Dr. Susan's Story

Dr. Susan Thys-Jacobs is a practicing endocrinologist who, in the early 1980s, noticed the similarities between PMS symptoms and the symptoms exhibited by people with dramatic calcium deficiency.

She was lucky. New methods for testing vitamin and mineral levels in the blood had just been introduced which allowed her to test her theory – that PMS was simply a deficiency of calcium in the body.

Her early investigations were positive and she patented the treatment of PMS with calcium. Her discovery generated immediate interest from large pharmaceutical companies.

In partnership with one of those companies, Dr. Susan conducted the largest ever study of the effect of calcium on PMS. It demonstrated conclusively that calcium can indeed relieve PMS.

The study showed that if women don’t take enough calcium, the hormones that regulate its intake react badly with estrogen and progesterone in the body and cause PMS symptoms. (The female body produces more estrogen and progesterone during the menstrual cycle).

Replacing the calcium alone reduces PMS symptoms by 50%. Replenishing the body’s vitamin D at the same time (which helps the body absorb calcium) reduces symptoms by 90-100%.

Since her discovery, Dr. Susan has published many medical papers on the relief of PMS and has helped hundreds of women with Premcal, consistently seeing life-changing results.

Now she’s on a mission: to get rid of the unnecessary suffering caused by PMS.