Curd is widely regarded as a healthy food, known for its probiotic properties that support digestion and gut health. Rich in beneficial bacteria like Lactobacillus and Bifidobacterium, it improves intestinal flora and strengthens the digestive system. However, while moderate consumption can aid digestion, overconsumption may disrupt the delicate microbial balance in the body.

A 2018 study by Cedars-Sinai Medical Center in the US revealed that an overdose of probiotics—such as those found in curd—can actually disturb the natural bacterial environment of the gut. Consuming large amounts of curd daily may allow good bacteria to overgrow, potentially suppressing other essential microbes. This imbalance can lead to digestive discomfort, including gas, bloating, diarrhea, or constipation.

Moreover, curd may not be suitable for everyone. People with weak immunity or existing intestinal issues are more vulnerable to adverse effects. For such individuals, regular consumption could increase the risk of fungal infections, yeast infections, or heartburn. Since each body reacts differently, it’s essential to observe how your system responds to curd and adjust intake accordingly.

Ayurveda also advises caution, especially regarding when curd is consumed. Eating curd at night is discouraged due to its cold nature, which may increase kapha dosha and lead to issues like cold, sore throat, and indigestion. This is especially relevant during winter or for people prone to sinus problems.

In some cases, excessive intake of lactic acid bacteria may even cause inflammation or allergic reactions. Instances of skin allergies, mouth ulcers, or urinary infections have been reported among those consuming large amounts of curd regularly.

To stay on the safer side, health experts suggest limiting daily curd intake to half a bowl and preferring it during lunchtime instead of dinner. Homemade fresh curd is a better choice than packaged varieties, which often contain preservatives and added sugar. It’s also preferable to consume curd in lighter forms like buttermilk, raita, or lassi, which are easier on digestion.

Ultimately, while curd can be a nutritious addition to your diet, moderation is key. Especially for children, elderly individuals, and those with digestive disorders, it is best to consume curd after medical consultation. No food, however beneficial, should be consumed excessively—understanding your body’s needs and limits is the true path to healthy eating.