I think the sign Saturn is in can show potential health problems you might have in the future.

Aries: issues in regards to the head, headaches, migraines, mental stress.
Taurus: the throat, thyroid, vocal chords.
Gemini: the lungs, issues with speech. Communication issues.

Cancer: the breasts, pregnancy, giving birth.
Leo: the heart, blood pressure, anything cardiovascular related.
Virgo: issues in regards to the stomach, digestion, weight.
Libra: kidney issues, issues with the pancreas or other parts of the endocrine system.

Scorpio: issues in regards to genitalia, (be wary of STDS).
Sagittarius: pain in the hips or lower back, may suffer from scoliosis or something similar.
Capricorn: health issues in regards to bones or joints. Arthritis, or anything that impacts the bones.

Aquarius: pain in regards to the legs, in regards to body growth.
Pisces: issues in regards to feet. May have faced slow development as a child.