Healthy Living

Paleo Diet Shocking Side Effects You Should Be Aware Of

The paleo diet has been getting more attention over the past years. This approach mainly encourages people to eat like the human ancestors, who loved high protein foods. 

To date, the paleo diet is a high-protein, low-carbohydrate plan mainly used for weight loss. It encourages people to avoid processed foods, including dairy products and those high in sugar.

The main advantage of eating more protein is it helps people feel full faster even after eating small meals. However, paleo also comes with some problems. 

“It’s totally not sustainable,” Lisa Young, author of “The Portion Teller Plan,” said. “Whenever you cut out entire food groups, you’re not going to be able to live with it for a long time.”

The diet limits the consumption of low-fat dairy and important plant-based proteins, including whole grains, beans and legumes. These foods are known for providing a number of health benefits and supporting weight loss.

The people on the paleo diet are at risk of the “low-carb flu.” This condition occurs when the body loses carbs that are important for energy generation, according to Women’s Health

Low-carb flu could stay from days to weeks, causing headaches, fatigue, weakness, hazy thinking and irritability. 

“When you go on a lower-carb diet, very often you can get lightheaded and dizzy because you need carbs for energy,” Young said. “Going too low-carb can eventually send your body into starvation mode.” 

But low-carb flu is just one of the many negative effects of the paleo diet. This article explores other unwanted changes that may occur when you transition to the high-protein weight loss plan. 

Side Effects of Paleo Diet

Low Energy

A sudden decrease in carbs could trigger ketosis in the body. In this state, body fat is used to produce energy. However, ketosis can cause lethargy and lead to faster decline in energy levels. 

Affects Gut Health

The paleo diet forces the gut to adapt to a new set of foods to support bodily functions. But the transition could also trigger changes in bowel habits.  

In most cases, paleo causes bowel discomfort in people. However, some reported improved bowel health and movements. 


To those people who take insulin or other drugs, like sulphonylureas and glinides, for their conditions, moving to the paleo diet may increase the risk of hypoglycemia or very low blood sugar, according to

It is because of lower carb intake. The paleo diet may require changing your dosages to maintain blood sugar levels.

Bad Breath

Bad breath is another common side effect of paleo diet. Experts said it may be because of ketosis or the increased protein intake, which causes sulphur burps with an eggy smell.

Luckily, it could be easy to reduce the bad effects of the high-protein diet. Simple meal changes and adding healthy food choices could help improve health and avoid problems. 

Doctors can help guide you in the transition by identifying potential side effects and the nutritional needs of your body. 

paleo diet The Japanese diet does not encourage red meat consumption. Fish cooked by steaming, boiling and grilling is allowed. Pixabay