Your nails are literally made of keratin, a type of protein. Without enough protein, nails become weak, brittle, and grow slowly.

Eat more:

  • Eggs

  • Chicken and turkey

  • Fish

  • Greek yogurt

  • Beans and lentils

  • Tofu and tempeh

How much: Aim for a source of protein at every meal.

5. Omega-3 Fatty Acids – For Moisture and Flexibility

Omega-3s help keep nails hydrated and flexible, preventing brittleness and breakage.

Eat more:

  • Fatty fish – Salmon, mackerel, sardines

  • Walnuts

  • Flaxseeds (ground)

  • Chia seeds

  • Hemp seeds

6. Vitamin C – For Collagen Production

Vitamin C is essential for collagen production, which forms the structure of your nails. It also helps absorb iron.

Eat more:

  • Citrus fruits – Oranges, grapefruit

  • Bell peppers (red are highest in vitamin C)

  • Strawberries

  • Kiwi

  • Broccoli

  • Brussels sprouts

7. Silica – For Strength and Smoothness

Silica is a trace mineral that strengthens nails and may help reduce ridges.

Eat more:

  • Cucumbers (with skin)

  • Bell peppers

  • Oats

  • Brown rice

  • Bananas

  • Leeks

  • Green beans

8. Vitamin B12 – For Color and Health

B12 deficiency can cause bluish or dark nails and contributes to brittleness.

Eat more:

  • Clams and mussels

  • Liver

  • Fish – Salmon, tuna

  • Eggs

  • Fortified nutritional yeast (for vegans)

A Sample Day for Nail Health

Meal Foods
Breakfast Scrambled eggs with spinach + orange juice
Snack Handful of almonds + an apple
Lunch Salmon salad with mixed greens, bell peppers, cucumber, and pumpkin seeds
Snack Greek yogurt with strawberries
Dinner Lean beef stir-fry with broccoli, bell peppers, and brown rice
Before bed Chamomile tea (hydrates, supports sleep)

Lifestyle Tips for Stronger Nails

  1. Hydrate – Drink plenty of water. Nails need moisture from the inside out.

  2. Moisturize – Use cuticle oil or hand cream daily.

  3. Wear gloves – When washing dishes or using harsh chemicals.

  4. Don’t bite or pick – Obvious, but worth saying.

  5. Give them a break – From polish and harsh removers.

  6. File, don’t cut – File in one direction to prevent splitting.

Supplements That May Help

If you can’t get enough from food alone:

Supplement Typical Dose Notes
Biotin 2.5-5 mg daily Well-studied for nail health
Iron As prescribed Only if deficient; excess iron is harmful
Zinc 15-30 mg daily With food to prevent stomach upset
Collagen peptides 10-20 g daily May improve nail strength