Does Sugar Intake Cause Hair Loss? The Hidden Link Between Sweet Drinks and Thinning Hair

Do you enjoy sweet drinks or milk tea in your daily life?

People often say, “Only by enduring hardship can one become exceptional,” but who truly wants to suffer all the time?

After dealing with life’s challenges, we naturally crave something sweet to comfort ourselves.

Whether at work, during breaks, or while going out, many people treat themselves to a sugary drink—or even so-called “zero-sugar” beverages.

That sweet and fragrant taste brings instant satisfaction and a sense of happiness.

It’s no wonder that some people even call cola their “happy drink.”

However, although these sweet drinks taste great, moderation is important. Excess sugar intake can have serious effects on health.

In January 2023, a study published in the international nutrition journal Nutrients by a research team from Tsinghua University found that higher consumption of sugar-sweetened beverages is associated with a higher risk of male pattern hair loss in young people.

According to the study, if a person consumes more than 3.5 liters of sugary drinks per week, their risk of hair loss increases by 1.78 times.

Further research by the team from the Vanke School of Public Health at Tsinghua University, led by Zhao Ai, identified two key mechanisms:

1. Blood sugar imbalance and inflammation
Sugar in sweet drinks can raise blood glucose levels. When blood sugar becomes abnormal, the skin is more likely to develop inflammation, which may trigger hair loss.

2. Emotional and psychological effects
Sugary beverages may also influence mood changes. After analyzing anxiety levels and medical history, researchers found that chronic illnesses and emotional stress may contribute to male pattern hair loss.

Male pattern hair loss, also known as androgenetic alopecia or seborrheic alopecia, is the most common type of hair loss.

This means that every sugary drink you consume may slightly increase your risk of hair loss.

Some people who experience premature baldness may, in fact, have high intake of sugary foods and beverages as a contributing factor.

According to population studies, the prevalence of androgenetic alopecia has increased from 21.3% in 2010 to 27.5% in 2021. Today, about one in five men suffers from this condition.

The average onset age of hair loss is now around 30 years old—nearly 20 years earlier than in previous generations.

After learning this, that sweet milk tea in your hand may suddenly feel less appealing.

In recent years, “sugar-free” and “low-sugar” lifestyles have become increasingly popular.

On platforms like Douban, groups such as “No Added Sugar Food Research Group” and “I Didn’t Drink Sugary Drinks Today” have attracted over 100,000 participants joining the “sugar reduction” movement.

However, completely eliminating sugar from your diet is not necessarily healthy either. Most foods contain some level of sugar, and cutting it out entirely may lead to low blood sugar and other health issues.

So how much sugar is considered healthy?

According to guidelines from the World Health Organization (WHO), both children and adults should limit free sugar intake to less than 10% of total daily energy intake. This equals about 50 grams per day, with an ideal target of under 25 grams—consistent with national dietary recommendations.

This means that moderate sugar intake is acceptable when the body needs it. This approach is known as “controlled sugar intake.”

But why does sugar control benefit hair health?

1. Preventing Protein Glycation

Excess sugar binds with proteins to form advanced glycation end products (AGEs), which accelerate aging of blood vessels and bones and contribute to diseases such as diabetes and arteriosclerosis.

Since hair is primarily made of protein, glycation reduces available protein resources, slowing hair growth and increasing hair shedding.

Therefore, controlling sugar intake is beneficial not only for overall health but also for preventing hair loss.

2. Improving Blood Circulation

Keeping blood sugar within a healthy range helps reduce the production of glycated hemoglobin, leading to healthier blood circulation.

This ensures that nutrients and oxygen are efficiently delivered to the scalp, supporting healthy hair growth and maintenance.

In conclusion, while sweet drinks may bring temporary happiness, they can also become a hidden burden.

Moderate sugar control is not only good for your body but may also indirectly support healthier hair growth.