Nutrition & Longevity

The Power of Diet

Your diet impacts every aspect of aging - from cellular function to disease risk. Research shows nutrition accounts for 30-40% of longevity variance.

Why Nutrition Matters

• Inflammation: Diet is #1 driver of chronic inflammation
• Oxidative Stress: Antioxidants protect cells from damage
• Metabolic Health: Controls insulin, blood sugar, cholesterol
• Gut Microbiome: Feeds beneficial bacteria
• Gene Expression: Nutrients activate longevity genes

Mediterranean Diet: Gold Standard

Linked to longer life in studies (Sofi et al., 2008, BMJ). A modelling study estimated large life-expectancy gains from a lasting switch to a diet richer in legumes, whole grains and nuts (Fadnes et al., 2022, PLoS Medicine); those are model estimates, not a promised result. The calculator caps the combined effect of all healthy answers (see How It Works).

Core Components

• Olive oil as primary fat (4+ tbsp/day)
• Vegetables: 5-9 servings daily
• Fruits: 2-4 servings daily
• Legumes: 3+ servings/week
• Fish: 2-3 servings/week
• Nuts: 1 oz (30g) daily
• Whole grains vs refined
• Moderate red wine (optional)
• Limited red meat, dairy, sweets

Foods Linked to Longer Life

Vegetables & Fruits

Each extra daily serving was linked to about 5% lower mortality, levelling off at around five servings a day (Wang et al., 2014, BMJ)

• Leafy greens: kale, spinach, arugula
• Cruciferous: broccoli, cauliflower, Brussels sprouts
• Berries: blueberries, strawberries (high antioxidants)
• Citrus: vitamin C, flavonoids
• Tomatoes: lycopene for heart health

Healthy Fats

• Olive Oil: Monounsaturated fats, polyphenols
• Fatty Fish: Omega-3s reduce inflammation (salmon, sardines, mackerel)
• Nuts: Almonds, walnuts - 28% lower mortality with daily consumption
• Avocados: Heart-healthy fats, fiber, potassium

Protein Sources

• Fish: Best protein for longevity
• Legumes: Beans, lentils - fiber + protein
• Moderate Poultry: Better than red meat
• Eggs: Complete protein, moderate consumption
• Plant Proteins: Tofu, tempeh

Foods Linked to Shorter Life

Foods to Minimize

• Red Meat: >100g/day increases mortality 20%
• Processed Meat: 50g/day increases risk 18%
• Sugary Drinks: Each daily serving = +7% mortality
• Refined Carbs: White bread, pasta, pastries
• Excessive Alcohol: >2 drinks/day harmful

Eating Patterns That Work

Time-Restricted Eating

Eating within 8-12 hour window:

• Enhances autophagy (cellular cleanup)
• Improves insulin sensitivity
• Longer lifespan has been seen in some animal studies; this has not been shown in humans
• Example: 8am-6pm or 10am-8pm eating window

Caloric Restriction (with adequate nutrition)

• Moderate CR: 10-20% below needs shows benefits
• Longevity Genes: Activates SIRT1, AMPK pathways
• Human Studies: Improves all biomarkers
• Caution: Must maintain adequate nutrition

Practical Guidelines

Key Principles

• Eat mostly plants (70-80% of calories)
• Choose whole over processed
• Healthy fats over saturated fats
• Moderate portions, stop at 80% full
• Variety of colors on plate
• Cook at home mostly
• Mindful eating, no distractions

Supplements Worth Considering

• Vitamin D: If deficient (most people are)
• Omega-3 (EPA/DHA): If not eating fish 2-3x/week
• Magnesium: Common deficiency
• B12: Especially for vegetarians, older adults

Note: Food first, supplements as backup. Consult healthcare provider.

Getting Started

1. Add 1-2 more vegetable servings daily
2. Replace refined grains with whole grains
3. Swap butter/margarine for olive oil
4. Add 1 serving fish per week
5. Reduce processed food by 50%
6. Gradually build toward Mediterranean pattern