How much water should you drink each day? It's a simple question with no easy answer. Studies have recommended drinking different amounts over the years.

Understanding the Context

But how much water a body needs may be different for each person. It depends on many things, including your health, age, how active you are, where ... MSN: How Many Carbs Per Day Can You Eat and Lose Weight? When taken at recommended doses, vitamin B-12 supplements are generally considered safe.

Key Insights

The recommended daily amount of vitamin B-12 for adults is 2.4 mcg and 10 to 12 mcg for older adults. Taking doses of vitamin B-12 might cause: Headache. Nausea. Diarrhea. Weakness.

Final Thoughts

Tingling sensation in hands and feet. Having vitamin B-12 levels that are too high may raise the risk of getting cancer or ... A simple blood test can check the levels of this vitamin in your blood. Taking a vitamin D supplement or a multivitamin with vitamin D may help improve bone health. The recommended daily amount of vitamin D is 400 international units (IU) for children up to age 12 months, 600 IU for people ages 1 to 70 years, and 800 IU for people over 70 years. The recommended daily amount of vitamin A is 900 micrograms (mcg) for men and 700 mcg for women.

Daily vitamin A needs change slightly to 770 mcg for pregnant people and 1,300 micrograms for people who are breastfeeding. These types of activities are often recommended for people with osteoporosis: Strength training exercises, especially those for the upper back. Weight-bearing aerobic activities, like walking. Flexibility exercises.