What is ashwagandha?

Ashwagandha (Withania somnifera), also known as sleeping berry or Indian ginseng, is one of the most important plants in Ayurvedic medicine - a centuries-old Indian healing system. The name “ashwagandha” literally means “smell of the horse,” referring to the traditional belief that the plant provides strength, endurance, and vitality like a horse.

The plant's roots and leaves contain a variety of biologically active substances, especially withanolides, alkaloids, and saponins, which are responsible for its diverse health effects. Ashwagandha is classified as an adaptogen - meaning that it helps the body adapt better to stressful situations and maintain physical and mental balance.

Ashwagandha is used both in traditional medicine and increasingly in modern Western naturopathy and sports nutrition - particularly to reduce stress, promote recovery, and boost energy, focus, and hormonal balance.

How does ashwagandha work in the body?

Ashwagandha acts through several biological mechanisms that affect the nervous system, the endocrine system (hormones), and cellular functions.

1. Stress reduction and cortisol regulation:
One of ashwagandha's best-known effects is its ability to lower the stress hormone cortisol. Chronically elevated cortisol levels are associated with symptoms such as insomnia, weight gain, fatigue, anxiety, and muscle weakness.
Studies show that ashwagandha regulates the activity of the adrenal glands and can thereby reduce cortisol levels by up to 30%. This improves inner calm, stress resilience, and the ability to concentrate.

2. Supporting the nervous system and mental performance:
Ashwagandha has a neuroprotective effect by promoting the formation of nerve cells and reducing oxidative stress in the brain. It enhances concentration and memory and may help reduce mental fatigue.
It also modulates the neurotransmitter balance, particularly GABA (gamma-aminobutyric acid) and serotonin, resulting in a calming, balancing effect – without causing drowsiness.

3. Hormonal balance and testosterone support:
Ashwagandha has a balancing effect on the endocrine system. In men, it may improve testosterone production and sperm quality, while in women it may stabilize the menstrual cycle and balance hormonal fluctuations.
The withanolides it contains act on the hypothalamic-pituitary axis, the central regulatory hub of hormone regulation, and thus contribute to a healthy hormonal balance.

4. Promoting energy, muscle strength, and endurance:
In sports nutrition, Ashwagandha is known for its performance-enhancing effects. Studies show that daily intake leads to an increase in muscle strength and muscle mass, while simultaneously reducing body fat.
Ashwagandha increases ATP production (cellular energy), improves oxygen utilization, and shortens recovery time after intense exertion.

5. Immune system support:
Ashwagandha strengthens the immune response by activating macrophages and natural killer cells. At the same time, it has an anti-inflammatory effect by reducing the production of pro-inflammatory cytokines.

6. Antioxidant cell protection:
The withanolides contained in Ashwagandha protect cells and mitochondria from oxidative stress. This helps to slow down aging processes, maintain cell health, and prevent chronic inflammation.

Benefits of Ashwagandha

  • Reduces stress and cortisol levels naturally

  • Promotes calm, sleep quality, and mental clarity

  • Boosts energy, strength, and endurance

  • Improves testosterone levels, fertility, and libido

  • Supports regeneration and muscle growth

  • Strengthens the immune system and protects cells

  • Promotes emotional stability and concentration

  • Supports hormonal balance in men and women

Use and dosage

The recommended daily dose is 300–600 mg of ashwagandha extract (standardized to 5% withanolides).

  • To reduce stress: 300 mg in the morning or evening

  • For muscle building & performance enhancement: 500–600 mg daily, preferably over several weeks

  • To improve sleep: 300 mg before bedtime

Ashwagandha can be taken in capsule form, as a powder, or as part of adaptogen blends. For optimal results, regular use over 4–8 weeks is recommended.

Safety and tolerability

Ashwagandha is well tolerated at the recommended doses.
Rare side effects of overdose may include:

  • Stomach discomfort

  • Drowsiness or mild sedation

  • Hormonal changes at very high doses

Not recommended during pregnancy and breastfeeding or in cases of thyroid disorders without medical consultation.

Conclusion

Ashwagandha is a broadly effective adaptogen that reduces stress, boosts energy, and brings body and mind into balance. It supports both physical and mental performance, stabilizes hormones, and strengthens the body's ability to recover.

In modern sports and health nutrition, ashwagandha is increasingly valued as a natural alternative to chemical stimulants - for greater strength, focus, calm, and vitality in everyday life and training alike.

Sources

  1. Chandrasekhar K, et al. (2012): A prospective, randomized double-blind study of safety and efficacy of a high-concentration full-spectrum extract of Ashwagandha root. Indian J Psychol Med, 34(3), 255–262.

  2. Wankhede S, et al. (2015): Examining the effect of Withania somnifera supplementation on muscle strength and recovery. J Int Soc Sports Nutr, 12, 43.

  3. Lopresti AL, et al. (2019): The effects of ashwagandha on stress and anxiety: a systematic review and meta-analysis. J Altern Complement Med, 25(12), 1215–1227.

  4. Singh N, et al. (2011): An overview on Ashwagandha: A Rasayana (Rejuvenator) of Ayurveda. Afr J Tradit Complement Altern Med, 8(5 Suppl), 208–213.