
  Choline (71.6 mg/100g) is a precursor for acetylcholine neurotransmitter and phosphatidylcholine in myelin sheaths, supporting synaptic plasticity and memory formation
• Enhances energy metabolism and DNA repair capacity

  strong
  Niacin (7.2 mg/100g) functions as a cofactor for NAD+-dependent enzymes involved in mitochondrial ATP production and PARP-mediated DNA damage repair
• Improves iron status and oxygen transport efficiency

  strong
  Heme iron in pork (bioavailability ~20-30%) is more readily absorbed than non-heme iron, supporting hemoglobin synthesis and mitochondrial cytochrome c oxidase function

Food Pairings

• ·Pair with vitamin C-rich vegetables (bell peppers, broccoli) to enhance heme iron absorption by up to 3-fold through reduction of ferric to ferrous iron
• ·Combine with selenium-rich Brazil nuts or mushrooms for additive antioxidant protection via complementary glutathione peroxidase and ergothioneine pathways
• ·Serve with whole grains (quinoa, oats) to create complete amino acid profile and provide B vitamins that work synergistically with niacin for energy metabolism
• ·Pair with cruciferous vegetables (Brussels sprouts, cabbage) containing sulforaphane, which upregulates phase II detoxification enzymes complementing selenium's antioxidant role

Practical Tips

• ·Select pork loin labeled 'center-cut' or 'rib end' over 'sirloin end'—these cuts have lower fat and higher protein density
• ·Cook to internal temperature of 63-68°C (145-155°F) rather than fully cooked to preserve heat-sensitive B vitamins like niacin and thiamine
• ·Store raw pork loin at 0-4°C and use within 3-5 days; freeze at -18°C for up to 6 months to prevent oxidative degradation of selenium-containing amino acids
• ·Trim visible fat before cooking to reduce saturated fat intake while retaining nutrient-dense lean muscle; avoid charring at high temperatures to limit heterocyclic amines (HCAs)
• ·Portion size: 100-150g per serving balances protein intake (20-31g) without excess calories; aim for 2-3 servings weekly as part of varied protein sources

Optimal Timing

Pork loin's high protein content (20.85g/100g) and complete amino acid profile optimally support muscle protein synthesis post-exercise when myofibrillar protein breakdown is elevated. The selenium and niacin support immediate mitochondrial recovery and ATP resynthesis.

While suitable for any meal, post-workout timing maximizes protein utilization efficiency. Suitable for all times but most impactful for muscle recovery goals when consumed within 1-2 hours post-resistance exercise.

Concerns

• · Moderate saturated fat