Best onsen for Hypertension in Hokkaido

1 picks ranked from onsen analysis-sheet data (official, verified and free-flowing sources prioritised)

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Kyowa Onsen Carbon Dioxide Spring
Carbon Dioxide SpringInfo pending
Kyowa Onsen
協和温泉
Hokkaido Aibetsu, Kamikawa District· 協和温泉（長寿湯、協和湯 混合泉）
Sparkling Cold Mineral Spring in Mushroom Country

Kyowa Onsen opened in 1969 in Aibetsu, a town known for mushrooms. Its two sources, Chojuyu and Kyowayu, rise from the same spot and carry more than 1,800 mg/kg of free carbon dioxide, a rarity in Hokkaido. Because boiling would drive off the gas and alter the minerals, the inn pours the source straight from the tap into a small tub and adds hot water to reach bathing temperature, letting it flow without recirculation. The iron-tinged, yellowish water leaves fine bubbles on the skin for a smooth feel.

Onsen Ryokan
StimulationBactericidalSkin BeautyHeat RetentionRelaxation
pHAcidic5.8
0714
TEMP9.5℃
0℃50℃100℃
KEY MINERALS
Free carbon dioxide
1819 mg/kg

Bubbles cling to the skin and dilate blood vessels — the "heart spring." Warms the body even at lukewarm temperatures.

Metasilicic acid
121 mg/kg

A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.

Bicarbonate ion
434 mg/kg

Softens dead skin cells for a silky bathing feel.

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Why onsen are considered good for Hypertension

The benefits of an onsen vary by spring type. Certain spring types are traditionally considered good for Hypertension, and the corresponding indications are listed in the legally required onsen analysis sheets. my Onsen Techo ranks the onsen best suited to your symptom and area based on analysis-sheet data, which is mandated for display under Article 18 of Japan's Hot Spring Act. Each onsen page shows mineral visualisations, bathing tips and booking options.