計算方法
表示される数字の式、前提、出典です。
運営 WaterDailyGoal Team最終更新 編集上の更新です。医学的な査読ではありません。
式の流れ
- WaterDailyGoalは飲み物の計画用に33 ml/kgを使います。30〜40 ml/kgのシナリオと活動・気候の係数は当サイトの仮定であり、検証された個人の必要量やNAM・EFSAの計算式ではありません。
- kg × 0.033 L; +0 / +0.3 / +0.6 / +1.0 L; ×0.95 / ×1.0 / ×1.10.
- 妊娠、授乳、GLP-1薬の使用によって、この推定値は自動的には増えません。総水分量の集団参照値には食事も含まれ、飲む量の最低基準ではありません。個別の医療上の指示に従ってください。
結果は1日に飲む目標量です。食事からも水分は入りますが、表示は飲み物として意識する量に絞っています。
| 体重 | 基本量 | 目標の目安 | オンス |
|---|---|---|---|
| 60 kg (132 lb) | 2 L | 2.3 L | 78 oz |
| 70 kg (154 lb) | 2.3 L | 2.6 L | 88 oz |
| 80 kg (176 lb) | 2.6 L | 2.9 L | 98 oz |
| 90 kg (198 lb) | 3 L | 3.3 L | 112 oz |
出典
- 1.U.S. National Academies (IOM/NAM), 2005 — Adequate total water intake of about 3.7 L/day for men and 2.7 L/day for women, including water from food and all beverages.Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate, Summary: water adequate intakes; drinks and food
- 2.European Food Safety Authority (EFSA), 2010 — Adequate total water intake of 2.5 L/day for men and 2.0 L/day for women under temperate conditions.Scientific Opinion on Dietary Reference Values for water, EFSA Journal 8(3):1459, abstract and conclusions
- 3.World Health Organization (WHO) — Notes that daily water requirements are individual and rise with temperature, physical activity, and illness; general adult needs are commonly put on the order of 2–3 L of total water per day.
- 4.UK NHS (Eatwell Guide) — Suggests about 6–8 glasses (roughly 1.5–2 L) of fluid a day — water, lower-fat milk, tea and coffee all count toward the total.
- 5.Mayo Clinic — General guidance of roughly 2.7–3.7 L of total fluids a day, with thirst and pale-yellow urine as everyday checks.
- 6.U.S. Geological Survey (USGS) — The human body is about 60% water by weight.
- 7.Killer, Blannin & Jeukendrup, PLOS ONE 2014 — A three-day crossover trial in 50 habitual male coffee drinkers compared four 200 ml coffee servings with water and found no significant differences in hydration markers; not a general caffeine safety threshold.
- 8.Maughan et al., Beverage Hydration Index, AJCN 2016 — A controlled short-term study in 72 healthy, hydrated men compared urine output after 1 L of different drinks. Milk and ORS showed greater short-term retention; BHI is not a conversion to effective beverage volume or proof of long-term benefit.AJCN 103(3):717–723; abstract, methods and results (2-hour BHI and 4-hour cumulative urine)