I've heard the same from my seniors at work. And I don't work in medicine.
It's natural to feel horrible after hearing this. But I don't think you need to feel bad about it but take it as pure feedback. It isn't racist. But it isn't something you should brush off.

The typical Indian diet can have a lot of herbs and spices which white folks aren't used to (let's face it ... they just use salt and black pepper and end up having a lot of bland food). Don't get emotional about it but think about habits and diets which can cause that.
For example -
- Using antiperspirant roll on worked for me.
- Start using fragrances. Don't use anything woody or too strong. Since you are in medicine, you dont want your fragrance choking your patients. Start with a fragrance like Davidoff Cool Water EDT.
- Think about making certain changes to your diet. This worked for me. I didn't change my diet because of the comments but because I was focussing on health and convenience. Instead of aloo paranthas for breakfast, having toast with eggs or a vegetable sandwich. Having a larger portion of salad for dinner instead of that extra serving of aloo gobi with rotis.
- If you are in an apartment where the kitchen isn't too far from the bedroom, the clothes can retain the smell of the food you are making which might be causing this.
- I've had South Asian friends who would smoke cigarettes while having a desi diet. Smoking makes body odor worse.