Vitamins: Essential Molecules for Life

16 July 2025

Vitamins are vital for health. There are 13 essential vitamins, and each supports key body functions — from building cells and strong bones to supporting the immune system and keeping skin, hair, and nails healthy.

Why we need vitamins

We can’t make most vitamins on our own. We get them mainly from food. A few exceptions include:

  • Vitamin D, which is made in our skin from sunlight.

  • Vitamin K, biotin, and some B12, which gut bacteria can produce in small amounts.

Vitamins help with:

  • Metabolism and energy production

  • Blood formation

  • Bone and tooth strength

  • Hormonal balance and nervous system support

Are we getting enough vitamins from food?

Many people worry about vitamin deficiency, especially since modern fruits and vegetables might have lower nutrient content. While studies show mixed results, storage and transport clearly reduce vitamin levels. The longer food is stored, the more vitamins are lost — sometimes up to 40%.

Additional factors that increase vitamin needs include:

  • Stress, smoking, and alcohol

  • Poor gut health

  • Intense exercise

  • Pregnancy and breastfeeding

  • Strict diets or heavy reliance on processed foods

Some common deficiencies include vitamin D, folic acid, iron, calcium, and iodine.

Should you take supplements?

While supplements seem like an easy fix, they often have low bioavailability and can’t replace the complex mix of nutrients in natural foods. Vitamins from fruits, vegetables, fish, meat, eggs, and whole grains work together with other substances your body needs.

Eat real food for real vitamins

A healthy diet is usually enough to prevent vitamin deficiency. Focus on:

  • Fresh fruits and vegetables daily

  • Fish 1–2 times per week

  • Cold-pressed vegetable oils

  • Nuts, legumes, and whole grains

  • Minimizing processed, sugary, and fatty foods

The Metabolic Balance nutrition plan helps ensure you get the right nutrients naturally, supporting your health without relying on pills.

    Takeaway

    If you eat a balanced, varied diet rich in whole, fresh foods, you typically don’t need supplements. Your body will get all the vitamins it needs to stay strong, energized, and healthy.

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