Women who have had boob jobs are 4.5 times more likely to have a stillbirth and nearly four times more likely to develop melanoma, a type of skin cancer.
They are also six times more likely to develop the inflammatory condition rheumatoid arthritis.
On top of that, women who have silicone implants are more likely to suffer surgical complications than those who opt for saline implants.
Scarring in the breast tissue around the implant is more likely when the implant is silicone, researchers from University of Texas MD Anderson Cancer Center in Houston said.
The Food and Drugs Administration (FDA), which approves medical supplies in the US, banned the use of silicone implants in the 1990s due to health concerns including cancer, tissue diseases and autoimmune diseases.
But further research found no link between the breast implants and ill-health.
In 2006 the FDA approved silicone gel-filled implants from two manufacturers, asking them to conduct studies into and monitor long-term safety outcomes.
Currently, the most popular implants approved by health regulators are silicone implants and implants filled with saline solution.
Silicone implants use a shell filled with the plastic gel, whereas saline implants use silicone shells filled with saline.
Many women opt for silicone because it feels more like a real breast.
For the new study experts from Texas looked at nearly 100,000 patients enrolled in a breast implant study between 2007 and 2011.
Around 80,000 women had silicone implants and the rest had saline implants.
Some 72 per cent had a boob job to enlarge their breasts, 15 per cent had revision augmentation to make their implants bigger again, 10 per cent had a breast reconstruction and three per cent had surgery to correct a reconstruction.
Experts also found they were at risk of rare autoimmune disorders including; Sjogren's syndrome, an immune system disorder that causes dry eyes and dry mouth; and sclerodermia, chronic hardening and tightening of the skin and connective tissues.
Lead author Dr Mark Clemens, an associate professor in the department of plastic surgery at the university, said: "We are reporting an analysis of the largest prospective study to date on silicone breast implant safety.
"We are sharing critical information on complication rates and rare associations with systemic harms.
"This data gives women important safety information about silicone breast implants to have real expectations and to help them choose what is right for them."
"These findings are associations compared to the general population and determining why these associations are observed or any causation requires further study."
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