PCOS or PCOD: what is the difference?
The two words are used interchangeably across India. They are not quite the same thing, and knowing which you have changes less than you might expect.
What doctors mean when they say PCOS
PCOS is diagnosed using the Rotterdam criteria, which require at least two of these three:
- Irregular or absent ovulation — cycles longer than 35 days, fewer than eight periods a year, or none at all.
- Signs of raised male hormones — either visible (persistent acne, facial or body hair, scalp hair thinning) or on a blood test (raised testosterone).
- Polycystic ovaries on ultrasound — many small follicles arranged around the edge of the ovary.
Note what this means: you can have PCOS with completely normal-looking ovaries, and you can have polycystic-looking ovaries without having PCOS. Around one in five women have the ultrasound appearance without the syndrome. The scan alone does not make the diagnosis.
What PCOD usually means in practice
“PCOD” — polycystic ovarian disease — is used mostly in India and parts of South Asia. It does not appear in international guidelines. When an Indian report or doctor uses it, it generally means one of two things:
- The ultrasound showed polycystic-appearing ovaries, without the full hormonal picture; or
- A milder version of the same condition, where cycles are somewhat irregular but the metabolic and androgen features are limited.
Some doctors simply prefer the older term and mean exactly what others call PCOS. This is why two gynaecologists can look at the same reports and label them differently, which is confusing but not negligent.
So does the diet change?
Mostly, no. Both conditions share the same underlying driver in the majority of cases, which is how the body handles insulin. The principles do not change:
- Protein with every meal, including breakfast
- Carbohydrates that release slowly, in controlled portions, never eaten alone
- Half the plate as vegetables
- Regular meal times and an early dinner
- Movement most days, with some strength work
What changes is intensity, not direction. A woman with marked insulin resistance, raised testosterone and absent periods needs a tighter carbohydrate structure and closer monitoring than someone whose only finding is a polycystic scan with near-regular cycles. The second person often needs little more than a better breakfast and consistent meal timing.
What actually decides your plan
Five things matter more than which of the two words is written on your report:
| Factor | Why it changes the plan |
|---|---|
| Insulin resistance | Decides how strictly carbohydrates are structured and whether snacking helps or hurts. See insulin resistance in PCOS. |
| Your weight and waist | Where fat sits matters more than the number. A waist above 80 cm in women signals abdominal fat even at a normal weight. |
| Thyroid status | An underactive thyroid produces the same symptoms and will stall progress until treated. See the thyroid diet plan. |
| Whether you are trying to conceive | Shifts the emphasis from weight loss towards cycle regularity and nutrient status. |
| Deficiencies | Low vitamin D, B12 or iron worsen fatigue and hair fall, and no diet fixes those symptoms while the deficiency remains. |
If your report only says “PCOD”
It is reasonable to ask your doctor two questions:
- Do I meet the criteria for PCOS, or is this only an ultrasound finding? The answer changes how seriously the metabolic side should be taken.
- Should I check fasting insulin, glucose and thyroid? Many women are diagnosed from a scan alone and never have the metabolic side assessed, which is the part that affects long-term health.
Our page on which PCOS blood tests to get lists what is worth asking for and when in your cycle to have it done.
Frequently asked questions
Is PCOD less serious than PCOS?
Often it is used to describe a milder presentation, so in that sense yes. But the term has no fixed definition, so it cannot be relied on as a measure of severity. Your cycles, your androgen symptoms and your metabolic reports tell you far more than the label does.
Can PCOD turn into PCOS?
They are not separate diseases that convert into one another. What does happen is that the picture worsens over time, particularly with weight gain, so someone who once had only an ultrasound finding may later meet the full criteria.
I have cysts on my ovaries. Is that PCOS?
Not necessarily, and the name is misleading. The “cysts” in PCOS are immature follicles, not true cysts, and about one in five women have this appearance without having the syndrome. Diagnosis requires two of the three criteria.
Do I need an ultrasound to be diagnosed?
Not always. If you have irregular cycles and clear signs of raised androgens, that is already two of the three criteria. Guidelines also advise against relying on ultrasound in girls within eight years of their first period, because polycystic-looking ovaries are common and normal at that age.
Can the diet be the same for both?
The principles are the same. How strictly they are applied depends on your insulin, your weight and your symptoms rather than on which of the two terms your report uses.
Will losing weight cure it?
Neither is curable, but both respond well. A 5 to 10 percent reduction in body weight is repeatedly linked with cycles returning and symptoms improving. For many women that is 4 to 7 kg, not 25.
Not sure which you have?
Take the free PCOS self-check, or message Dt. Alka to talk through your reports.
Free PCOS self-checkWhatsApp Dt. AlkaPublished by Nourish with Dt. Alka, the clinical nutrition practice of Dt. Alka Pal, M.Sc. (Foods & Nutrition). General information only; diagnosis and treatment are for your doctor. Related: PCOS diet plan, insulin resistance in PCOS, PCOS blood tests.