Nutritional supplements
Learning Center
Marijuana and depression: What's the link?
Marijuana and depression seem to go hand in hand for some people, but there's no clear evidence that marijuana directly causes depression.
Probiotics and prebiotics: What you should know
Probiotics are foods or supplements that contain 'good' bacteria that might help treat or prevent illness. Should they be part of your diet?
Vitamin B-12 and depression: Are they related?
Low levels of vitamin B-12 and other B vitamins may be linked to depression, but more research is needed.
Stool color: When to worry
Stool color is usually a result of diet and is only rarely a concern.
Undigested food in stool: What does it mean?
Undigested food in stool generally isn't a problem unless it's accompanied by other symptoms.
Vitamin D toxicity: What if you get too much?
Understand the risks of too much vitamin D, including a toxic reaction.
Blood pressure: Does it have a daily pattern?
Like many body functions, blood pressure has a daily pattern. Find out more.
Omega-6 fatty acids: Can they cause heart disease?
This essential fatty acid is found in certain foods and is recommended as part of a healthy diet.
Pulse pressure: An indicator of heart health?
Pulse pressure may be a strong predictor of heart problems, especially for older adults.
Calcium supplements: When should they be taken?
Timing matters when taking these supplements. Learn how to take them.
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