Taking just 1 pill a day can increase breast size?

There is no data that associates the use of fish oil pills and increase in breast size. Breast size is largely a function of genetic predisposition as well as body fat percentage. 
Best wishes
Dr. Jan

As for fish oil tablets and using them to increase the size of your breasts is probably not a proven treatment but most certainly one you can try.   Breast size can increase with weight gain as the tissue of the breast is made up of fat.  If you are considering surgery with breast implants that consult with a Board Certified Plastic Surgeon.  Good luck.

Hi as55655,I understand your concern. However, there is no medications that can increase or enhance breast size. The most reliable way to increase the size of breasts would be through implant placement. If you are considering a surgery, I would suggest you to consult a board-certified plastic surgeon. Only after a thorough examination you will get more information and recommendations.

Daniel Barrett, MD, MHA, MS

Certified, American Board of Plastic Surgery

Member, American Society of Plastic Surgery

Member, American Society of Aesthetic Plastic Surgery

There has been no proven data that fish oil can enlarge breasts. I suggest seeking a board certified plastic surgeon for an in person consultation if you would like to go the surgical route.Best regards,

Thank you for your question. I am not aware of any studies that have linked fish oil to breast enlargement. Breast size can fluctuate with your weight and other factors. Best of luck. 

Unfortunately this is not true.  'magic" pills such as fish oil have never scientifically been shown to increase breast size.  Good luck,Dr.Hyans

Unfortunately, there is no evidence to say that fish oil or any other pills/supplements can safely and effectively increase breast size. Currently, the only way to do so would be to get a surgical procedure like breast augmentation. If you are thinking about breast enhancement, just be sure to work with a reputable board-certified plastic surgeon to ensure your safety and high-quality results.

Thank you for your question, there is no data to prove the above statement and it is likely a myth. 

Thank you for your Query and Unfortunately there is no proven medication nor exercise to increase the size of one's breast and the only option is get a breast implant surgery. 
If you happen to consider getting it done, then kindly contact a board certified Plastic Surgeon for your breast implant surgery.