Key Points

  • Milk provides calcium and high-quality protein but has been linked in some studies to risks such as prostate cancer, acne, and lactose intolerance.
  • Common alternatives for calcium and protein include small fish (whitebait, dried sardines), tofu, natto, leafy greens, and calcium-fortified plant milks.
  • Soy milk is a good substitute, though be mindful of isoflavones and differences in processing; choose unsweetened, fortified options when possible.
  • Consult a doctor or nutritionist to determine the best choice for your body and age before making dietary changes.

Is the Myth 'Milk is Good for You' Really True? Introduction

Since childhood, we've been taught that milk 'builds strong bones.' Many of us probably made drinking a glass a habit during our growth years. However, in recent years, reports have increased not only about the benefits of milk but also its risks. In this article, we will clearly explain practical alternatives and precautions, based on the latest knowledge. Honestly, as we organized the information, there were several points that we found 'surprisingly unexpected.'

The Lesser-Known Health Risks of Milk

While milk contains calcium and high-quality protein, several epidemiological studies suggest potential health risks. For example, a 25-year follow-up study in Iceland reported an increased risk of prostate cancer in men who drank milk once or more daily during adolescence. The long-term Physicians' Health Study in the U.S. also pointed to a link between low-fat/skim milk consumption and prostate cancer risk. Conversely, reports on breast cancer are conflicting, and conclusions are not yet definitive. Many studies are observational, requiring caution in asserting causality.

Symptoms Milk Can Cause: Lactose Intolerance and Acne

Lactose Intolerance

The enzyme lactase, which breaks down lactose, decreases in many adults. Globally, about 65% are considered lactose intolerant, with a higher prevalence among Asians. Typical symptoms include bloating, diarrhea, and abdominal pain, with some people also reporting headaches and fatigue. We often hear from people around us whose digestive symptoms improved after reducing dairy products.

Relationship with Acne

Studies also show a link between milk intake and acne, suggesting that fluctuations in insulin and IGF-1 (insulin-like growth factor) caused by milk may promote sebum secretion and keratinization, potentially worsening acne. Indeed, there are many anecdotal accounts of people whose skin condition improved after reducing milk consumption.

How to Supplement Milk's Nutrients? Practical Alternatives

To avoid nutrient deficiencies when giving up milk, we introduce specific foods and strategies.

Foods Rich in Calcium

Small fish (whitebait, dried sardines), tofu (rich in calcium from coagulants), natto, green leafy vegetables (komatsuna, bok choy), dried shrimp, and seaweed. Additionally, calcium-fortified plant-based milks (soy milk, almond milk, etc.) are convenient.

How to Supplement Vitamin D and Protein

Vitamin D can be supplemented through sun exposure, fish (salmon, mackerel), and mushrooms. Protein can be sufficiently obtained from soy products, fish, meat, eggs, and nuts. For bone health, not only calcium but also vitamin D and sufficient protein are important. When we actually reviewed our diet, we found that we could secure these nutrients even with reduced milk intake, which was surprising.

Are Soy Milk and Plant-Based Milks 'All-Purpose'? Precautions and Our Experience

Soy milk is a strong alternative for calcium and protein, but some express concerns about isoflavones (plant estrogens). While the risk of health harm is low with typical intake, consult a doctor if you have hormone-sensitive conditions. Also, choosing unsweetened, calcium-fortified plant-based milks improves nutritional balance. When we switched to soy milk and fortified almond milk, our digestive symptoms eased, and our skin condition improved slightly.