Figure 4: The suppressive effect of hydrogen-rich water bath on the visceral fat. Note: Immersion in hydrogen warm water bath (41°C) for 10 minutes was performed once a day for 1 month. The subject does not change her meal contents and the exercise except that she used a hydrogen-rich water bath. (A) The female, 41 years old, with her informed consent. (A1–3) Before, 1 month, and 3 months after hydrogen-rich water treatment, respectively. The red circles indicate two transverse wrinkles and four radial wrinkles around the navel. (B) The female, 42 years old, with her informed consent. (B1, 2) Before and a month after hydrogen-rich water treatment, respectively. The yellow triangles indicate waist curves.