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Yoshihiro Daiichi Onsen

Water profile

Yoshihiro Daiichi Onsen

Spring chemistry and what it does, with the research behind it.

Simple

A simple thermal spring rising from the Hotta source in Beppu. Gentle and lightly mineralized, this is the mild, low-irritation water typical of simple springs. The posting lists the usual bathing benefits: relief for nerve, muscle, and joint pain, recovery from fatigue, and general health promotion.

Good for

Recovery

Warmth and buoyancy lower stress markers and improve sleep; habitual bathing is linked to lower rates of depression.

fatigue, stress

On the certificate:convalescencerecovery from fatiguehealth promotion

Take care

Contraindications
  • acute illness (especially when accompanied by fever)
  • active tuberculosis
  • malignant tumors
  • severe heart disease
  • hemorrhagic disorders
  • severe anemia
  • respiratory failure
  • renal failure
  • any other generally progressing illness
  • pregnancy (especially early and late stages)

On the certificate

  • neuralgia
  • muscle pain
  • joint pain
  • frozen shoulder
  • motor paralysis
  • stiffness of joints
  • bruises
  • sprains
  • chronic digestive ailments
  • hemorrhoids
  • sensitivity to cold

Evidence

  1. Maeda M. 温泉の医学的効果とその科学的根拠. J. Hot Spring Science 70:197–207, 2021.
  2. Takeda M et al. Hot spring bathing practices have a positive effect on mental health in Japan. Heliyon 9(9):e19631, 2023.

Educational, not medical advice. If you have a health condition, consult a physician before onsen therapy.