ドイツのクナイプというバスソルトは、国を挙げて勧めているもので、調べれば調べるほど高濃度のマグネシウムを溶かしたお湯に浸かると身体にいいことが分かった。
経皮吸入されて、動脈を拡張させるので、直接的に言うなら、勃起入浴剤だし、動脈を押し広げるので、血圧降下に役立ち、男性によく見られる暴飲暴食による過剰な糖質の摂取により引き起こされるアドレナリンの増加に起因する血流の増加による血管へのストレスの緩和から、長い目で見ても即効性で見ても抗ED入浴剤でもあると言えます。
ドイツのFKKなど公衆サウナ浴場などの性風俗が盛んなのも、国を挙げて、勃起しやすくするバスソルトを国民の健康の為に入浴時に入れることを勧めているからであります。
ドイツでバスソルトの使用が盛んなのも、バスソルトの産みの親であり、第一次産業革命の起きたイギリスから、科学、工業、医学、経済あらゆることをいち早く取り入れ、研究して、エビデンス(科学的根拠)のあることであればと、より磨きをかけてきたからでしょう。
エプソムソルトとは「硫酸マグネシウム」の別称で、15～16世紀にイングランドのエプソムという町で発見されたため、そのように呼ばれています。欧米では古くからバスソルトとして広く普及しており、硫酸マグネシウムの持つ温熱効果により体を芯から温め、うちみなどの痛みを和らげる効果が期待されています。また、マグネシウム塩が皮膚表面のタンパク質と結合することにより膜を形成、この膜が熱の放出を防ぎ入浴後の保温効果があると言われています。
クナイプのバスソルト
地下460mからくみ上げた古代海水は現代的な化学汚染の影響を受けておらず、ミネラル豊富です。
一般的な岩塩はナトリウム濃度が高くマグネシウムが少ないのですが、古代海水からなる天然岩塩は海水塩のようにマグネシウムが多く含まれます。
また地中のミネラル分が溶け込むため鉄分も多く、カルシウムもたっぷり含まれているのが特徴です。
名湯中の名湯
レアなマグネシウム入浴剤
一般的な温泉や入浴剤の主成分は硫酸ナトリウムや硫酸カルシウムで、硫酸マグネシウムが主成分の温泉や入浴剤は稀です。硫酸マグネシウムが主成分の硫酸温泉は特に「正苦味泉（せいくみせん）」と呼ばれ、日本では北海道の旭岳温泉が貴重な正苦味泉であり名湯中の名湯と言われています。
エプソムソルト浴でミネラル吸収
硫酸マグネシウム（エプソムソルト）入浴によりマグネシウムが吸収されることを検証したバーミンガム大教授の有名な論文があります。
英語の論文からいきます。
Report on Absorption of magnesium sulfate (Epsom salts) across the skin
Dr RH Waring
School of Biosciences, University of Birmingham. B15 2TT, U.K. r.h.waring@bham.ac.ukProtocol
Clinician in charge – Dr Sarah Nuttall, Department of Clinical Pharmacology, Medical School, University of Birmingham
Scientist in charge – Dr Rosemary Waring, School of Biosciences, University of Birmingham
Technician in charge – Mrs Liba Klovrza, School of Biosciences, University of Birmingham
Recruitment
Subjects were recruited from the staff of the School of Biosciences, University of Birmingham. In all, 19 subjects (10M, 9F) were recruited for the various aspects of the study. All were in good health, and not on any current medication. No subject smoked more than 5 cigarettes/day or drank more than 2 units of alcohol/day. The ages ranged from 24-64 years.
Analyses
Magnesium levels in blood and urine were measured by a flame photometric method using magnesium nitrate as a reference standard. Sulfate was measured by anion-specific high pressure liquid chromatography (hplc), calibrated with a turbidimetric method and with sodium sulfate standards.
Results
After initial pilot studies, all volunteers took baths (temperatures 50-55°C) and stayed in the bath for 12 minutes. They added varying amounts of magnesium sulfate (Epsom salts) to the bath before entry and ensured that the salts were completely in solution.
Blood/Urine Samples
Blood samples were taken before the first bath, at 2h after the first bath and at 2h after the 7th consecutive bath. Baths were taken daily at the same time for 7 days for the experiment. Urine samples were collected before the first bath and then 2h after the first bath and at all subsequent baths . Urine samples were also taken 24h after the last bath. All urine samples were corrected for creatinine content.
Results
Magnesium
Magnesium levels in blood are very tightly controlled. Of 19 subjects, all except 3 showed a rise in magnesium concentrations in plasma, though this was small in some cases. The values before the first bath were, mean 104.68 ± 20.76 ppm/ml; after the first bath the mean was 114.08 ± 25.83 ppm/ml. Continuation of bathing for 7 days in all except 2 individuals gave a rise to a mean of 140.98 ± 17.00ppm/ml. Prolonged soaking in Epsom salts therefore increases blood magnesium concentrations. Measurement of magnesium levels in urine showed a rise from the control level, mean 94.81 ± 44.26 ppm/ml to 198.93 ± 97.52 ppm/ml after the first bath. Those individuals where the blood magnesium levels were not increased had correspondingly large increases in urinary magnesium showing that the magnesium ions had crossed the skin barrier and had been excreted via the kidney, presumably because the blood levels were already optimal. Generally, urinary magnesium levels 24h after the first bath fell from the initial values found after day 1 (mean 118. 43 ± 51.95) suggesting some retention of magnesium in tissues after bathing as blood levels were still high.Measurement of magnesium levels in urine 24h after the 7th bath gave values almost back to control levels.
