You can participate if you are:

• Healthy woman aged 45-70
• Be classified as postmenopausal (defined as no menses in the last 12 months, or had hysterectomy or endometrial ablation without bilateral oophorectomy before age 55) for less than 10 years
• Willing to ingest a black currant supplement or placebo daily for 12 months
• No cardiovascular disease, diabetes, cancer, liver or kidney disease
• Not on hormone replacement therapy for at least one year
• Not heavy smokers (>20 cigarettes/day) or heavy drinkers (>2 drinks/day)
• Not taking prescription medications altering bone and/or calcium metabolism
• Willing to avoid other dietary supplements and foods extremely rich in anthocyanins and fermented dairy products for the duration of the study
• Willing to have a total of 5 blood draws, 4 urine and stool collections, and 3 bone scans, distributed between the baseline, month 3, month 6, and month 12 visits

You cannot participate if:

• You have taken prescription medication (other than for diabetes, hypertension, or hyperlipidemia) for more than one month
• You have had surgery within the past three months
• You are pregnant or breastfeeding