Nutritional value of broccoli: vitamin C for immunity, sulforaphane for detoxification, vitamin K for bones. Why broccoli is one of the most beneficial vegetables on an athlete's plate.

Broccoli belongs to the cruciferous vegetable family and is one of the most nutritious plants in the world. It is rich in vitamin C (even more than in oranges), vitamin K, sulforaphane — a powerful anticancer compound, and fiber. 100 g of broccoli has only 34 kcal.
| Nutritional Value (100 g) | Amount |
|---|---|
| Calories (kcal) | 34 kcal |
| Protein | 2.8 g |
| Fat | 0.4 g |
| Carbohydrates | 6.6 g |
| Vitamin C | 89 mg (99% RDA) |
| Vitamin K | 102 µg (85% RDA) |
| Folic acid | 63 µg (16% RDA) |
| Sulforaphane | ~50–100 mg |
| Fiber | 2.6 g |
Sulforaphane found in broccoli is one of the strongest known natural antioxidants. It activates the Nrf2 pathway — the body's 'main antioxidant switch', which protects cells from oxidative stress after intense training.
One serving of broccoli provides ~85% of the daily vitamin K requirement. Vitamin K is essential for bone mineralization and blood clotting. For athletes, this means stronger bones and a lower risk of stress fractures.
89 mg of vitamin C per 100 g of broccoli — that's more than in one orange (53 mg)! Vitamin C contributes to normal immune system function, accelerates tissue healing and helps absorb iron from plant sources.
Broccoli's bioactive compounds (sulforaphane, kaempferol, quercetin) have a strong anti-inflammatory effect. Regular consumption of broccoli reduces systemic inflammation and muscle soreness after training.
To preserve the maximum amount of sulforaphane: eat broccoli raw or lightly steamed (3–4 min, no longer). Boiling in water destroys sulforaphane. Before cooking, chop and let stand for 30–40 min — this activates the myrosinase enzyme and increases sulforaphane content.
💡 Pro tip: Add mustard powder or radishes to cooked broccoli! They contain active myrosinase, which 'revives' sulforaphane production. It is believed that this increases sulforaphane absorption 4 times!
Both ways have advantages. Raw broccoli has more sulforaphane and vitamin C. Cooked (lightly, steamed) — is easier to digest and has more available beta-carotene. Variety is recommended — sometimes raw, sometimes steamed.
Due to the high fiber content and raffinose (a complex sugar), broccoli can cause gas accumulation in sensitive people. Start with smaller portions, cook (do not eat raw) and gradually increase the amount — the body adapts.
1–2 cups (150–300 g) of broccoli per day is the optimal amount. This provides all the antioxidant benefits without digestive discomfort. You can eat it every day — broccoli is one of the safest and most beneficial foods.
Consume 1.6–2.2 g/kg body weight per day for muscle growth and recovery. Distribute protein evenly across 3–5 meals.
The main energy source for intense training. 3–7 g/kg depending on the sport and intensity.
Healthy fats from nuts, fish, avocados — for hormone production and joint health. 0.8–1.2 g/kg per day.
Drink 30–40 ml of water per 1 kg of body weight. During training, additionally 500–1000 ml per hour with electrolytes.
| Supplement | Purpose | Dose | When to take |
|---|---|---|---|
| Whey protein | Muscle Recovery and Growth | 25–30 g | After training, in the morning |
| Creatine Monohydrate | Strength, explosive power | 5 g per day | At any time, consistently |
| Omega-3 | Reducing inflammation, heart health | 1–3 g EPA/DHA | With food |
| Vitamin D3 | Bone health, immunity, testosterone | 2000–4000 IU | With a fatty meal |
| Magnesium | Muscle Relaxation, Sleep | 300–400 mg | Before Sleep |
| BCAA/EAA | Amino acid supplementation | 5–10 g | Before/during/after training |