Vegan diet warning: Beware THIS unexpected side-effect of SUDDENLY ditching meat and dairy

Vegan diets have grown in popularity in recent years, and involves removing everything from dairy and meat, to honey and eggs from your meals.

The rise has been attributed to environmental and health concerns, as well a host of celebrity fans including Natalie Portman and Jared Leto.

There is much evidence a plant-based diet is good for you - it has been linked to weight loss, increased energy, better heart health and lower risk of cancer.

However, cutting out several food groups at once can be detrimental to your health.

A sudden change in diet could cause short-term hair loss.

This is because adjusting to a diet without protein-rich meats and fish could affect the hair’s cell renewal and health.

“Protein is one of the most important nutrients for healthy hair,” said Cassandra Barns, a nutritionist.

“Keratin, a substance that provides the strength and structure of hair, is a protein, and our body makes it from the proteins that we eat.”

She suggested that if you want to remove animal protein from your diet to ensure you consume enough plant-based protein.

This could include replacing fish and eggs, with beans, lentils, nuts and seeds.

Another risk with embarking on a vegan diet, is deficiency in vitamin B12 and calcium.

It is due to a lack of dairy products, such as cheese, milk and yoghurt.

Vitamin B12 is important for a healthy immune system, while calcium is needed to help build and support your bone density and keep teeth strong.

Up your intake of these nutrients on a vegan diet by eating tofu, spinach and kale.

Or take a supplement, such as Nature’s Plus Source of Life Garden Vitamin B12.

However, positive side-effects you may experience by following a vegan diet include clear skin, due to lack of dairy, and better quality sleep, thanks to a diet full of nuts, leafy greens and oatmeal.