In recent times, soy & soy products have gained popularity among fitness freaks who consciously make an effort to consume healthy food. Soy has made such a mark that there are assorted soy dishes and drinks such as smoothies,bars, salads and curries etc.Tofu, commonly regarded as soy paneer in India, is a common soy product that people enjoy eating since it's healthier and vegan. 
However, soy has gained a bad reputation among men as many think soy products can drastically reduce testosterone levels, make their appearance feminine, lead to poor libido, and hinder muscle growth. But these beliefs are not supported by the latest scientific evidence.
But before we come upon any critical conclusion or review, let’s look at soy’s nutritional profile and health benefits : Soybean derived products are the only plant protein sources that contain all the essential amino acids.They are rich sources of fibre, vitamins, minerals and polyphenols, which is a type of antioxidant that prevents cell damage and protects cardiovascular health. A meta-analysis of 46 trials identified by the FDA found 25g per day soy protein reduced the ‘bad’ or LDL cholesterol by three to four per cent in adults. Fermented soy products miso and nato were found to reduce mortality risk by 10 per cent in people who consumed those abundantly than people who did not.
Soybeans are rich in a special class of polyphenol known as isoflavones or phytoestrogens as they are found to mimic the female hormone estrogen. Some experts suggest avoiding soy for men’s sexual health due to the presence of phytoestrogen, believing isoflavone may reduce the level of testosterone. However, research suggests that soy isoflavones and estrogen have different mechanisms of action and scanty evidence is available to connect disrupted male fertility with isoflavone intake. 
 Evidence suggests excess, frequent consumption of soy products lead to some side effects in men. These studies used varieties of soy-soymilk, soy grits, tofu, isolated soy protein, and isoflavone supplements. These studies stick to no more than 56 g of soy protein per day. The best way to know your individualised consumption is to work with a qualified dietitian.
 Source: https://www.google.com/amp/s/indianexpress.com/article/lifestyle/health/soy-bean-men-sexual-health-research-7533664/lite/