Sulfate
Free inorganic sulfate levels in plasma rose in all subjects after bathing in Epsom salts (mean pre-bath, 3.28 nmol/mg protein ± 1.40, 2h after 1st bath, mean 5.59 nmol/mg protein ± 3.08). In some individuals, the level post-bath reached > 9 nmol/mg protein. The plasma levels after 7 days showed a mean of 3.57 nmol/mg protein ± 1.70, lower than the peak value, suggesting that sulfate stores in the body were being filled. Analysis of the urine samples again showed an increase in sulfate concentrations (pre-bath mean 623.74 ± 352.34 nmols/ml, 2h post bath 1093.30 ± 388.79 nmoles/ml, 24h after 1st bath 899.83 ± 483.16 nmols/ml. Sulfate excretion in urine in some individuals was only slightly higher after 7 days bathing than the pre-bath levels.
Other Factors
Gender Differences
Males had slightly higher levels of blood magnesium than females (109.0 ± 14.4 ppm/ml v. 87.7 ± 6.3 ppm/ml. Females had higher free plasma sulfate than males (3.26 ± 0.86 nmol/mg. v. 2.54 ± 0.53 nmol/ug) although these differences were not significant. The mean levels of both magnesium and sulfate were almost identical for males and females after bathing.
Optimum Epsom Salt Levels
There was a wide individual variation in this parameter. However, all individuals had significant rises in plasma magnesium and sulfate at a level of 1% Epsom salts .This equates to 1g MgS04/100ml water; 600g Epsom salts/60 litres, the standard size UK bath taken in this project (~15 US gallons). However, most volunteers had significantly raised Mg/S04 levels on baths with 400g MgS04 added. Above the 600g/bath level, volunteers complained that the water felt ‘soapy’. Although this project did not specifically set out to answer the question of how frequently baths should be taken, the results are consistent with saturation of the skin (and possibly the gut ) transporters .These proteins are not well understood or described but, at least for sulfate, they are believed to be high affinity but low capacity.The values obtained suggest that most people would find maximal benefit by bathing 2 or 3 times/ week, using 500-600g Epsom salts each time.
Other factors
No volunteer complained of any adverse effects, even at MgSO4 levels of 2.5%. Possible effects on the kidneys were tested by measuring urinary protein content. This did not change significantly, whichever Epsom salt levels were used, over the 8-day period. Kidney damage is therefore not an issue. In other experiments using excised human skin, we found that sulfate does penetrate across the skin barrier. This is quite rapid so probably involves a sulfate transporter protein. We did not see any Mg penetration, but these experiments were conducted for a short time at only 37 degrees as opposed to the 50 degree bath temperature.To check this, 2 volunteers wore ‘patches’ where solid MgSO4 was applied directly to the skin and sealed with a waterproof plaster. Plasma/urine analysis confirmed that both Mg and sulfate levels had increased so this is potentially a valuable way of ensuring Epsom salts dosage if bathing is not available. Interestingly, both volunteers, who were > 60 years old, commented without prompting that ‘rheumatic’ pains had disappeared.
Conclusion
Bathing in Epsom salts is a safe and easy way to increase sulfate and magnesium levels in the body.
This page was first uploaded to The Magnesium Web Site on January 10, 2004
バーミンガム大学バイオサイエンススクールRH Waring博士の硫酸マグネシウムの経皮吸収に関する論文
被験者 19名（男性１０女性９）
年齢 ２４〜６４歳
浴槽内の硫酸マグネシウム濃度 600g/60リットルを基本
お湯の温度 50〜55℃(←熱すぎへんか？)
入浴時間 12分間
期間 ７日間
採血 初日、２日目と最終７日目の入浴後２時間後採尿 最終７日目の入浴後２４時間以内による硫酸マグネシウム入浴による血中マグネシウム濃度のテストを行なった
【実験結果】
19人中16人で変化が確認出来た
血中マグネシウム濃度
１日目 104.68±20.76 ppm/ml
２日目 114.08±25.83ppm/ml
７日目 140.98±17.00ppm/ml
尿中マグネシウム濃度
実験前 94.81±44.26ppm/ml
７日目 198.93±97.52ppm/ml
男女間の差 実験前の血中値に差がみられたが、実験後の差は認められなかった（男女間の差は無かった）
【考察】
浴槽内のマグネシウムは皮膚から吸収され腎臓を通り尿として排出されていることが確認出来た。
おそらく血中のマグネシウム濃度が充分であたため、吸収されたマグネシウムのほどんどが尿とともに排出されたと思われる。
皮膚から吸収された分のほとんどは２４時間以内に排出されたと推察できる。
被験者によっては最大で400g追加して入浴したものもいたが、今回の実験では被験者から副作用の症状は確認されなかった。
尿タンパク測定結果からも異常はなく、腎臓へのダメージも認めらなかった。
充分にわかってはいないが、500〜600g／１５ガロン（60ℓ）程度で週に２〜３回入浴するのが最も効果的でないかと考える。
その他の意見として６０歳の被験者から「リウマチ性の痛みが消えた」との意見もあった。
【結論】
硫酸マグネシウムの風呂に浸かることが、体内のマグネシウム濃度を上昇させる簡単な方法であることが確認出来た。
最近のコメント